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Tyler's 04 slicktop 6spd Silvergrey MCS/Brembo/CSL/Karbonius/Nogaros/Supersprint

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    When the last Supersprint groupbuy started up, I contemplated the idea of getting the best cats (HJS) so that I would no longer have to swap headers/sect 1 every 2 years for CA SMOG. I also contemplated just having some cheap cats welded into my straight pipes, but I wanted top quality and HJS cats barely lose any power. The retail price of the HJS is eye watering, but the GB discount was hefty enough, I pulled the trigger.

    Despite the groupbuy taking a while, and issues with QC both in the manufacture and shipping of items, mine arrived in perfect condition, just in time for me to swap them in for my smog test that was due in a few weeks.



    Beauts

    Car up - I had noticed the giubo (OE, replaced in 2014-40k ago) had some new cracks forming, so I bought a new one (FCP warranty) ahead of time since you have to drop sect 1/2 to access D/S.



    SS "S" pipes out



    One of my other goals on this job, was to extend my muffler out a it more, especially (mostly) on the right side, to even the tips out. You can see how uneven it was, below. Yes, my tips are adjustable, but the factory metal piping that my tips attach to, are very short and there's no more room for me to bring the tips out further. (Only an issue with CSL diffuser)



    Next, dropped v-brace and sect 2



    Need to drop heatshield in order to reach CSB. Have to loosen CSB to push D/S back enough to get giubo out. You can access giubo without dropping sect 2 and heatshield, but then you're stuck.



    You can see cracks on the giubo. Made it almost 40k of hard driving.

    Click image for larger version  Name:	silvergHJSgiubo06.JPG Views:	0 Size:	73.3 KB ID:	147807

    Giubo removed. Inspected the shift linkage. I had done it all recently enough, though, so still well lubed and everything looking as it should. (pictured is UUC DSSR & RE tranny bushes)

    Click image for larger version  Name:	silvergHJSgiubo07.JPG Views:	0 Size:	77.6 KB ID:	147806

    40k giubo vs. new. You can buy the cheaper Febi brand, and in the package will be a factory SGF. Save yourself like $100. (also pictured is a factory corteco centering bush that wasn't actually needed [don't waste your time/$])

    Click image for larger version  Name:	silvergHJSgiubo08.JPG Views:	0 Size:	130.9 KB ID:	147808

    Don't forget to push the CSB forward when torqueing, before you finish up.

    Click image for larger version  Name:	silvergHJSgiubo09.JPG Views:	0 Size:	115.6 KB ID:	147809

    Put copper paste on the new SS hardware and the O2s. O2s (post-cat) were replaced like 7 years ago for when I was passing smog with the euro headers/cat setup. Didn't use them with my v1s, so these are still pretty new.

    Click image for larger version  Name:	silvergHJSgiubo10.JPG Views:	0 Size:	54.2 KB ID:	147810

    New pipes ready to go in:

    Click image for larger version  Name:	silvergHJSgiubo11.JPG Views:	0 Size:	172.9 KB ID:	147813

    New gaskets:

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    Before installing the sect 1, I routed the O2 plugs through a hole in the heatshield (made when I had euro cats) and run along the tunnel, driver side

    Click image for larger version  Name:	silvergHJSgiubo13.JPG Views:	0 Size:	101.1 KB ID:	147812

    Hello

    Click image for larger version  Name:	silvergHJSgiubo14.JPG Views:	0 Size:	179.2 KB ID:	147815

    Once the pipes are installed, I pulled the O2 plus as far forward as possible, to meet the harnesses that need to be run behind the airbox and down tranny/clutch line area (already done in 2014). They'll reach a bit past the tranny brace. It's actually a good area for them to meet the harnesses as there are already some clips for the wiring of the tranny sensors.

    Click image for larger version  Name:	silvergHJSgiubo15.JPG Views:	0 Size:	39.4 KB ID:	147814

    Before removal, I had marked (sharpie) where the S pipes settle on the header outlets. I wanted to install the new pipes about 3/16-1/4" further back:

    Click image for larger version  Name:	silvergHJSgiubo16.JPG Views:	0 Size:	145.7 KB ID:	147816

    I also shimmed the passenger side hanger with some rubber blocks. This helped push this side out a little more.

    Click image for larger version

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    Here's the end result:

    Click image for larger version

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    For me, this is perfect. While I miss having some more exhaust noise sometimes, I don't think I'll touch this setup now that I have it exactly how I want. I'll put a muffler on my other M3 to enjoy those sounds.

