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Jun 17, 2006 | 08:42 PM

#11

OrangeF150

Teching In

Joined: Sep 2005

Posts: 13

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Parish..Your truck is awesome!I have watched vids of your truck from 1320video..nice truck!

I had everyone at work watch them, they were like "Holy Sh**"

Jun 17, 2006 | 08:50 PM

#12

MSURacing

Launching!

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Joined: Feb 2004

Posts: 298

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From: Minnesota

2004Denali, look into the PE tables. I am guessing the power enrichment function is kicking in.

Jun 17, 2006 | 09:14 PM

#13

parish8

single digit dreamer

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Joined: Mar 2002

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From: omaha ne

Quote:

Originally Posted by MSURacing

2004Denali, look into the PE tables. I am guessing the power enrichment function is kicking in.

those tables kick in every time you floor it. i had the same problem when i was tuning. i just tuned for 2nd gear and it ran a little rich in 1st and a little lean in 3rd but most of the run was in 2nd so i figured it was ok.

Jun 17, 2006 | 09:15 PM

#14

dewmanshu

Moderately Differentiated

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Joined: Nov 2004

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From: Maryland

Quote:

Originally Posted by 2004Denali

I run 11.5 at WOT but when it shifts into 3rd at WOT it will go to 10.5 any ideas as to why it richens up in 3rd gear?

Start a thread in Tuning and post up your MAF table and scan when it happens.

Jun 17, 2006 | 09:19 PM

#15

TURBO8

TECH Resident

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Joined: Apr 2005

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From: San Francisco Ca

Quote:

Originally Posted by MSURacing

You guys have to remember that the forced induction is going to be spitting more raw fuel out the exhaust than an NA car. So, you will be able to tune a little leaner than you would think because the O2 sensor will not pick up the unburnt fuel and it will look lean.

That really makes sense with the dynojet vs. the dyno pak. Just goes to show that if you tune for peak power on a dynojet you will be lean and have a greater chance to blow up your engine.

My tuner say the same thing, he will not tune on the dynojet, he likes the dyno pack better. however at such high boost levels I am afraid of leaning out the #7 piston. I hear the #7 piston will lean out at high boost levels.

Jun 17, 2006 | 10:28 PM

#16

04Denali

TECH Addict

Joined: Jul 2005

Posts: 2,060

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From: Stockton, CA

Quote:

Originally Posted by dewmanshu

Start a thread in Tuning and post up your MAF table and scan when it happens.

Thanks for your input. I just have autoenginuity scanning software and a wide band. 1st and 2nd are perfect and 3rd is rich, I guess that is better than lean.
Mark

Jun 17, 2006 | 11:05 PM

#17

TURBO8

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From: San Francisco Ca

Quote:

Originally Posted by TURBO8

I was thinking about it, and I remember that it was a bigger difference in the afr it was 10.0's at 17psi on the dynojet. 11.2 on the dynopack at 11psi on the dynopack. Boost levels did change though. I think I will start a new thread and compare both on the same boost level and tune.