My Camaro is pulling timing!

[ProudLS]

Originally Posted by DSteck

Holy crap... and I thought 3kPa was bad!

Which parameter you are talking about? I thought I only need to recalibrate the MAF when changing the CAI..!!

[DSteck]

Originally Posted by ProudLS

Which parameter you are talking about? I thought I only need to recalibrate the MAF when changing the CAI..!!

We're talking about manifold absolute pressure during WOT. Typically, you want to see MAP as close to barometric pressure as possible... the bigger the difference between the two, the more restriction you have.

[2SSCAMARO]

Originally Posted by DSteck

I get pissed when I see my manifold pressure drop from 99 to 98 by 7200rpm.

Are you saying that maintaining 100 for the entire run after launch is achievable? I hit 100 at launch but then varies between 98, 99, 100 to the traps.

[DSteck]

Originally Posted by 2SSCAMARO

Are you saying that maintaining 100 for the entire run after launch is achievable? I hit 100 at launch but then varies between 98, 99, 100 to the traps.

Desired, yes. Achieved... sometimes. With the key on and engine not running, I see 99kPa. During a WOT pull, I can maintain that 99 until about 6500, where it drops to 98.

It's more worthwhile to compare MAP to barometric pressure, instead of just thinking about MAP in the number itself.

[ProudLS]

Originally Posted by DSteck

Desired, yes. Achieved... sometimes. With the key on and engine not running, I see 99kPa. During a WOT pull, I can maintain that 99 until about 6500, where it drops to 98.

It's more worthwhile to compare MAP to barometric pressure, instead of just thinking about MAP in the number itself.

Are you referring to BARO High and Low? I have it set as 98 and 84 kpa in my stock tune, should I adjust these parameters? Is there other parameters I should look at beside this? Thanks a million.

[DSteck]

You don't have to adjust anything. It's ju...


Nevermind. I'm too brain mushed today.

[ProudLS]

aha ok I am just keen to know every single detail

[ProudLS]

Just to make sure that I got that right, do I need to do anything besides recalibrating the MAF for installing new CAI? Thanks,

[2SSCAMARO]

Originally Posted by ProudLS

Just to make sure that I got that right, do I need to do anything besides recalibrating the MAF for installing new CAI? Thanks,

You need to do a proper cruise log to see where your long term fuel trims are at after adding the CAI. Some can be cause of positive fuel trims (lean condition). This on it's own is not cause for worry BUT positive fuel trims get added to the open loop/PE tables during wide open throttle operation and can be cause for an undesireably rich AFR. Log your LTFT's and adjust accordingly to get them around -2.

[DSteck]

Originally Posted by ProudLS

Just to make sure that I got that right, do I need to do anything besides recalibrating the MAF for installing new CAI? Thanks,

Not really. Just make sure the car is in pure MAF mode when you're doing it. You might have to play with the P0068 criteria to prevent reduce engine power from happening after WOT pulls.

[ProudLS]

Originally Posted by 2SSCAMARO

You need to do a proper cruise log to see where your long term fuel trims are at after adding the CAI. Some can be cause of positive fuel trims (lean condition). This on it's own is not cause for worry BUT positive fuel trims get added to the open loop/PE tables during wide open throttle operation and can be cause for an undesireably rich AFR. Log your LTFT's and adjust accordingly to get them around -2.

Got that already but I was worried if I missed anything related to CAI tune in WOT mode. Thanks

[ProudLS]

Originally Posted by DSteck

Not really. Just make sure the car is in pure MAF mode when you're doing it. You might have to play with the P0068 criteria to prevent reduce engine power from happening after WOT pulls.

You are the best..

[Pro Street]

I have the CAI installed now and just maybe if I get some time this weekend I will get back started on the tune. It has been raining here but to be clear the next couple of days!
ProudLS what part of Texas you in?

[DSteck]

Originally Posted by ProudLS

You are the best..

Let's not say things we can't take back.



Just because it's raining doesn't mean you can't begin to calibrate the MAF. WOT is a nightmare to do in the rain, obviously, but everything else is still easy enough. Please, please, please tell me you have a wideband to install before the catalytic converter to do your WOT tuning!