S54 Dyno Database

[bigjae46]

Dyno said 50% humidity, weather app said 90%, so unfortunately no clear answer for that

If it was near any sort of climate control, I would suspect that 50% is closer to being accurate.


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[jet_dogg]

What fuel?

[heinzboehmer]

My car is completely stock right now, so took it in for a baseline dyno run.

Here's the setup:

• 126270 mi
• 100% stock US spec pre-facelift M3
• Converted MSS54 running stock 2501 HP software
• All engine maintenance done
  • Rod bearings replaced ~13k mi ago
  • VANOS done ~13k mi ago, passes VANOS test with no issues
  • Engine retimed ~2k mi ago
  • Valve adjustment done ~2k mi ago
• No mechanical fan, just aux
• Dynoed at Sonoma racetrack so altitude is ~sea level
• 70ºF ambient temp
• Dyno said 50% humidity, weather app said 90%, so unfortunately no clear answer for that
• All O2s are original, got new ones in a box ready to go in when my V1s arrive, but potentially left some power on the table because of this
• Running Shell V-Power 91 octane

269 max WHP, 230 max WTQ

First three runs were done back to back with one fan flowing air into the radiator. Fourth run was done after letting the car cool down for ~5 min and pointing another fan at the driver's side fog light area. I've attached all the individual runs to this post in case anyone wants to take a look at them.

Results were pretty much exactly what I was expecting. I think I told the dyno operator I was expecting to see 270 WHP. I'll be back when I get my CSL airbox back on and then back again when the V1s go on to get a full dyno tune.

[stash1]

Yeah I didn’t know that- but it makes sense. I get that there’s more variables- but dynojet would be better for comparison with others. I’ll be looking for another place that has dynojet before summer is over

Yeah, that would be best, most DJ's are within a couple percent of each other.

[Doost]

Yeah I didn’t know that- but it makes sense. I get that there’s more variables- but dynojet would be better for comparison with others. I’ll be looking for another place that has dynojet before summer is over

[digger]

If you are going to do a power run only (I.e. no actual tuning or before and after ) it’s a waste of money on anything but a dyno jet imo

[stash1]

Just got my car on a Mustang dyno yesterday. Three pulls showed it making around 288 whp. I’ll admit I know very little about these machines, but understand that they all put out different numbers. Aaand of course I didn’t do any kind of stock baseline before some of the bolt ons I added over the winter.

- Fabspeed Headers
- Evolve Tune
- 200 Cell Highflow
- SS Xpipe
- Eventuri Intake

Nice, thanx for posting! Yeah, it's nearly impossible to compare graph's from one type of dyno to another (w/the exception of maybe DJ's), or even load type dyno's (such as the Mustang), because the load can be varied and skew the numbers. Getting a baseline and sticking to the same machine is the only way to have any hope of measuring results vs. mods.

[Doost]

Just got my car on a Mustang dyno yesterday. Three pulls showed it making around 288 whp. I’ll admit I know very little about these machines, but understand that they all put out different numbers. Aaand of course I didn’t do any kind of stock baseline before some of the bolt ons I added over the winter.

- Fabspeed Headers
- Evolve Tune
- 200 Cell Highflow
- SS Xpipe
- Eventuri Intake

[siamkazi]

Bruh you got 40 from a tune?

He's a savage.

lol I wish, I have a Turner box, headers, high flow cats

[jet_dogg]

Bruh you got 40 from a tune?

He's a savage.

[siamkazi]

That's my boy right there, was this today?

What was before tune whp?

Hey Bud, it was 289 prior, this was on June 5th but I was in there today for a retune since i relocated my IAT (9am)

Dude, Steve is the man, his E36 is nuts

[jet_dogg]

That's my boy right there, was this today?

What was before tune whp?

[siamkazi]

Just got tuned - 330 WHP by HTE at EAS:

[smee123]

yeah they have themselves a good ole random number generator.

Dyno's are a tuning tool blah blah blah but i would advise anyone interested in seeing what their car makes to find a dynojet, as that seems to be the only consistent way remaining short of the black strip. Every tuner says their dyno is a heartbreaker and reads low they must goto the same school....lol

These other brand are dynos are good for tuning but operators can mess with a bunch of corrections to make them self look like gods when they are all just keyboard jockeys and there just isn't much to mess with to change the WOT output. There is no magic tuning where they magically unlock some previously undiscovered parameter. i mean a number of tuners or their customers have said they have calibrated their dynos to read same as a dynojet lol so they are just messing with corrections which makes numbers look better. I'm sure some aren't doing it to be deceitful.

Torque numbers are easily frigged if the rpm axis is wrong which it seems to be all too often on most brand dynos.

A bit late to the game but I thought I would clarify what is happening with their dynojet dyno. The winpep 7 boards fail and at this point the winpep 7 stack is considered a mature architecture so dynojet does not support it anymore. In the past they would fix them and they would send them on their way. Currently the only fix is them selling a winpep 8 stack to their customers. The issue with winpep 8 is that it has some sort of a calibration / scaling issue so the numbers are off. This is a well know problem unfortunately. The bigger name guys have already complained to dynojet, but there is no resolution as of yet.

[Anri]

DJ is not the best for actual tuning though

Hi Digger,

I agree its not the best but never forget "Close Enough Is The Enemy of Perfection"

Regards,
Anri