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04 GTO LS1, SW LT's & K&N + my tune

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Old 12-23-2005, 08:57 AM
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Default 04 GTO LS1, SW LT's & K&N + my tune

Dyno'd yesterday -heres the best #'s. K&N, Stainless work LT's.
This is with cats, and stock cat back.
319.6HP/338.Trq

Bone Stock (back in feburary) was
299HP/326 Trq

I have to admit I was hoping for a bit more. AFR was right on 13:1, although it was bumpy in places. The loss in low end TRQ is bothersome too. I noticed that a while back when I put the K&N CAI on it. I think I may take it off and go back to the stock intake & MAF calibration.
Attached Thumbnails 04 GTO LS1, SW LT's & K&N + my tune-stock_versus_sw_lt_kn.gif  
Old 12-23-2005, 03:43 PM
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Are you a auto if so those numbers are ok but if your a m6 i'd say your hurting.
Old 12-27-2005, 08:34 AM
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yeah its an m6. A tuner over @ LS1GTO has been emailing me helping me out with some things.
Old 12-27-2005, 08:51 AM
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Throw a diagnostic on there. Looks like some KR up top maybe? Check to make sure the exhaust is not touching anywhere to cause false Knock. Car should make around 330 RWHP properly tuned.
Old 12-27-2005, 08:54 AM
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there was some KR up top. my final AFR was a little lean, and I had too much timing up top. I didn't have enough time to get it all worked out though.
Old 12-27-2005, 09:06 AM
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Yeah...definitely get it some more fuel and less timing up top...one of the hardest things for people to realize is that sometimes these cars just simply don't need much timing up there.
Old 12-27-2005, 09:50 AM
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thanks for all your input.




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