Supersprint Centre Section

[J13NY S]

Hey boys, I appreciate this is a how long is a piece of string question but I’m contemplating a resonated Supersprint centre section.


Question is, in what way dose it change the note.

[glendog74]

It tends to eliminate much of the charecteristic M3 'rasp' iirc.

[J13NY S]

It tends to eliminate much of the charecteristic M3 'rasp' iirc.

Centre section alone, standard back box?

[DaveD_csl]

I don't have a CSL, just a regular M3 () but i'll give my input!

I recently put an Eisenmann Sport backbox on the car and when changing noticed the mid pipe had a bit of rust on it so ordered a resonated SS X-Pipe. I always loved the sound of the OEM exhaust, the Eisenmann made it that bit louder but not too loud if you get me.

When the X-Pipe went on i immediately noticed it had quitened the Eisenmann down, now its just a little louder than stock. The characteristic rasp is almost completely gone, can still hear it a bit but the X-Pipe seems to have had the biggest effect on it!

If you're a lover of the rasp the non-resonated X-Pipe is what you want!

[glendog74]

When the X-Pipe went on i immediately noticed it had quitened the Eisenmann down, now its just a little louder than stock. The characteristic rasp is almost completely gone, can still hear it a bit but the X-Pipe seems to have had the biggest effect on it!

If you're a lover of the rasp the non-resonated X-Pipe is what you want!

That's what i found, albeit with a Milltek rather than SS. I went from standard CSL setup to full Milltek and it did away with the rasp completely as well as adding an annoying drone... :banghead:

I am am now back to standard CSL exhaust x-pipe with a SS race lightweight back box and it sounds very nice imho.

I have recently acquired a SS unresonated x-pipe which is ready to go on in the next few weeks hopefully, so will no doubt will report back on how that sounds :smt055

[DazBlackCSL]

That's what i found, albeit with a Milltek rather than SS. I went from standard CSL setup to full Milltek and it did away with the rasp completely as well as adding an annoying drone... :banghead:

I am am now back to standard CSL exhaust x-pipe with a SS race lightweight back box and it sounds very nice imho.

I have recently acquired a SS unresonated x-pipe which is ready to go on in the next few weeks hopefully, so will no doubt will report back on how that sounds :smt055

If its not on mine first :hahaha:

[shimmy]

im about to fit the SS race back box with BMW OEM exhaust x pipe (like Glendogs).

Dont think i want unresonated centres section but maybe SS resonated centre section if it makes any difference

[glendog74]

If its not on mine first :hahaha:

Keep yer 'ands off Humphrey! :moan: :smt075

[DazBlackCSL]

Keep yer 'ands off Humphrey! :moan: :smt075

Soooo tempting as it looks at me every time I walk into the shed !! lol

Especially as my bloody exhaust is now blowing in the mid section :whistle:

[glendog74]

Especially as my bloody exhaust is now blowing in the mid section :whistle:

Take it back to Thorney... :whistle:

[glendog74]

Soooo tempting as it looks at me every time I walk into the shed !! lol

stop going into the shed then! :hahaha:

[DazBlackCSL]

Your safe anyway, ive just had it up on the ramps and its the cats that are blown, cracked around the welds ... new cats please (posting):hahaha:

[glendog74]

Your safe anyway, ive just had it up on the ramps and its the cats that are blown, cracked around the welds ... new cats please (posting):hahaha:

Sweet :thumbs:

[J13NY S]

Thanks for the info... but I'm still undecided on what to do.

So the best option is a non-resonated pipe effectively keeping it close to standard note?

What I was hoping to do was enhance the standard note.

[david]

No differences up to me, I have the SS resonated version, and after a +/- year use around tracks & autobahn's, the rockwool is half done/gone, and noise gets a note over standard setup, (rather like None resonated...)

SS give 2 dB less for the reso Vs the None reso on SS back cat section (probably when all is new) with sport muffler

You have just to consider that Noise restrictions are more and more applied and checked around tracks

With SS header + 100c SS cat + resonated SS Middle section + Rear SS muffler sport model, I'm Between 95.8/96.2 dB

with same configuration and Race muffler you shoud be around 100dB and probably over 100dB with lightweight SS muffler

The ring is 100db Max limit, and many checks are done from our days, and France 90% of the tracks applies the rule of 95db since 2010 :banghead: