Non ZR-1 Dyno graph help

[Zr1 Destroyer]

Originally Posted by limey

Under boost im @ A/F of 11.3 As per the bottom graph, the top is NA.

Ry, the car is Fuel Injected, the O2 sensors were unplugged though as i was using a FAST wide band meter to read A/F, would that cause the ECU to miss read fuel adjustments and such and cause this problem?

I would think so since the fuel map feeds directly from the wide band o2's.

Is the car set up with a one or a two bar map from the factory and did you switch up to a three bar?


In my Syclone the factory shipped them with a two bar set up wich read fuel mapping up to 14.7psi, but after that boost level the ecm would go static and dump fuel and pull timing.....almost like a false knock situation.

With my PLX wide band now in my truck I had to ad a three bar map to read and let the ecm ad or subtract timing/fuel past the original 14.7psi two bar factory speed density set up.


Are you on speed density or running a maf?