Thread: '07 GP Posting progress on my tune. Follow if you want. I'll try to be informative.

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  1. #1 '07 GP Posting progress on my tune. Follow if you want. I'll try to be informative. 
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    2007 L32 HP Tuners Software

    105 Springs
    Double roller timing chain
    3.69 final drive
    255lph fuel pump
    104 plugs
    VS cam
    Fenderwell Intake
    Headers, custom exhaust
    3.4 pulley, roughly 9.5psi near 6k rpm.

    I have been having a hard time keeping the car in open loop. On my next scan I'm going to set PE to 0% TPS and set the commanded AFR to 14.7. Then I will use the TPS adder to "add" -3.5 to the commanded AFR which will make it 11.2 and command this from 35% up.

    I'm commanding 15 degrees of advance. I can post tune files and scans once I figure out how.

    I hear some people say you must tune using only the MAF table and others say to tune VE by failing the MAF in the programing. I haven't found a way to completely fail my MAF so I will be adjusting the MAF table with my data from the scans. I have set up a commanded AFR % error table plotted against both the MAF frequency table and one for the VE table as well. Updates will come in the morning after I record on the way to work.
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  2. #2 Re: '07 GP Posting progress on my tune. Follow if you want. I'll try to be informativ 
    GXP Level Member GTPpower's Avatar
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    I just set closed loop enable to the max temp. That way it always stays in OL.

    I don't usually tune VE on these cars, but it does seem like 04+ may use that table more than the previous gen.
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  3. #3 Re: '07 GP Posting progress on my tune. Follow if you want. I'll try to be informativ 
    GTP Level Member
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    On my 07 I tried to briefly try the VE tune or speed density tune and it ran like crap if it ran at all.
    2017 Buick Regal 2.0 Turbo (SOLD 2007 Grand Prix GT. Front and rear PLOGs, 1.8 roller rockers, CAI, HPTuned, 3.4 pulley, TEP transmission, 90# springs, rollmaster single chain, Impala front brakes d/s rotors.) Past (Pontiacs) Grand Prix- 97 GT, 03 GT, 04 GT, 04 Comp G, 78 Trans am, 92 Trans Am.
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