OR pushrods....


Just did some tests on the highway today..... but not with the G-Tech.... were I was there wasn't a flat piece of land for 100kms.

Anyways.....

From 4000 to 5500rpm (while in performance mode) I get a "groan", that stops when I shift.
It feels like from 100 to 140/160 is quickest in Performance Mode.... BUT 160-180 flys by in Normal Mode. Also I don't get the groan at all in Normal Mode.
I put the tranny in N while on the highway and revd her. No groan at all.
Infact.... not sure if this is right or not.... but I don't get any boost either..... only if I slam my foot down quick and hard, and the needle spikes up to maybe +5psi.... If I come onto it nice and easy.... the boost needle moves up and down a bit, but stays at -20psi.

Is any of that odd?

That groan is probably trans or diff related. I've found depending on outside temps, normal shift can be quicker than perf, as i get KR on the high end also. Shifting a little sooner avoids the KR. We're seeing the same effect there.

You should have no boost with a neutral or park rev. The PCM dumps boost unless you're in a drive gear. You're good there.

I'll check the MAP sensor again next time I'm out.......

What is the code for fuel pressure? anyone else think this could cause boost stacking?

I'm running a 3.2 pulley and my boost gauge is just barely hitting 10 psi......but then I am not running with a cat. :?

the cat shouldnt make a difference. Especially not a 6psi difference

FYI.... I was running 10psi w/o any mods.

That'* gotta be an exhaust restriction (not likely any more) or a bad map sensor. I'd love to see a mechanical gauge hooked up to the system for a comparison.

Do a 'dry run' with the car in D, E-brake set, wheels blocked, left foot on brake, rev to 3000 rpm'* and record the boost reading. Then do the same with a mechanical gauge.

OK....so you gained 6 psi and I gained 3 psi with similar mods...minus the cat. :?


That'* called a burn out.

I have to hook up a mechanical gauge. These factory electronic gauges are not very accurate.

Here'* the results from my 2nd scan.....

scan2.xls (in Excel Format)
FYI......the run doesn't actually start until cell 229.....

I took a few of the lines and calculated out the duty cycle for the injectors....
(PW x RPM / 1200)= Duty Cycle

Here'* a few calculations from my last scan....
20.48 x 5650 / 1200 = 96.42 (Top of 1st Gear)
20.94 x 5650 / 1200 = 98.59 (Top of 2nd Gear)
21.23 x 5904 / 1200 = 104.45 (Top of 2nd Gear)
22.11 x 4428 / 1200 = 81.58 (Middle of 3rd Gear)

So it clearly looks like the injectors are both maxed, and beyond their duty cycle.

I also noticed that the field "TG" (Transmission Gear) seemed to be "incorrect" when viewed against the RPM.

How many pounds are the Series 2 injectors?