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Re: 383 TBI buildup, lots of pics!
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Originally Posted by ImpalaGuy
I continued to backed out the set screw and measuring the fuel pressure, until it fell out. It's down to 17psi which is as low as it can go. That will probably work, but I'm not terribly impressed with the xtreme-fi AFPR.
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You can use the stock spring in the Xtreme-fi unit as well. Mine was perfectly adjustable from 8-30 PSI with the spring supplied. The stronger silver spring worked from 15-45 PSI.
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Originally Posted by ImpalaGuy
So right now Brian sends me a new tune or two every day, and I capture datamaster logs and send them back to him. The $200 for his experience was well worth it. I still haven't tried another wide-open-throttle run. We need to get part throttle closer first. I do expect to pull a WOT blast in the next day or so. I'll keep you guys posted.
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LOL, I have been helping Kurt (OldRed95) for free. Nothing real special there. Just make sure you have enough fuel to cover peak demand and pull fuel at part throttle via BLMs.
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1983 G20 Conversion Van, 383 TPI, 10.5:1 compression, Custom Reed Roller cam, Ported 906 Vortecs, Doug Thorley Tri-Y headers, dual 2 1/2" exhaust, 4L60E, 3.08 gears. 7427 PCM in MPFI Mode
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