    Click image for larger version

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    In the wild:

    Click image for larger version

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    Click image for larger version

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    Impressions: Shit, the cats eliminated all the drone and rasp 😭 Bright side - the airbox is even "louder." Power-wise, I've always noticed an increase in responsiveness when going catless, then a bit less when I would swap back. I have to say, these HJS are incredible. No perceivable loss at all, and zero smell, I mean zero. Seems like even less than stock, from memory.

    Overall, the engine/exhaust sound is a little too calm for my tastes (I like a little drone and overall raspy nature). The airbox is the shining star, and that makes up for it.

    in a perfect world, I'd have an electronically controlled "dump" installed at the end of sect 2, and open it up as desired. Maybe one day.

    Next up is swapping the airbox back to stock, stock tune, and getting a smog test. We'll see if the cat/o2 monitors go green
    🤞
    Last edited by Tbonem3; 01-12-2022, 02:01 PM.
    DD: /// 2011.5 Jerez/bamboo E90 M3 · DCT · Slicktop · Instagram
    /// 2004 Silvergrey M3 · Coupe · 6spd · Slicktop · zero options
    More info: https://nam3forum.com/forums/forum/m...os-supersprint

    Comment


      Holy smokes, your attention to detail, process, and sophisticated taste is inspiring. I thought I was OCD about my car, but I'm like a fat kid ( cause I am ) who plays Sunday football in the park compared to you . . . 250 LBS NFL Linebacker. And as you know, I have already stolen some of your ideas, like the Sportline wheels But, I still have so many questions, mostly related to the actual wrenching, as I am always so nervous I'll mess up 5 things to work on one This is my favorite thread, thank you for all the hard work and effort!

      Comment


        Ha thanks! I guess it just comes naturally because I've always done this sort of stuff since I was a little kid. But that doesn't mean you can't learn! Almost all mistakes can be fixed too. I'm also spoiled by having 2 garages, lots of tools, time, desire, etc... Oh and covid cash / trump/biden bucks I shouldn't have gotten 😂
        DD: /// 2011.5 Jerez/bamboo E90 M3 · DCT · Slicktop · Instagram
        /// 2004 Silvergrey M3 · Coupe · 6spd · Slicktop · zero options
        More info: https://nam3forum.com/forums/forum/m...os-supersprint

        Comment


          Cleanest stock muffler I have ever seen hands down!

          Nice update bro.
          2004 BMW ///M3 Carbon Black/Cinnamon 6MT
          2005 BMW ///M3
          Interlagos Blue/Black 6MT Dinan S3-R

          2008 BMW ///M3 Alpine White/Bamboo/6MT Track Build
          2000 BMW ///M5 Royal Red/Extended Caramel 6MT
          2004 BMW X5 Toledo Blue/Sand Beige 6MT
          2023 Toyota Supra //A91-MT CULG/Hazelnut 6MT


          Instagram

          Comment


            CA Smog time

            As you saw, I put quality cats into sect 1, partly for smell, but mostly so that the car would be pretty smog ready at any given time. Now all I have to do is swap out the airbox and ECU tune, and I'm ready to test after.

            Unfortunately, the entire strut bar must be removed, so keep the car on the ground and fixed so that alignment (camber) isn't lost. Though, I did mark my camber on my towers since I just got an alignment.


            Click image for larger version

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            Airbox off

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            Looks stock to meeeee

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            After stock tune, I'm able to get monitors to pass pretty quickly. The HJS cats ain't slackin.

            Click image for larger version

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            Passed with ease. My guy does a quick look in the engine bay, makes sure I've used my scanner to confirm readiness so we don't waste each other's time, and he's done in 5 minutes. With the HJS, there's no smell, so there's no thought that the car isn't stock underneath either.

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            Back home, do the reverse

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            Did a little polish/wax

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            Till next time...
            DD: /// 2011.5 Jerez/bamboo E90 M3 · DCT · Slicktop · Instagram
            /// 2004 Silvergrey M3 · Coupe · 6spd · Slicktop · zero options
            More info: https://nam3forum.com/forums/forum/m...os-supersprint

            Comment


              Originally posted by Tbonem3 View Post
              When the last Supersprint groupbuy started up, I contemplated the idea of getting the best cats (HJS) so that I would no longer have to swap headers/sect 1 every 2 years for CA SMOG. I also contemplated just having some cheap cats welded into my straight pipes, but I wanted top quality and HJS cats barely lose any power. The retail price of the HJS is eye watering, but the GB discount was hefty enough, I pulled the trigger.

              Despite the groupbuy taking a while, and issues with QC both in the manufacture and shipping of items, mine arrived in perfect condition, just in time for me to swap them in for my smog test that was due in a few weeks.



