new injectors and mass air but less power?

[TEXSN95]

Originally posted by 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.

Wow you gained 35 hp from that?? My stock regulator is at 38 w/out vac, but I keep getting an 02 lean code, but "only" when I'm cruising at 70+mph in 5th for awhile. No other time whatsoever. And that started after I put on my homeade cold air. My stock 70mm MAF is also postless, which would further lean it out a bit. I do need an adjustable FPR, and my timing is 14. I'm weary of bumping it more when it's doing what it is right now. Did you have yours dynoed? If so then I should have a bit more than that, and I know it has more than a 104.7 with my current combo.

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Clint L.
White 95 Cobra #3637
58cc GT40X heads with mild porting, Crane 2031 cam, FRPP 65 TB, 1.7s, Cobra intake, homeade cold air, 155lph, pullies, Tokico Illuminas, C springs, GW lower control arms, Steeda CC plates, aluminum driveshaft, Steeda quadrant, MSD6A, Mac shorties, off road hpipe, 2 1/2 ultra flows w/ dumps, R hood, Euro clear corners, stock 3.08s
13.61 @ 104.7 w/ 2.22