Most boost with stock timing and fuel system?
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11 Second Club
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From: Indianapolis Area
Most boost with stock timing and fuel system? What is the most boost on a stock motor with stock timing and fuel curves and open exhaust? Turbo or supercharger. also what can be expected as far as power to the wheels conpared to a stock motor with 150HP of nitrous. Just tired of getting empty bottles at the track
Staging Lane
Joined: Jun 2002
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From: Palm Beach, FL
Re: Most boost with stock timing and fuel system? I ran an ati p1sc 3.2 pulley with everything stock.. 466 rwhp..
since added exhaust and other bolt ons.. for even more.. but have changed programming etc..
check site below
since added exhaust and other bolt ons.. for even more.. but have changed programming etc..
check site below
Thread Starter
11 Second Club
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Joined: Jan 2002
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From: Indianapolis Area
Re: Most boost with stock timing and fuel system? You turned out 466 on a stock motor, timing, fuel injectors, fuel pressure, and how much boost? What did you additions and tuning turn out?
Also, any turbo guys that started with the same setup first?
Also, any turbo guys that started with the same setup first?
Launching!
Joined: Dec 2001
Posts: 289
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From: Wallingford, CT
Re: Most boost with stock timing and fuel system? Boost varies on so many things, that it would be misleading for me to give a general number. On my specific setup ('98 with Incon on stock engine with SLP dual exhaust) The injectors will run out at 475 rwhp. Stock timing and programming will support this power with 94 octane, and boost will be about 6 psi. This is absolute max, and I would not run it there on a consistent basis.
Launching!
Joined: Jan 2002
Posts: 299
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From: Detroit, Murder City
Re: Most boost with stock timing and fuel system? With stock injectors and no programming, you're usually safe to about 4.5psi of intercooled boost from a turbo on a stock engine with 93 octane.
With a little less exhaust backpressure and a set of 30# injectors (again with NO PCM tuning) you can usually get away with ~6psi with 93 octane.
Obviously, you can always make more power with more safety margin with the proper PCM tuning, even at low boost levels. Keep in mind that no two cars are exactly alike and the limit will vary from car to car. Luckily the GM knock routine does a decent job of keeping people from grenading motors on most low boost applications. The best approach is to always tune correctly so that you are not relying on the knock sensors to keep you safe.
With a little less exhaust backpressure and a set of 30# injectors (again with NO PCM tuning) you can usually get away with ~6psi with 93 octane.
Obviously, you can always make more power with more safety margin with the proper PCM tuning, even at low boost levels. Keep in mind that no two cars are exactly alike and the limit will vary from car to car. Luckily the GM knock routine does a decent job of keeping people from grenading motors on most low boost applications. The best approach is to always tune correctly so that you are not relying on the knock sensors to keep you safe.
Staging Lane
Joined: Jun 2002
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From: Palm Beach, FL
Re: Most boost with stock timing and fuel system? </font><blockquote><font size="1" face="Verdana, Helvetica, sans-serif">quote:</font><hr /><font size="2" face="Verdana, Helvetica, sans-serif">Originally posted by Gold Phoenix:
<strong>You turned out 466 on a stock motor, timing, fuel injectors, fuel pressure, and how much boost? What did you additions and tuning turn out?
Also, any turbo guys that started with the same setup first?</strong></font><hr /></blockquote><font size="2" face="Verdana, Helvetica, sans-serif">I can not say stock fuel pressure as the original ATI kits came with an aux pump.. my pressure is now 63# or so with the 28# injectors that came with the 2001..
now I have bigger injectors but still have the aux pump and custom tuning.. I was part of the R&D for the PREDATOR tuner...
<strong>You turned out 466 on a stock motor, timing, fuel injectors, fuel pressure, and how much boost? What did you additions and tuning turn out?
Also, any turbo guys that started with the same setup first?</strong></font><hr /></blockquote><font size="2" face="Verdana, Helvetica, sans-serif">I can not say stock fuel pressure as the original ATI kits came with an aux pump.. my pressure is now 63# or so with the 28# injectors that came with the 2001..
now I have bigger injectors but still have the aux pump and custom tuning.. I was part of the R&D for the PREDATOR tuner...