              Beauts

              Car up - I had noticed the giubo (OE, replaced in 2014-40k ago) had some new cracks forming, so I bought a new one (FCP warranty) ahead of time since you have to drop sect 1/2 to access D/S.



              SS "S" pipes out



              One of my other goals on this job, was to extend my muffler out a it more, especially (mostly) on the right side, to even the tips out. You can see how uneven it was, below. Yes, my tips are adjustable, but the factory metal piping that my tips attach to, are very short and there's no more room for me to bring the tips out further. (Only an issue with CSL diffuser)



              Next, dropped v-brace and sect 2



              Need to drop heatshield in order to reach CSB. Have to loosen CSB to push D/S back enough to get giubo out. You can access giubo without dropping sect 2 and heatshield, but then you're stuck.



              You can see cracks on the giubo. Made it almost 40k of hard driving.

              Click image for larger version Name:	silvergHJSgiubo06.JPG Views:	0 Size:	73.3 KB ID:	147807

              Giubo removed. Inspected the shift linkage. I had done it all recently enough, though, so still well lubed and everything looking as it should. (pictured is UUC DSSR & RE tranny bushes)

              Click image for larger version Name:	silvergHJSgiubo07.JPG Views:	0 Size:	77.6 KB ID:	147806

              40k giubo vs. new. You can buy the cheaper Febi brand, and in the package will be a factory SGF. Save yourself like $100. (also pictured is a factory corteco centering bush that wasn't actually needed [don't waste your time/$])

              Click image for larger version Name:	silvergHJSgiubo08.JPG Views:	0 Size:	130.9 KB ID:	147808

              Don't forget to push the CSB forward when torqueing, before you finish up.

              Click image for larger version Name:	silvergHJSgiubo09.JPG Views:	0 Size:	115.6 KB ID:	147809

              Put copper paste on the new SS hardware and the O2s. O2s (post-cat) were replaced like 7 years ago for when I was passing smog with the euro headers/cat setup. Didn't use them with my v1s, so these are still pretty new.

              Click image for larger version Name:	silvergHJSgiubo10.JPG Views:	0 Size:	54.2 KB ID:	147810

              New pipes ready to go in:

              Click image for larger version Name:	silvergHJSgiubo11.JPG Views:	0 Size:	172.9 KB ID:	147813

              New gaskets:

              Click image for larger version Name:	silvergHJSgiubo12.JPG Views:	0 Size:	82.4 KB ID:	147811

              Before installing the sect 1, I routed the O2 plugs through a hole in the heatshield (made when I had euro cats) and run along the tunnel, driver side

              Click image for larger version Name:	silvergHJSgiubo13.JPG Views:	0 Size:	101.1 KB ID:	147812

              Hello

              Click image for larger version Name:	silvergHJSgiubo14.JPG Views:	0 Size:	179.2 KB ID:	147815

              Once the pipes are installed, I pulled the O2 plus as far forward as possible, to meet the harnesses that need to be run behind the airbox and down tranny/clutch line area (already done in 2014). They'll reach a bit past the tranny brace. It's actually a good area for them to meet the harnesses as there are already some clips for the wiring of the tranny sensors.

              Click image for larger version Name:	silvergHJSgiubo15.JPG Views:	0 Size:	39.4 KB ID:	147814

              Before removal, I had marked (sharpie) where the S pipes settle on the header outlets. I wanted to install the new pipes about 3/16-1/4" further back:

              Click image for larger version Name:	silvergHJSgiubo16.JPG Views:	0 Size:	145.7 KB ID:	147816

              I also shimmed the passenger side hanger with some rubber blocks. This helped push this side out a little more.

              Click image for larger version

Name:	silvergHJSgiubo17.JPG
Views:	1036
Size:	80.6 KB
ID:	147821

              Here's the end result:

              Click image for larger version

Name:	silvergHJSgiubo18.JPG
Views:	1038
Size:	117.8 KB
ID:	147823
              Click image for larger version

Name:	silvergHJSgiubo19.JPG
Views:	1059
Size:	126.0 KB
ID:	147824

              For me, this is perfect. While I miss having some more exhaust noise sometimes, I don't think I'll touch this setup now that I have it exactly how I want. I'll put a muffler on my other M3 to enjoy those sounds.

              Click image for larger version

Name:	silvergHJSgiubo20.JPG
Views:	1053
Size:	100.3 KB
ID:	147822

              In the wild:

              Click image for larger version

Name:	xmaseve2111.JPG
Views:	1049
Size:	110.4 KB
ID:	147825
              Click image for larger version

Name:	HiddenValley10.JPG
Views:	1068
Size:	134.6 KB
ID:	147826

              Impressions: Shit, the cats eliminated all the drone and rasp 😭 Bright side - the airbox is even "louder." Power-wise, I've always noticed an increase in responsiveness when going catless, then a bit less when I would swap back. I have to say, these HJS are incredible. No perceivable loss at all, and zero smell, I mean zero. Seems like even less than stock, from memory.

