High end missfire?!?!? - Page 2

Blue Beast · 03-15-2002, 02:01 PM

No SH*T? That is truly interesting...I was wondering about that myself...I wasn't sure whether the bigger pump would increase line pressure and make the need for the 50psi completely unnecessary, but you just answered my question. That makes me feel better. I'll adjust my pressure the same way you did and see where I land ...I'll see how it works out for me, and keep you updated. Just out of curiosity what compression are you running?Mines about 10:1 maybe even 10.5:1. You don't know how helpful it has been to know someone running almost the exact same setup....or maybe you do. Have you dynoed your car yet to get performance peaks?

gtsr515 · 03-15-2002, 11:18 PM

50psi is way too much, if you upgraded injectors, then you surely dont need all that pressure, ExGMguy is right, 38-42 tops.

Hozer 88GTConv · 03-16-2002, 12:15 AM

Blue,
Going to the Dyno tomorrow. Before chip runs tomorrow and with chip sometime during the week. Had to verify A/F mixture with a voltmeter at the O2's to be sure I was ready. Will let you know...

306 BLUE GT · 03-16-2002, 01:04 PM

Finally I'm getting some real answers...I think 3 other people have told me 38-42 should be what I need...which makes me wonder about the guy that runs the dyno I'm going to. Hozer I'm interested to see what your dyno results will be... I'm getting money for an old set of ported cast iron GT40's I had... so a chip is in my near future also. Hope all goes well. Talk to you soon.

BTW...thanks to every body that replied to this post...it has been very helpful.

Kevin (aka: Blue Beast, 306 Blue GT)

03-15-2002, 02:01 PM	#21
Blue Beast Registered Member Join Date: Jul 2001 Location: New Jersey Posts: 47	No SH*T? That is truly interesting...I was wondering about that myself...I wasn't sure whether the bigger pump would increase line pressure and make the need for the 50psi completely unnecessary, but you just answered my question. That makes me feel better. I'll adjust my pressure the same way you did and see where I land ...I'll see how it works out for me, and keep you updated. Just out of curiosity what compression are you running?Mines about 10:1 maybe even 10.5:1. You don't know how helpful it has been to know someone running almost the exact same setup....or maybe you do. Have you dynoed your car yet to get performance peaks? __________________ Midnight Blue 89 GT... 306... ported and polished aluminum GT40's, MAC Long tubes, MAC power pipe, Flowmaster 2 1/2 cat back, GT40 intake with ported upper and lower, B-Cam, 24lb injectors, 77mm Mass Air, 65mm TB. World Class T5, 3.73's, Centerforce Dual Friction, FRP aluminum radiator, Victor Jr water pump, Pro 5.0 shifter, Crane adjustable FPR, 255lph fuel pump

03-15-2002, 11:18 PM	#22
gtsr515 Registered Member Join Date: Nov 2001 Location: Sunny, Hot, Sebring, Florida Posts: 725	50psi is way too much, if you upgraded injectors, then you surely dont need all that pressure, ExGMguy is right, 38-42 tops. __________________ Remember...2nd place is 1st place for losers!

03-16-2002, 12:15 AM	#23
Hozer 88GTConv Registered Member Join Date: Feb 2002 Location: Jacksonville, FL Posts: 706	Dyno... Blue, Going to the Dyno tomorrow. Before chip runs tomorrow and with chip sometime during the week. Had to verify A/F mixture with a voltmeter at the O2's to be sure I was ready. Will let you know... __________________ 1988 GT Convertible 331 10:1 TW heads, GT-40 intake, MSD, TRW flattops, B Cam w/ 1.7's, MAC exhaust, 24's, 70 TB, 76 MAF, 3.73's, Pro 5.0, Koni's, Anderson PMS, Wideband 02, yatta, yatta... One week with new motor, two speeding tickets...joy

03-16-2002, 01:04 PM	#24
306 BLUE GT Registered Member Join Date: Feb 2002 Location: New Jersey Posts: 15	Finally I'm getting some real answers...I think 3 other people have told me 38-42 should be what I need...which makes me wonder about the guy that runs the dyno I'm going to. Hozer I'm interested to see what your dyno results will be... I'm getting money for an old set of ported cast iron GT40's I had... so a chip is in my near future also. Hope all goes well. Talk to you soon. BTW...thanks to every body that replied to this post...it has been very helpful. Kevin (aka: Blue Beast, 306 Blue GT) __________________ BMF 306ci 89 GT

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