toddk911

Anyone dealt with a maxed out MAF???

I am running Huntley stg 3 and that seems to be the issue.

reno808

How are you proving that?

toddk911

Havn't taken voltage readings yet, but no matter how much fuel is added up top it is going lean.

It is not the injectors as I added fuel with the "override" via the FQS and then it got richer. Seems like the MAF is clipping at around 5,500 rpm.

special tool

Put your MAF analogue on the ZT2
"TPS" in line.
Fill with race gas and raise boost.
Tell me the number at redlne.
You may do this in only second gear if you wish - gear loading does not reflect on hp as it does on torque.

toddk911

Thanks ST. I will do tonight.

Which TPS line?? I think there are 2 coming out of the DME right?

special tool

Whoaaaaa dude....
The tps line OF THE ZT2!!!!!!!

toddk911

Ahhhh

reno808

LOL

TRP951

I was just thinking earlier but what are you running for a fuel pump?

reno808

Also what kind of Injectore are you running? Do you have an AFR?

TRP951

thats what I was thinking is that maybe his injectors or fuel pump cant supply enough fuel for the turbo

reno808

YUP or fuel filter or maybe that arc2 is no good

toddk911

I added more fuel with the FQS and the top end richened up a lot, so the injectors are capable of the flow. 450cc (42lb) and this is even at 15psi.

Fuel pump is stock. But I have always readd in here fuel pump is fine til about 400hp+

Fuel filter changed about 4 years ago.

Again, once the FQS was adusted up to the 6% add, a lot more fuel was added up to redline. So injectors are fine and pump is fine. Something else is killing the signal for the fuel, as the FQS is AFTER the MAF, correct??

toddk911

A/f is fine and plenty rich all the way to 5,500 then goes lean.

reno808

Is the cycling valve still in the car? Did you check the O2 sensor?