              Overall, the engine/exhaust sound is a little too calm for my tastes (I like a little drone and overall raspy nature). The airbox is the shining star, and that makes up for it.

              in a perfect world, I'd have an electronically controlled "dump" installed at the end of sect 2, and open it up as desired. Maybe one day.

              Next up is swapping the airbox back to stock, stock tune, and getting a smog test. We'll see if the cat/o2 monitors go green
              🤞
              could I get the part number for hJS cats plz?

              I fed up from the smell of exhaust

              Comment


                Originally posted by Rudbari View Post

                could I get the part number for hJS cats plz?

                I fed up from the smell of exhaust
                Here's one for sale:



                You can go on Turner or ECS's website to get the SS part #. I don't recall.
                DD: /// 2011.5 Jerez/bamboo E90 M3 · DCT · Slicktop · Instagram
                /// 2004 Silvergrey M3 · Coupe · 6spd · Slicktop · zero options
                More info: https://nam3forum.com/forums/forum/m...os-supersprint

                Comment


                  Hey T i was thinking of welding in some HJS cats into my SS catless 044012, would you happen to know the size of the pipes?

                  Comment


                    if it's for the v1 stepped like me, it's 2.5" or 63.5mm o.d.
                    DD: /// 2011.5 Jerez/bamboo E90 M3 · DCT · Slicktop · Instagram
                    /// 2004 Silvergrey M3 · Coupe · 6spd · Slicktop · zero options
                    More info: https://nam3forum.com/forums/forum/m...os-supersprint

                    Comment


                      Originally posted by Tbonem3 View Post
                      if it's for the v1 stepped like me, it's 2.5" or 63.5mm o.d.
                      it is, Thank you buddy. looking at the prices might have to invest in a new set of pipes from SS. Might wait for a good sale this year.

                      Comment


                        Getting ready for 2022 now. No big plans, I still have a rear seat delete to get to, but am just doing a maintenance polish and seal with Mother's CMX protocol to get the car to its glossiest.

                        This is CMX polish with green (light polish) CSS pad, then CMX sio2/tio2 "ceramic" sealant applied.

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                        First meet of the year for me (end of Jan), in Malibu

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                        I missed having some exhaust noise too much, and put the OM SCORZA muffler back on. Kind of a shame, because I got the stocker perfect with the lemans tips, but oh well. The tips on the the og scorza are already perfect. Just needed a little polish.

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                        I got some videos I'll have to upload to youtube and link here. Car sounds so good. I think it was a little too much last time, being catless, but with the HJS cats now, it sounds so good. The HJS cats do calm it just a tiny bit, but not that much. The HJS are not "stuffy" sounding like most cats.
                        DD: /// 2011.5 Jerez/bamboo E90 M3 · DCT · Slicktop · Instagram
                        /// 2004 Silvergrey M3 · Coupe · 6spd · Slicktop · zero options
                        More info: https://nam3forum.com/forums/forum/m...os-supersprint

                        Comment



                          DD: /// 2011.5 Jerez/bamboo E90 M3 · DCT · Slicktop · Instagram
                          /// 2004 Silvergrey M3 · Coupe · 6spd · Slicktop · zero options
                          More info: https://nam3forum.com/forums/forum/m...os-supersprint

                          Comment


                            Sounds great. Car looks beautiful as always.
                            Past: '99 Hellrot/Dove M3 | '97 S14 1JZ | '06 Triumph Daytona 675 | '01 330I M-Tech I '99 Silvia S15 | Current: '96 Estoril/Black M3


                            Instagram

                            Comment


                              Thank you!

                              OP updated with mods list
                              DD: /// 2011.5 Jerez/bamboo E90 M3 · DCT · Slicktop · Instagram
                              /// 2004 Silvergrey M3 · Coupe · 6spd · Slicktop · zero options
                              More info: https://nam3forum.com/forums/forum/m...os-supersprint

                              Comment


                                My in laws got me the official Cobra Nogaro lumbar support.

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                                It works great, but I don't love the nutsack sticking out

                                Click image for larger version  Name:	NogaroLumbar4.jpg Views:	187 Size:	100.9 KB ID:	175239
                                DD: /// 2011.5 Jerez/bamboo E90 M3 · DCT · Slicktop · Instagram
                                /// 2004 Silvergrey M3 · Coupe · 6spd · Slicktop · zero options
                                More info: https://nam3forum.com/forums/forum/m...os-supersprint

                                Comment

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