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i have a hks race wastegate 50mm with a 11psi spring trying to controll it with a greddy profec b boost controller. The problem i have is when i turn the boost controller on can't boost no more than 7psi, but when off it would go to 15psi on a 11psi spring. i have vac line frm turbo to in on...

How big are your intercooler pipes?

Using stock cams and yes they were degreed when motor was built. Jdubb give me a call i spoke with you before on a issue i had. 7708704600 Anthony. Jdubb my intercooler piping is 2 1/2 inchs.

yes the AFR's would run rich.

Thanks for comment, how would you shim the wastegate? i have a external waste gate

Hello everyone need a little help pls. I went to dyno my car yesterday and couldn't reach 400hp only 396.The car ran fine and had enough fuel.The problem was it would boost up to 18psi and at 5-6 grand the boast would rise and the horse power would drop everytime.So we chked the boost contoller...

Build sheet is(Bored 40over JE piston 8:9:1 comp.,all ARP Hardware,Eagle Rods, clevette bearings,Brain Crower valves and valve springs,head ported/polished,T67 comp turbo, big intercooler cus. 2 1/2 pipes, cus.4inch exhaust, Ebay 40mm SS Chrome waste gate,2 walboro 255lp fuel pumps -8 feed...

Do anyone no who makes a custom brakett so i can keep my a/c on my car. i'm trying to install front facing intake but want to keep a/c.

went to do some tuning today and car put dwn 426hp 396lbt at 21psi, but we could not clear the lean spot. my dip stick holder blew out and oil went every where so we stop until i fix it. its fixed now so next wk will return. jdub give me a call 7708704600.

no wideband is by its self, still have fac. O2 sensor in cir.

no not using 680 chip couldn't find one for 7m. using 550 chip. my gain is half way on the neg. side pressure and temp at 8. pressure sensor tapped in bck of intake manifold and temp sensor right before throttle in pipe. response is at 12o'clock,idle is half way on neg. side and op out knob...

aeromotive fpr,yes after increasing fuel pressure it still did the samething. i'll chk safc tomorrow.

brand new tps and fuel press. reg, purchased frm horse power freaks. safc wrks when i'm trying to adjust it okay

poodles, if i put the fuel pressure reg. bck on it will shoot fuel out the top of it and i tried two of them.

no haven't tried without safc out of the loop. do you really think it could be the safc. i'm using aem wideband

already pulled efi fuse.

grounded to the engine, to the stud right by the throttle.

jdubb, i've chg ecu too, still have same problem. yes stock fp is gone. when i'm barely on the gas when i reach that certain rpm its okay, nut if i'm about 5% of the throttle depressed it does it. tryed to add fuel doesn't clear up.

jdubb i needed a responce man.

jdub, hey man turned the fuel pressure up to 35psi and that didn't wrk. chg tps that didn't wrk either. man i don't know whats going on it run fine before and after 2600-2700 rpm's. car runs strong until and after that point adjusted timing it was off a little. still not fix.