S54 Dyno Database

[fourmula1]

342hp on a dynojet
2003.5 dedicated track car ~93k miles...a lot of them on the track.
karb csl intake, catless headers, oem section 1 & 2, old agency power section 3
suspected fuel pressure issue...

If anyone has recommendations for troubleshooting fuel pressure issues in order of most likely culprits to least likely that would be helpful. Fuel filter under the car was just replaced. I'll replace the fuel pressure regulator next. Fuel pump after that?

[stash1]

Not sure if this has been posted in here, but here’s a recent dyno test of the ARH header system by Buildjournal:

https://thebuildjournal.com/reviews/...ts-and-review/

The data looks pretty consistent w/my own personal experience as well.

[Nick_P]

Stock cams?

Yes, stock cams. No other engine mods

[repoman89]

Evolve CSL airbox and full SS exhaust with cats, made ~331whp/ 247 torque…not bad. Did a run at ~338whp but decided to dial it down a bit for safety. This was on dynojet with AlphaN tune from Epic.

Stock cams?

[Nick_P]

Evolve CSL airbox and full SS exhaust with cats, made ~331whp/ 247 torque…not bad. Did a run at ~338whp but decided to dial it down a bit for safety. This was on dynojet with AlphaN tune from Epic.

[jet_dogg]

Looks down on power for the mods.

[stash1]

Looks too lean upto 6/6.5k if the o2 is to be trusted

Ya, you never know how accurate any of these guy’s snifers really are at the end of tha day!? All you can do is tune for optimum power, run quality fuel, and then try and manage the heat in the motor whether it be on the street or on the track., and then hope that the actual AFR's are within safe limits.

[eXpensiveGears]

Had to redyno for the nasa season ahead. No major changes from before but karb cal and SS headers and BW exhaust.

326 whp is fun when the car weighs 2900 with me in it!




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2900 lbs!? Please share the car diet...

[digger]

Looks too lean upto 6/6.5k if the o2 is to be trusted

[sc_tr0jan_m3]

Had to redyno for the nasa season ahead. No major changes from before but karb cal and SS headers and BW exhaust.

326 whp is fun when the car weighs 2900 with me in it!




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[LSBNick]

Really impressive numbers. What camshafts are you running?

I got similar numbers on my SS and Karbonius setup and everyone said I should be making closer to 330-340whp But this seems to be more in line with recent dyno sheets I’ve seen.

[heinzboehmer]

Wow … even more impressive.

So, just Super Sprint + CSL air box = around net 30 HP bump. Is that how we should read it?

Wonder what you would get if you had Schrick 280/272?

That’s going to be my setup :-)


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Actually 46 whp gain from stock with the airbox, SSV1s and PCS dyno tune.

https://nam3forum.com/forums/forum/main-forum/e46-2001-2006/1925-s54-dyno-database?p=140185#post140185

[HanSooloo]

Stock!

Wow … even more impressive.

So, just Super Sprint + CSL air box = around net 30 HP bump. Is that how we should read it?

Wonder what you would get if you had Schrick 280/272?

That’s going to be my setup :-)


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[heinzboehmer]

Really impressive numbers. What camshafts are you running?

Stock!

[HanSooloo]

I know I said I was done chasing power (and I am!), but I have all this incremental dyno data and recently got lighter wheels (~6 lbs per corner), so I couldn't help myself. Was back at the dyno this morning to see what effect they had on the whp.

Updated setup:

• 130000 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 ~17k mi ago
  • VANOS done ~17k mi ago, passes VANOS test with no issues
  • Engine retimed ~6k mi ago
  • Valve adjustment done ~6k mi ago
  • New front and rear TPSs ~2500 mi ago
  • New precat O2 sensors ~1500 mi ago
• No mechanical fan, just aux
• Rogue engineering water pump and power steering pulleys
• Dynoed at Sonoma racetrack so altitude is ~sea level
• 52ºF ambient temp
• 90% (!) humidity
• Running Shell V-Power 91 octane

Really impressive numbers. What camshafts are you running?