S54 Dyno Database

[stash1]

^^^ I think that the lighter wheel results were def a result of the different days/weather conditions, because I've seen a few dyno's that showed just the opposite. I think that if you had swapped wheels back 'n forth during either session, there would've been a difference...albeit, a very small one (favoring the lighter wheels).

[heinzboehmer]

^^^ I think that the lighter wheel results were def a result of the different days/weather conditions, because I've seen a few dyno's that showed just the opposite. I think that if you had swapped wheels back 'n forth during either session, there would've been a difference...albeit, a very small one (favoring the lighter wheels).

Yep! I agree. Next time I do an experiment like this I'll make sure to take all measurements during the same session.

[digger]

You also need to be logging ignition timing when comparing mods especially with small deltas as weather corrections won’t account for that

[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?

[heinzboehmer]

Really impressive numbers. What camshafts are you running?

Stock!

[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]

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

[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.

[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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[digger]

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

[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...

[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.

[jet_dogg]

Looks down on power for the mods.

[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.

[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?