not holding full boost?? - Zilvia.net Forums | Nissan 240SX (Silvia) and Z (Fairlady) Car Forum

LOwrestling2001 · 02-01-2003, 05:11 PM

hi,
just finally got my 240 back s13 sr20 complete... and i have my profec B installed and what not. problem is at around 4-5 k rpms boost tapers off by like .1 bar...even w the profec B off so i'm guessing it's not the boost controller. ie (ebc off, i'll hit max boost like .5 bar or so, then around 4-5k rpms it starts to taper off a little down to .4 bar), same thing happens like if i turn the EBC on and raise boost to like .8 bar, the boost will taper off in the upper rpms to like .7 or .6 bar, wats the reason for this? i have an HKS SSQV, and i dont think it leaks boost, my guess is the actuator but i haven't had time to look at it yet, any other suggestions?

02-01-2003, 05:11 PM	#1
LOwrestling2001 Leaky Injector Join Date: Dec 2002 Location: Bay Area Posts: 114 Trader Rating: (0) Feedback Score: 0 reviews	not holding full boost?? hi, just finally got my 240 back s13 sr20 complete... and i have my profec B installed and what not. problem is at around 4-5 k rpms boost tapers off by like .1 bar...even w the profec B off so i'm guessing it's not the boost controller. ie (ebc off, i'll hit max boost like .5 bar or so, then around 4-5k rpms it starts to taper off a little down to .4 bar), same thing happens like if i turn the EBC on and raise boost to like .8 bar, the boost will taper off in the upper rpms to like .7 or .6 bar, wats the reason for this? i have an HKS SSQV, and i dont think it leaks boost, my guess is the actuator but i haven't had time to look at it yet, any other suggestions?

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