Do you mean the max voltage clamp that is set at 4.9? the voltage banks are at 4.95. just want to make sure i adjust the right thing. can i test drive it after this adjustment if i pay attention to my afrs. or do you suggest i have it retuned before i try anything. Thanks!

 

on what Sharif said.

As for Vegas peeps/sites, try:

http://www.gzcon.org/


.

 

Adman do you know if Sharif is talking about the voltage banks which are set at 4.95 or the maf voltage clamp set at 4.9. i think hes talking about the maf voltage clamp but he said 4.95 instead of 4.9

 

Yeah. I believe he means the MAF voltage clamp.

I think you could change that to 4.85 and do a test drive to see if it helps. However,
you might need to have them change the other parameters in order to see a difference.

 

thanks ill give it a try. is that your pic in your avatar? havent seen it around in vegas. i have seen a few z's that looked supercharged around town.

 

If you see this z around town you know who it is now.....
I only take it out maybe once a week if i am lucky.

 

Sorry bro, I am looking at screens, talking on the phone, and tuning on the dyno at the same same. The MAF voltage clamp needs to be set at 4.85 or lower.

 

Torque line resembles horsepower. Should be horizontal line. Can not explain.
Peak horsepower reading(322) is not peak horsepower.

 

Yep. Looks a little more "supercharged" now. And, if you're lucky,
you might even see me and JET MECH on the 215 at the same time.

 

Thanks Sharif. You solved my problem in practically 30 min without even looking at my car! Car runs great now. Just have to avoid the urge to change the wastegate spring...

 

My pleasure....glad it was an easy fix.

 

Well, I thought the prob was fixed but it still occurs once in a while, at higher rpms. Usually a little above 6000. I currently have the maf clamp set at 4.8. I been reading and have seen clamps as low as 4.7. How low is too low? Cause I want to try decreasing it a little more to see if if the problem completely disappears. From my understanding the more voltage there is the more air the ecu detects which will increase fuel delivery. So if you drop the clamp it will cause the af to become leaner? I do have a af guage so I can monitor this.

 

yes and yes. Try it a little lower but you should really be using an AF gauge for this process. Otherwise you are flying blind and can damage your engine.

 

Wow pretty cool help thread. Props to u sharif

 

So, Im now down to 4.75 and there is definitely a difference. Its seems more of a hiccup now instead of an abrupt stop at around 6500 rpms. It almost feels/sounds like a backfire. Do you think its more of a fine tuning issue now? or should i go to 4.7 and try again. My afrs arent leaning at all. stays at high 10s and low 11s. You mentioned that there may be other parameters that may have to be fine tuned. is it just the voltage that need to be adjusted? or does it involve timing and/or fuel map adjustments?

 

 

Maybe it's time to put it back on the dyno. This is probably the fastest way to sort out the fine tuning. Also throw in a set of fresh spark plugs, gapped down to .029.

 

I agree, I do need a dyno and a tuner, but noone here in vegas so i gotta plan a trip soon to vegas or california i guess. I have been playing around with it though and my voltage is now down to 4.7 and is making it to redline most of the time without stuttering. my afrs also looking pretty good. 11.5 - 11.8 after it gets out of closed loop. my question is can you tune closed loop? the tuners i went to implied that you cant. however, ive been reading and have seen people modifying the short term fuel trim to get the afrs they want in closed loop. any thoughts? heres my afr on a second gear pull. i did a third gear pull as well but its on my other computer. its rich at wot up until open loop takes over at about 5300 rpm.

 

You can't mess with closed loop without a reflash (osiris, ect), or full standalone.

Also, open loop takes over as soon as the pedal is on the floor. It's not RPM dependent.

 

So you can't trick the ecu by adjusting voltage being sent to the ecu by oxygen sensors?