97 GL dyno

[striker2]

current mods consist of cool air intake, 2.5in custom bent exhaust, aeromotive adjustable fuel pressure regulator set to 40psi, FR wires, MSD coil pack.

[hectik1]

current mods consist of cool air intake, 2.5in custom bent exhaust, aeromotive adjustable fuel pressure regulator set to 40psi, FR wires, MSD coil pack.

Need to fix that A/F.

[striker2]

yeah but i dont have access to the school dyno anymore so im not sure how im gonna go about doing that. if i knew exactly what caused it then i might be able to fix it without the dyno.

[KerryKool]

What type of fuel were you running? Premium unleaded would smooth out the graph a bit more.

[striker2]

i was just running straight shell 87 octane

[jtour]

Your so lucky that you can use the schools dyno. Impressive numbers, it just means my 4 cylinder is alot slower than I thought.

[hectik1]

What type of fuel were you running? Premium unleaded would smooth out the graph a bit more.

Definitely a tuning issue.

[ButtonPuncher]

Yikes! At least bump your FPR up 5psi. It even looks like your power dips when your AFR peaks around 3700rpm.

Do you have any kind of data logger? Your fuel trims are probably maxed out.

HTH,
BP

[striker2]

i do not have any kind of datalogger. however when i looked at long term fuel trim after installing the FPR it actually showed the PCM taking away fuel.

as for tuning i would say that yeah its a tuning issue cause i have no tune. its a completly stock pcm

[ButtonPuncher]

You have to watch out though. The Long Term Fuel Trim is opposite from the short term. It's weird. A positive STFT means that you are running lean (it's adding fuel.) BUT a negative LTFT also means that you're running lean. I don't know why it works that way. Kinda funky.

See if you can find a local CEG'er with some decent data logging software.

BTW, did you move back south yet?


BP