Dyno Tomorrow

[markseven]

Hey Guys,

Tomorrow I'm dynoing the 325 (stock M20 with a Jim Conforti chip) at Autowave in HB. Is there anything special I should do prior to the Dyno runs? Is there anything I should make sure the tech addresses beforehand?

I just changed the engine oil/filter and the air filter, BTW

TIA,
Mark

[zaust]

Clean air filter and make sure there is no air leaks.

[markseven]

Clean air filter and make sure there is no air leaks.

Do you mean air leaks around the filter box / AFM or vacuum leaks?

[zaust]

Vacum leaks fella..

[markseven]

No one else? :neutral:

[Digitalwave]

Strap it on, be dissappointed.

[markseven]

Strap it on, be dissappointed.

Werd. I'm not looking for big numbers, just a solid baseline for shift points and torque curve. I'm expecting 140hp at the wheels.

[express_wagon]

Get a video and post results

[markseven]

Get a video and post results

I'll post the results for sure, but I don't own a video camera, although I may take the leap into the 1990's and buy one :D

[soul]

sweet, make sure to post up results. i'd like to have a car to compare mine to. (good running m20 vs. dying m20 with an oil leak)

[ptownTSI]

141.5 peak

[markseven]

Results

Here's the data:

147.3 HP @ 6200 RPM

148.0 Ftlb @ 4300 RPM

If BMW and Conforti's advertised numbers are correct, (167/177 HP and 164/177 Ftlb), then I am experiencing a 16.11% HP drivetrain loss.

Check out the AFR graph - what do you guys think? Lean?

[AndrewBird]

Looks lean to me, especially in the upper RPM's.

[markseven]

Here she is on the Dyno

[markseven]

Looks lean to me, especially in the upper RPM's.

Yeah, I have to look into that.