Car has more power?
#1
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Car: 89 GTA
Engine: L98
Car has more power?
I have an 89 gta with a 350 and for the first 10 mins. i'm driving it, it has a ton of power spins wheels effortless and squaks tires from 1st to 2nd.Then when it warms up the car seems to lose the power.Any suggestions?
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Car: 89 5.7 IROC/95 LT1 Corvette
Engine: All 5.7's
Transmission: 700R4 (Roessler)/ZF6
Axle/Gears: 10 bolt Zexel 3.23's. CTW 17" wheel
Re: Car has more power?
Sounds like your losing power when the EGR opens. Some people say they disconnect the EGR for more power. Just a thought.
#3
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Car: 1991 Z28 1LE
Engine: 370CID GenIII
Transmission: 4l60e
Axle/Gears: 4.33 Moser 9inch
Re: Car has more power?
Ummm no...EGR valve might be sticking open is so fix it dont remove it....egr removal gains NO HORESPOWER if it was functioning properly....EGR only functions at steady cruise as soon as u punch it, it stops so it like all other emissions devices dont really hinder performance....now what exactly is ur problem? im not sure...u only "feel" a difference in power doesnt mean there actually is....
#4
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Car: 89 GTA
Engine: L98
Re: Car has more power?
There is no problem .Just wondering why? Its apretty noticeable difference even my old lady said it didn;t pull as hard when i punched at a light 10 mins later.
#5
Re: Car has more power?
I think this is normal. A cooler engine will perform better, but not better for the engine. I find the same with my car.
#6
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Car: 1991 Z28 1LE
Engine: 370CID GenIII
Transmission: 4l60e
Axle/Gears: 4.33 Moser 9inch
Re: Car has more power?
well heat is the enemy of power to a point....once everything gets good and heat soaked you are gonna naturally lose some power
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#8
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Re: Car has more power?
Originally Posted by Gutz
I have an 89 gta with a 350 and for the first 10 mins. i'm driving it, it has a ton of power spins wheels effortless and squaks tires from 1st to 2nd. Then when it warms up the car seems to lose the power.Any suggestions?
#9
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Car: 87 Trans Am
Engine: V8 305 TPI
Re: Car has more power?
.... I don't know about it being literally ten minutes, but, your engine is running much richer with an open circuit. When the loop is closed, the air fuel ratio isn't as rich, nor is it really ideal from a performance perspective, mainly from a emissions. Try bumping up the fuel pressure some. If that doesn't work, is it possible hot air is making it's way into the air inlet, meaning, are you running one of those oxymoron cold air intakes, where the filter is right next to the engine?
#10
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Re: Car has more power?
Originally Posted by kwp289
im sorry but im a novice, how do you increase the fuel pressure? thanks
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Car: 87 Trans Am
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Car: 87 GTA
Engine: 385 sbc
Transmission: 700r4
Axle/Gears: 2.73 posi
Re: Car has more power?
switch your fan switch to turn on at cooler temps... 200 or 176... 225 is hot enough to kill performance and engine life.
Last edited by wanab03ss; 07-20-2008 at 07:55 AM.
#16
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Car: Camaro IROC-Z 89
Engine: 28xxx miles
Transmission: TH700
Axle/Gears: 2.77 BW
Re: Car has more power?
Ive noticed the same , when cold its roaring like a beast but as soon as it gets warm , no more beast..:-( When i scan with datamaster I can see that there is some knock retard at wot , and my guess is thats whats causing the bad performance. not sure if the knocking is false or true , hard to tell. When engine is cold and in open loop the ecm isnt monitoring knocks , correct?
And engine is on basetiming , maybe this is whats causing the differences in performance hot-cold?
And engine is on basetiming , maybe this is whats causing the differences in performance hot-cold?
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Car: 88 GTA "Cocaine"
Engine: 350 tpi
Transmission: 700r4
Axle/Gears: 3.27
Re: Car has more power?
I know the 700r4 gets hot and gets sluggish
if you dont have one already get a trans cooler
if you dont have one already get a trans cooler
#19
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Car: 85 335IROC Camaro
Engine: 335 tune port
Transmission: 700r4 Stage 2
Axle/Gears: 3:73
Re: Car has more power?
Ummm no...EGR valve might be sticking open is so fix it dont remove it....egr removal gains NO HORESPOWER if it was functioning properly....EGR only functions at steady cruise as soon as u punch it, it stops so it like all other emissions devices dont really hinder performance....now what exactly is ur problem? im not sure...u only "feel" a difference in power doesnt mean there actually is....
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