S54 Dyno Database

[SQ13]

In Austin, TX on a dynojet. Weather: 77°F and 68% humidity.

2005 M3 with 73k miles
Karbonius CSL intake
Stock catted headers
RE resonated sec 1
RE X-pipe sec 2 w/ closed cutout
Stock muffler
HTE remote dyno tune
93 octane fuel (Shell FWIW)

Max HP: 297
Max TQ: 241

I did not get a baseline reading with stock intake and the old Epic tune unfortunately. Karb snorkel is still on its way to me, so I wasn’t able to run it with that and an IAT relocation. I want more power, but my exhaust setup is def not ideal. So the plan is to get Euro or AA headers, catted sec 1, dual pipe sec 2, and Supersprint street muffler. And I’ll prob do a SPAL fan conversion as well. I’m hoping all of those changes will put me at 330-340 WHP.

I’ll try to get a baseline for my track car. Currently it has CPI headers, BW race exhaust, and SPAL fan only. We’ll see what it puts down after it gets a Karb intake, IAT relocation, and HTE tune. 350-360 WHP would be cool.

Also, the intake is fucking loud from the outside. The shop’s dB meter read 116 dB… Insane.

[jet_dogg]

You'll probably dyno 2-3 more on theirs since they have the fans but then it's warmer here so might cost you a couple as well.

[heinzboehmer]

Yeah maybe. Maintenance is up to date, so I'm fine with it. If there's anything wrong with it, then it's probably something internal to the engine. I'll do a rebuild when it's necessary, but I'm happy with it for now.

Maybe next time I drive down to LA, I'll throw it on EAS's dyno, just to see what it makes on that lol

[jet_dogg]

Heinz, I still believe your car is about 10hp down on power for what it's worth though you don't care.

[heinzboehmer]

Gain of 42whp/25tq, that must be nice

This is a good comparison and the car made 62whp more than stock - https://nam3forum.com/forums/forum/m...-numbers/page2

His engine has 30k miles less and the SS-dual section 2 with muffler, so that's probably worth ~15-20whp. As you said, your current power level is solid.

Looks like that car's power increased by 19.8%. My gain was 17.2%, so not super far off. If I manage to find 7 whp (better fuel, colder temps, rest of the SS exhaust, etc.), I should be able to bump my percentage gain up to 19.8%. The screen won't show 348 whp, but I can at least same the gain was the same

No, but in reality this is plenty of power. Certainly more than what I need. From now on, I'll be putting money towards track days to try and work on that driver mod instead of trying to chase power.

[Slideways]

Gain of 42whp/25tq, that must be nice

This is a good comparison and the car made 62whp more than stock - https://nam3forum.com/forums/forum/m...-numbers/page2

His engine has 30k miles less and the SS-dual section 2 with muffler, so that's probably worth ~15-20whp. As you said, your current power level is solid.

[heinzboehmer]

Stock:

269 max WHP, 230 max WTQ

CSL airbox and PCS canned tune:

294 max WHP, 245 max WTQ

Once again on the dyno. This time with SSV1s and Paul doing remote dyno tuning.

Updated setup:

• 129082 mi
• US spec pre-facelift M3
• Karbonius full carbon intake with carbon snorkel
• Kassel MAP
• Stock CSL IAT location and sensor
• HP converted MSS54
• SSV1s and SS oversized section 1 with HJS cats
• Stock section 2 and 3
• All engine maintenance done
  • Rod bearings replaced ~16k mi ago
  • VANOS done ~16k mi ago, passes VANOS test with no issues
  • Engine retimed ~5k mi ago
  • Valve adjustment done ~5k mi ago
  • New front and rear TPSs ~1500 mi ago
  • New precat O2 sensors ~500 mi ago
• No mechanical fan, just aux
• Rogue engineering water pump and power steering pulleys
• Dynoed at Sonoma racetrack so altitude is ~sea level
• 75ºF ambient temp
• 50% humidity
• Running Shell V-Power 91 octane

Dyno graph comparing the fully stock run to the CSL/SSV1/PCS dyno run:


315 max WHP, 252 max WTQ

Gained 46 whp/25 wtq and both the power curve and AFRs are looking much better than they did stock.

