new injectors and mass air but less power?

[withamc]

I'm also running the 24# injectors. When I took it in to be tuned my fuel pressure regulator was set to 39 PSI (no vacuum). The tuner pulled it back to about 35 PSI and bumped the timing to 16* and I got another 35 HP. I'm about 320 at the flywheel, you're probably less than that so you need to pull yours down even further - maybe 32? Check the analyzer on this site, plug in your numbers and you'll get an idea where to set it.

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86 GT, GT40P heads, Crane 2031, 1.7 RR's, Cobra intake, 65mm TB, 73mm Vortech, 24# injectors, MAC GT40P headers, 2-1/2" BBK H-pipe (w/cats), Flowmasters, 3.55s, Groundpounder subs and lower control arms, 277 RWHP.
THIS JUST IN!! All the good stuff is going in the new red 93 GT - no more rattles!