powerlogger file review

[jpwalt1987]

I have been helping a local guy with his GN for quite sometime now and have finally gotten to the tuning phase of it. I ordered a 6.1 chip from Eric but i need some ideas on why i cant get rid of some of this knock. I had to add quite a bit of fuel to the WOT and MID boost setting because of the correction factor. Timing is down to 18.4 degrees and targeting an AFR of 10.8:1 and 15 psi of boost. This is straight 93 octane with no ethanol. This car is fairly stock. stock intercooler, turbo, heads, intake and cam.. Even has a stock downpipe. It has 60s, a new complete fuel system and hot wire, AEM wideband, 3,5 MAF and translator. can someone look at the files above and give me some ideas? thanks for any help. Jeremy

 

[earlbrown]

Did the car have plenty of gas in it? I noticed a trend where it would go lean as hell for no reason.

My car used to do that low on fuel when I had the fuel pump hung at the stock height.

 

[jpwalt1987]

Nope. Full tank of 93. The lean spot is what I don't know about. Why? This is a brand new racetronix 255 and haner assembly, new fuel filter, Accufab regulator and racetronix hot wire.


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[jpwalt1987]

Anyone?


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[aminga]

2 bar map?

 

[jpwalt1987]

Yes


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[jpwalt1987]

And it has the AEM gauge wideband.


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[aminga]

Yes


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What wideband. The factory NB says lean but the wideband is reading full rich. If it's a 6.1 chip it's leaning it out

 

[TurboBob]

where in the logs are you looking?

what chip is in there now?

Bob

 

[jpwalt1987]

It's a new 6.1 chip from TT. Just got it last week. This car was a basket case before I started working on it. The wideband is a AEM gauge style. I am looking at that lean spike right as it comes up on boost. I added some fuel to get the mid and wot correction factor down some. I am going to look at the file again just to make sure I didn't overlook something.


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[blackgn1]

I'm seeing over 30psi of boost. Is this correct?

 

[jpwalt1987]

I'm seeing over 30psi of boost. Is this correct?

No. It's 15 psi on the PL and the boost gauge.


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[blackgn1]

For some reason I'm seeing over 30psi of boost. It might be my SD Chip Powerlogger settings.

 

[jpwalt1987]

For some reason I'm seeing over 30psi of boost. It might be my SD Chip Powerlogger settings.

It's only a 2 bar map sensor on this car. I use an SD chip for my car also.

This is the spot I am talking about on log 001.


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[jpwalt1987]

This is log #2.

It had a real lean spot when I go wot. Then it goes to 10.4:1@ 14 psi for just a second then spikes to 12.29:1 and then back to 10.7:1 still at 14 psi before I let out.


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[blackgn1]

Yes. That makes a difference. Wideband correction is trying to keep the AF settings but it keeps going lean.