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Tech Talk Technical Discussion About The Nissan 240SX and Nissan Z Cars


 
 
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Old 02-17-2008, 01:06 PM   #1
((sr)) kelly
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if my 240sx had a face... id break its nose HELP!

my car ran FINE before i got it tuned.. and after we got the AFRs pretty much dialed in, i went to up the boost with my HKS EVC6 boost controller... it was set at 16.6, and i bumped it up to 18 psi...


i made the pull, and the boost wouldnt go past 15 psi = 330 whp


then i bumped it to 20 psi, and the boost wouldnt go past 12 psi = 290 whp




so i unplugged my WG to see if it was the diaphram... and everything was fine..


so i thought surely me vacc source for the EBC was crappy ( located on the hot pipe) so i tied it into the source coming off the throttle body...


that seemed to do the trick...


so i made 1 good 3rd gear pull, and my engine started like hesitating, and i looked down and it was over boosting ( was set at 18 psi, and hit 22 psi)


then i let off.. and my turbo wont go into vaccume... have the electric guage and a manual guage for boost... both are reading like 1 psi of vaccum.. and my turbo wont spool fast... so wtf could that be?


has a HKS actuator kit, Garrett Gt2871R .86 that has about 4k miles on it



i unplugged the WG, and it still stays at 1 psi of vaccume
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