Fast 102 untuned
Car is H/C tuned with stock 28.8 lb injectors. I am about to do the ls6 valley cover mod and was just going to put the ls6 intake back on and have tuner install the FAST w/42lb injectors. Makes better since to install the FAST w/stock injectors and just swap out to the 42 for the re-tune.
Thx!
I moved from a 78mm throttle body to a 90mm throttle body on my LS6. My out of town tuner told me it would be no problem and it was not. The driveabilty was essentially unaffected and a check of the full throttle air-to-fuel checked okay at a local dyno facility.
Later, also between tunes, I upgraded to a FAST 102 intake albeit with the same 90mm throttle body and the car was still pretty well behaved until I finally got to my tuner for a retune.
And, as you said, do not install differenti injectors until your tuner is present.
.
Jon
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