So I do full non-sequential conversion.. still have my problem.
#1
Rotary Enthusiast
Thread Starter
So I do full non-sequential conversion.. still have my problem.
Hey everyone,
A little background can be found here
https://www.rx7club.com/3rd-generation-specific-1993-2002-16/questions-about-going-non-sequential-342481/
So now, I've done the FULL non-sequential conversion MINUS the internal turbo work. For now, the TCA flapper is wired open.
MY boost pattern now is 8, slowely creeps to maybe 9-9.5 by redline in third with boost set to reach 12 psi.
Basically, since I have so little vacuum lines left, I ruled out a leak as a possible solution.
What Im thinking, which is what I'd like some feedback on, is I think my problem actually just originated from old, tired turbos. I have 93k miles on my turbos, and with my new Tial BOV which causes minor compressor surge, I think they just bit the dust.
Thats really the only thing I could think of that would be my boost problem.
Anyone have any other solutions?
Thanks alot,
Steve
A little background can be found here
https://www.rx7club.com/3rd-generation-specific-1993-2002-16/questions-about-going-non-sequential-342481/
So now, I've done the FULL non-sequential conversion MINUS the internal turbo work. For now, the TCA flapper is wired open.
MY boost pattern now is 8, slowely creeps to maybe 9-9.5 by redline in third with boost set to reach 12 psi.
Basically, since I have so little vacuum lines left, I ruled out a leak as a possible solution.
What Im thinking, which is what I'd like some feedback on, is I think my problem actually just originated from old, tired turbos. I have 93k miles on my turbos, and with my new Tial BOV which causes minor compressor surge, I think they just bit the dust.
Thats really the only thing I could think of that would be my boost problem.
Anyone have any other solutions?
Thanks alot,
Steve
#2
Need more sleep
iTrader: (1)
If you ever took off your turbos did your wastegate flapper fully cover the wastegate opening or were there large cracks allowing exhaust to bypass? You may simply be bypassing too much exhaust. I found my wg flapper had moved on the shaft and needed adjustment to center up with the wg hole.
Other idea (if your wg was internally ok) is to wire your wg closed and carefully do a pull while watching your boost ... get outta the throttle before it blows. If your boost is going higher than before and above your desired setpoint you have a wg actuator or boost control issue.
Other idea (if your wg was internally ok) is to wire your wg closed and carefully do a pull while watching your boost ... get outta the throttle before it blows. If your boost is going higher than before and above your desired setpoint you have a wg actuator or boost control issue.
#3
Rotary Enthusiast
Thread Starter
well, it all happened in an instant, one run I had 12-10-12, the nex trun I had 8-6-8... I know it really wouldnt matter how much m,y wastegate opened, for with it fully opened it USED to creep to 12ish psi.
#5
I'm a CF and poop smith
Originally Posted by Rx-7$4$me
with my new Tial BOV which causes minor compressor surge, I think they just bit the dust.
#7
Rotary Enthusiast
Thread Starter
Originally Posted by skunks
how is your tial bov causing compressor surges? is it not opening under vaccum?
I dont have any cats on my car.
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#8
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Join Date: Aug 2002
Location: United Kingdom
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Originally Posted by kwiktsi
Do you have a cat on your car? A partially plugged cat will cause a lack of high boost.
Joe
Joe
Yup, I had this problem on my car. Boost builds very slowly and sometimes not at all. Eventually it blocked completely and the car wouldn't accelerate supprisingly!
I fixed this with a midpipe Boost heaven again!
#11
RX-7 Bad Ass
iTrader: (55)
Yeah, I'd guess boost leak. The only way to properly find one is to pressure test the system with an air compressor or portable air tank.
Dale
Dale
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