Hi, I have the standard base model Vortech kit with ECU, FMU, Fuel Pump, Intercooler etc on a bog stock engine.

Ive found that my Air/Fuel Ratio is off the charts pretty much as soon as boost comes on. So we're talking 10:1 - which Im sure is robbing me of power as I only got 20% more rear wheel horsepower with the kit over standard, and I already have full exhaust and plenum spacer etc.

I cant remember what the FMU looks like as its been 6 months since I put it on, but is it somewhat adjustable? I really need to cull the amount of fuel going into the engine at this stage because its using too much and Im sure its robbing me of power.

Does it have an adjustment screw like the Bypass Valve?

Or could I bleed off the amount of air that goes to the top of the diaphragm so that I run less pressure?

Oh BTW my power curve with the Vortech is identical to the standard one (just higher)so the Split Second box tune is really good, but just my AFR is too high. The Horsepower line on the Dyno Graph is almost running parallel with the standard.

Cheers!
JK

 

You can see my other post here

https://g35driver.com/forums/forced-...it-03-5at.html

It has my Dyno Graph and background there

Thanks guys!