I didn't realize the dyno had been set to STD correction (pretty sure it was set to SAE the previous times I was there), so I left thinking the car made 323 whp. It was honestly a bit disappointing to come home and see 315 whp when I loaded up the dyno runs. Oh well, I'm not really trying to set any records and the car feels awesome, so I'm satisfied. Plus, it's not like 315 whp means the car is slow. Maybe I'll do cams someday, but for now, I think my power chasing has come to an end.

And just because I can, here's the same run with STD correction. Goes to show how little absolute numbers actually mean:

[Rudbari]

Finally got to the dyno for some fine tuning on my turbo S54.

at around 11-11.5 psi it made a final number of 529 hp and 428 tq on stock internals stock clutch and e85 AFRs were in the mid 11's

tuning done by HTE on stock DME MSS54HP


Some videos too

before anyone says anything, i didnt catch that the dyno HP and TQ were not scaled equally thus the numbers will not cross at 5252 but the numbers are accurate.

Amazing power and great tune from hassan .
Did you test 60-130 times ?

[stash1]

Anyone own a Dragy? They seem pretty cheap and accurate.

I have one, just haven't used it on the M3 yet, but it was within a 1/10th and less than 1 mph (1/4mi) on another one of my vehicles.

[digger]

Anyone own a Dragy? They seem pretty cheap and accurate.

[stash1]

^^^Nice Anri, looking forward to some more updates/details!

[Anri]

Stan,

Another S54 being cammed and turned.

Very healthy stock S54 with only free flow
exhaust system.

Base run on the dynojet I use for long time now
passes were from 292-296rwhp. 239tq.

Likely next week or so I will be ready
whit the mods and back on the dyno for
tune. This time I will try very hard to beat
my other S54 I have done.

Fuel will be 91 pump no blends not additives.

Dyno chart at the end of the video.

Regards,
Anri

[stash1]

^^^Congrats man, nice numbers, think I saw your post on FB! But FYI, your numbers don't cross @ 5,250.

[nextelbuddy]

Finally got to the dyno for some fine tuning on my turbo S54.

at around 11-11.5 psi it made a final number of 529 hp and 428 tq on stock internals stock clutch and e85 AFRs were in the mid 11's

tuning done by HTE on stock DME MSS54HP


Some videos too

before anyone says anything, i didnt catch that the dyno HP and TQ were not scaled equally thus the numbers will not cross at 5252 but the numbers are accurate.

[S54B32]

The reason i said it doesn't look like AFR is the stock CSL and PCS tune show the same fundamental behaviour. The issue is from ~6000rpm upto 7500rpm where the power noses over quicker than it should but the AFR dont look out to lunch enough to cause that.

With the stock CSL the AFR is fairly flat 12 to 12.5 for red and blue so fairly constant but there is drastic change to the power curve.

To me it looks like the inlet cam being slightly slow to reach the correct amount of retard but it does eventually wakes up and gets there at 7500rpm.

I'm not sure if you have the capability to log ignition timing, and cam position during a dyno pull but it would probably help you troubleshoot

+1 on this! Logging is the way to go.

But with this consistency in the runs (6k-7.5k rpm), you should easily replicate this while doing a street pull (and safe that money from dyno time). So install testo and do some logging to find out what happening.
I´m very very sure Paul knows what he doing (way more than me), otherwise i could thinked of a bit mismatched Vanosmap.

If i remember correct, the impact of the knock sensor input was higher in some particular rpm areas. Maybe 2 Cylinders have a bad knock sensor or cylinder leakage from headgasket or need some more fuel individualy because every engine is different.
Also it can depend on what CSL version for instance PD31, PD11...etc. is used. I have seen differences in these CSL base tunes in terms of knock sensitivity. I prefer PD31 and have seen other version with PD31 values transfered.