Series 1 Swap In a Fiero - Series 1 potential - Page 5 - GM Forum - Buick, Cadillac, Chev, Olds, GMC & Pontiac chat


Performance, Brainstorming & Tuning Talk about modifications, or anything else associated with performance enhancements. Have a new idea for performance/reliability? Post it here. No idea is stupid! (please use Detailing and Appearance for cosmetic ideas)

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Old 11-25-2005, 11:56 AM   #41
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Same thing that happens to a car running nitrous when they go lean. BOOM

If you run lean under high boost, you will almost certainly go boom in a bad non-rebuildable way.
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Old 11-25-2005, 11:59 AM   #42
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thats what i said and every one points to this http://www.fastfieros.com/tech/boost...pass_mod.htmas their argument and say "well mines been off for a year no problems" how could that be?
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Old 11-25-2005, 12:03 PM   #43
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Give it time. One will, then they'll all change their tune.

WHEN, not IF they run lean under high boost or hit their fuel cutoff in the PCM, there will be a boom.

Imagine losing a fuel pump or simply a fuse.......
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Old 11-25-2005, 12:08 PM   #44
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http://www.fastfieros.com/tech/boost...bypass_mod.htm
this is the link that should work.

so in essence it'* a safty valve rather then a reguleter of psi
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Old 11-25-2005, 12:13 PM   #45
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Quote:
Originally Posted by markviiisvt4

so in essence it'* a safty valve rather then a reguleter of psi
The boost bypass valve bypass boost when you don't need it. Like when the TPS reads low. As in your foot isn't on the loud pedal. When you're cruising, you're using boost, but when you let off for a granny in front of you it dumps boost. This saves FUEL.

It'* also a safety.

The valve itself doesn't REGULATE your boost PSI. It'* like an on-off switch really. When you roll onto the throttle firmly, your boost goes up because the engine rpms (and SC rpm'*) are increasing.
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Old 11-25-2005, 12:21 PM   #46
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ahhhh that makes sense now
so our super chargers or only capable of so much boost, and the bypas valves alows the computer the ability to control its use not it'* volume ergo increasing fuel economy and alowing a margin of error for part failure since our cars don't have map signal. so in therory it should be ok to do on a stock car and if you don't mind living on the edge lol
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Old 11-25-2005, 01:22 PM   #47
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You got it. Our stock PCM'* have a fuel cutoff at a particular RPM. The boost must be able to dump before that point.

If you bypass the actuator, you MUST delete the fuel cutoff in the PCM, and you WILL get worse fuel mileage.

Keep in mind the Fiero won't be as bad because they're so light.
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Old 11-25-2005, 02:57 PM   #48
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thanks will for all the info now to de hijack the thread lol
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Old 01-03-2013, 01:14 PM   #49
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Just joined site tried to find willgen or the seriesoneperforance site no luck have a done up series one 3.8 in a fiero fast little ride looking for other mods always . Any more info on series ones would be great cool site thanks
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Old 01-03-2013, 01:26 PM   #50
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we would prefer if you would start a new thread with your questions, those guys are long gone.
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