Matts94Z28

iTrader: (6)

You need to spin it higher and i'm sure that the LT's made it run a little rich. Lean is power, get it tuned again...

blk97z28

iTrader: (3)

Just with headers and y-pipe with turndown I put 266 through an AUTO so you should be doing more, get it dynotuned.

davidv

i think you need a good dyno tune for the longtubes.

96silverram

iTrader: (12)

Your torque numbers are not too bad, but the HP is definitely down. I'm going to agree that you will need to turn the CC306 in 6500/6700 neighborhood if you want to make the numbers. You should be dyno-tuning the car with a cam that big on stock heads. I don't think your going to get what you want out of a mail order tune.

VendettaV6

iTrader: (8)

those numbers are baaaad

ABA383

iTrader: (1)

I would put it back on the dyno and spin it to 6500...use the dyno's wide band and check the a/f ratio to see if you are around 12.8:1 which is a good safe ratio for n/a...Pcmforless should have gotten you close...See what your results are...I agre not to throw any parts at it yet...and what type of dyno is it? Mustangs typically read lower than Dynojets and remember that if everything is right with the tune, then the dyno numbers are just numbers...Dynos are good tuning tools, but are not the gospel...Some dynos are less "happy" than others...I only make 375 rwhp, and was poo-pooed on here when I posted them...My sig track numbers would suggest otherwise...

--Alan

Razor_Blade

iTrader: (8)

I agree with ABA383, some of the best running cars don't dyno well. Dyno mumbers only impress key board racers anyway. Take it to the track and see how it does.

wannabess

What was who's mods? Mine? HMM let me see a golen forged 383 and LE2 package with Bret's cam, just like tuning a bolt on car, guess any idiot can do it from 1500 miles away /sarcasm. Like I said maybe YOU just dont know the right people