disappointed !!!! 4 thens slower
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disappointed !!!! 4 thens slower
hey guys i need ur opinions!!! i have a 99 ta i went 7.4 with my ls1 heads cam full bolt ons. i blew the motor and now went lq9 same heads same cam same everything. except the converter and exhaust. the ls1 had 5000 stall with true duals 3'' h-pipe. now the 6.0l has 3800 nitrous stall with tsp y pipe magnaflow cat back.
my best on foot brake was 1.6 60 7.4 @ 93 i think don't remember the mph. now with the new set up i went 7.8 with 1.8 60 90 mph and my best 60 last night was on the trans brake and it was 1.78 taking off at 4 grand.
what do u guys think is going on what is holding me back i have more cubes so i thought i would go faster enlighten me
my best on foot brake was 1.6 60 7.4 @ 93 i think don't remember the mph. now with the new set up i went 7.8 with 1.8 60 90 mph and my best 60 last night was on the trans brake and it was 1.78 taking off at 4 grand.
what do u guys think is going on what is holding me back i have more cubes so i thought i would go faster enlighten me
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my combo is lq9 241 milled ported and polished heads, ms3 cam, victor jr efi, low pro elbow, stock ported tb, br7 plugs, timing retarded for 200 shot, ebay headers, tsp off road y, magna flow cat back, stock fuel pump, 3.90 gear, th400 trans, gutted car i feel like it lacking something. im going to retune just to get all my timing back and be all motor for now.
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that's what im afraid of. don't know if to change exhaust and see if it betters. i don't know why i feel like the exhaust is the one holding me back. the car at a rolling speed doesn't feel like it used to either. the pull is different like it held back the power band isn't as violent as it used to. i went fro true dual 3 in hpipe to single 3 cat back.
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i have a wide band on all the time. my tuner told me to go laying in to it. reading the wide band and the wide band is 12.5 13.0 when i hooks good. i don't think its in the tune. im going to run the car open header to see if it makes a difference. i seriously think its in the single 3'' exhaust if i see a drastic change with the exhaust. ill change out the exhaust and leave the converter. and go playing with it from there. next time out ill be spraying so i don't want to change out the converter for no reason.