2010 ss + procharger

[tokymon]

have 2010 ls3 6l80e with prochager that was tuned with hp tuners mail order
stumbles with any apply of the throttle
i have a scan i can post up when i get home on other computer
but it was done with efi live as to not having the beta for the camaro

car is almost undriveably any help on where to start first

[Mep_q8]

did u change out the injectors? or stockers in their? sounds like its too rich

[tokymon]

yes they are fass 68# inj.
i guess if any one want to see the logs they are on efi live forum under same title
can upload here file are invalid

[c131frdave]

Are they rated at 68lbs. at 58 psi or 42psi? My new 42#rs were rated at 42psi, so I had to change them to approx 47 for my system. Cured all problems.

[tokymon]

i dont think its the injctors afr looks good
but if you breath on the trottle it seems to miss and in the logs it goes to like -5 deg timing

[Mep_q8]

AFr might look good, but how are you fuel trims?

Log the Timing advance pids and see whats pullig it... I'm sure it's Tq MGMT, but that shouldn't make it stumble....

[Waker]

Sounds like the MAF is scaled incorrectly.

[Waker]

Also, have you disconnected your battery for 30 sec. The 2010 Camaro is notorious for startup issues after a flash.

[firehawk26]

With the new beta from support i didnt had any startup issue at all .

[Waker]

With the new beta from support i didnt had any startup issue at all .

That's intresting because I run the new beta and have had startup issues.

[99LS1SS]

I'm having the same problem but not quite as dramatic as your. What was told to me was to increase the Coastdown Idle Spark Advance in the RPM and g/cyl area that you are having trouble with. I've changed mine this morning but I haven't been able to log a run. I'll log it at lunch and see if it helps.
Hopefully this will give you some sort of a starting point.

[99LS1SS]

One other question. Are you running MAF only or MAF and Dynamic Airflow.

The reason I ask is because when I went back and looked at my tune that didn't have this problem I had Dynamic Airflow turned off and I was running MAF only. I'm not changing the Coastdown tables unless I still have the problem running MAF only.

Sorry for the confusing posts.

[tokymon]

yes it is running maf and dynamic air flow
tryed failing the maf so it would run sd but problem still exsists

[99LS1SS]

Try running MAF only. See if that helps.

Post up your tune too.

[Mep_q8]

post up a log and tune!

[PitchblackC3]

Wouldn't it have the L99 with the 6l80e and not the LS3?
Maybe you are having an issue with the active fuel management on the L99.

[Waker]

Wouldn't it have the L99 with the 6l80e and not the LS3?
Maybe you are having an issue with the active fuel management on the L99.

Yes it would...

[Redline MS]

For starters...where did the data come from for the injectors?? None of us who tune regularly have seen any credible data on those injectors.

I would at least get some ZR1 52's and scarf the data from a ZR1 calibration. Next I would dial in the MAF properly. Most certainly can run that setup on full MAF.

I have not been that impressed with the MAF location with the ProCharger plumbing and have seen it really disrupt the airflow at low MAF hrtz. This can cause issues down there.

Another word of advice......make sure the engine calibration is spot on or you will end of chasing trans issues next........

[Waker]

For starters...where did the data come from for the injectors?? None of us who tune regularly have seen any credible data on those injectors.

I would at least get some ZR1 52's and scarf the data from a ZR1 calibration. Next I would dial in the MAF properly. Most certainly can run that setup on full MAF.

I have not been that impressed with the MAF location with the ProCharger plumbing and have seen it really disrupt the airflow at low MAF hrtz. This can cause issues down there.

Another word of advice......make sure the engine calibration is spot on or you will end of chasing trans issues next........

This is actually the easiest way to tell if your MAF scaling is skewed. If your shifts got worse or are poor your MAF is incorrect.

[tokymon]

cant post tune because i didnt have the beta when i did it but its on efi live forum under 2010 camaro + procharger