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View Full Version : 2004 truck cos3 help !



Trevor81
March 10th, 2011, 01:55 AM
Hi all I have a 5.3 with a front mount t-3 t-4 turbo 38mm wastgate 30mm blowoff 3" exhaust , boost ref fpr , ls6 cam and springs. it runs good but hits a wall at 5000 and takes for ever to get to 5800 . any ideas ???

nevinsb
March 11th, 2011, 08:55 PM
Do you have a wide band installed? How much knock retard is there while you are driving?

joecar
March 12th, 2011, 10:49 AM
Check exhaust for blockage.

Trevor81
March 14th, 2011, 12:57 AM
I have an lc-1 . it says 12.25 ish no knock exhaust open . timing at 15~16 ? made it fatter to 11.8 ish still no knock timing at 14 ~15 ??? thanks for the help ? this is a truck so what is the intake good to ??

Trevor81
March 14th, 2011, 03:00 AM
1012210123


this was on the way to work today .