The problem I had is stated below. I fixed the problem by changing from the 99+ 1.8 injectors, to the 305cc green top supra 7mge injectors, and changing my fuel pump from the 255hp walbro, to the 190hp walbro.
I now see my AFR's in the 11.5 range throughout the rpm band. Im peaking at 11psi, then quickly settling to 9psi, till redline. If I go for 1psi more, I see AFRs in the high 12s and 13s. Maxxing out the current setup safely
... time for a megasquirt.
Hello everyone. Ive been dealing with this problem all day long. I have my zeitronix WB hooked up and im seeing 15.0+afrs at 9psi.. Hitting 13.3 by redline.. I know my sensor is good, just tuned an evo yesterday. Mods are in my sig, plus here are some more details on my car and what ive tried to do to fix this problem..
New fuel filter, new lines
new walbro 255hp
vortech 6:1 disk
1.8 99+ injectors
02 clamp installed w/ voltage at .30
checked all boost lines, boost leak test..
new ngk iridiums, new magnecor wires
Ive tried running it with the 02 clamp off the car, same problem. I tried adjusting it super rich .19, nothin...
the car Idles at 14.7:1 on cold start up, same when its warm...so I dont think it could be the 02sensor..
I dont know if the vortech fpr is kickin in or not since I dont have a fuel pressure gauge hooked up yet. Ill be installing a gauge tomorrow.
This has been hurting my brain.. Any thoughts?? Greatly appreciated