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

how to run 18lbs of boost

Old Nov 8, 2003 | 01:11 PM
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how to run 18lbs of boost

could anyone tell me how could i run 14-18lbs of boost without running to lean? How much fuel pressure would i need in order to run that much boost? And does anyone have a front mount intercooler for a 89 turbo 2? and a full 3in exhuast system?
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Old Nov 8, 2003 | 01:39 PM
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i run 14-16 #'s with FMIC and Racing Beat 3' exhaust but they are not available.
i have upgraded fuel pump but stock injectors.
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Old Nov 8, 2003 | 01:55 PM
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14 -- you're borderline in the unsafe zone with the stock turbo.
18 -- look into an upgraded turbo, fmic, four 720cc's, walbro, fpr
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Old Nov 8, 2003 | 02:09 PM
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Stock injectors? You put it on a dyno?
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Old Nov 8, 2003 | 04:33 PM
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Re: how to run 18lbs of boost

Originally posted by luisitoturbo2
could anyone tell me how could i run 14-18lbs of boost without running to lean? How much fuel pressure would i need in order to run that much boost? And does anyone have a front mount intercooler for a 89 turbo 2? and a full 3in exhuast system?
Its not the fuel pressure, I'd be worried if you'll be having ENOUGH fuel. Why 14-18lbs of boost? The stock turbo gets very inefficient at higher boost. It won't make more power, just heat.

For starters, you'll need a fuel pump. Maybe new injectors and an SAFC or another fuel controller helps depending how much boost you want to run.
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Old Nov 8, 2003 | 09:09 PM
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get a better turbo, and injectors, and fuel pump, exhaust
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Old Nov 8, 2003 | 11:45 PM
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This guy thinks he ran 12s in the 1/4. He doesnt know how to mod his car. He told me he has blown several engines.

Get rid of the stock ecu already
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Old Nov 9, 2003 | 03:02 AM
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Something I learned a long time ago about people who want to run lots of boost it that they generally only want this for bragging rights.

Boost does not correlate to power. 18psi on a stock turbo will result in less power than a well-sorted T04 or similar on 10psi, plus it'll probably be dead in a week.

You don't modifiy an engine with a boost target in mind. You start with a power target and find a turbo that'll make that power using the least boost possible and still be suitable for the driving you do.
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Old Nov 9, 2003 | 12:35 PM
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Originally posted by NZConvertible
plus it'll probably be dead in a week.


True story. I have the pics to prove it.
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Old Nov 9, 2003 | 12:38 PM
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For anyone that doubts it

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Old Nov 9, 2003 | 12:45 PM
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jeez`
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Old Nov 9, 2003 | 12:55 PM
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Re: how to run 18lbs of boost

Originally posted by luisitoturbo2
could anyone tell me how could i run 14-18lbs of boost without running to lean? How much fuel pressure would i need in order to run that much boost? And does anyone have a front mount intercooler for a 89 turbo 2? and a full 3in exhuast system?
Why are you wanting to run this much boost?

B
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