2nd Generation Specific (1986-1992) 1986-1992 Discussion including performance modifications and technical support sections.

need put boost controller

Old May 6, 2003 | 07:00 PM
  #1  
e20v02o's Avatar
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From: san jose
need put boost controller

i just got a 90 rx7 turbo 2 and i want to know how much i can boost with stock apex seal..and the car has 140000miles now...
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Old May 6, 2003 | 07:06 PM
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From: Currently residing in St Charles, MO
Has the motor been replaced? The stock seal will hold alot of boost, more than you'll probably ever see, but it doesent matter if you dont have fuel and a cooler intake charge.

My opinion is a max of 10psi on the stock IC and injectors.
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Old May 6, 2003 | 07:33 PM
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From: san jose
woow 3Q for help
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Old May 6, 2003 | 08:38 PM
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From: Hood River oregon
Yeah, I am running 10PSI on stock injectors. Things are starting to get lean.

Jarrett
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Old May 6, 2003 | 08:48 PM
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From: Currently residing in St Charles, MO
Do you have any kind of fuel management J-Rat?

Im just wondering if the stock computer is whats leaning it out, or if the injectors are maxing out? I didnt see a S-AFC in you sig or anything like it.
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Old May 6, 2003 | 08:51 PM
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Originally posted by TonyTurboII
Do you have any kind of fuel management J-Rat?

Im just wondering if the stock computer is whats leaning it out, or if the injectors are maxing out? I didnt see a S-AFC in you sig or anything like it.
No fuel management, just a boost controller, Walbro, and a burning desire to buy a new motor soon....

Leaning the mix is probably the FCD, which I never adjusted, and the fact that I creep to 11, sometimes 12 PSI. Gonna be pulling that motor any day now.

Jarrett

Last edited by J-Rat; May 6, 2003 at 08:54 PM.
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Old May 6, 2003 | 09:51 PM
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From: Melbourne Australia
many of the aussie guys are running 14PSI with hi-flowed turbo's using the stock I/c and injectors.. but this is with a stand alone ECU.
this is really borderline though. I'm going to get some bigger secondary injectors.. either 12aT ones 850cc or some aftermarket 1000cc ones for my setup.

With a std ECU and stock everything I wouldn't even consider boosting it much at all.. heaps of people do, but I cant afford a rebuild
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