powerlost in 1st gear only no boost procharger
09-29-2007, 06:26 PM
#11
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Join Date: Feb 2007
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RE: powerlost in 1st gear only no boost procharger
00 rpm = a given supercharger speed. It sure is spooling up normally (it doesnt have any other option, unless major belt slip), it just cant build any boost before you are shifting into 2nd. I have a feeling that if you reduced your final drive again, you would have boost in 1st gear.
ORIGINAL: CataclysmGT
Ummm, no matter what gear......6000 rpm = a given supercharger speed. It sure is spooling up normally (it doesnt have any other option, unless major belt slip), it just cant build any boost before you are shifting into 2nd. I have a feeling that if you reduced your final drive again, you would have boost in 1st gear.
Ummm, no matter what gear......6000 rpm = a given supercharger speed. It sure is spooling up normally (it doesnt have any other option, unless major belt slip), it just cant build any boost before you are shifting into 2nd. I have a feeling that if you reduced your final drive again, you would have boost in 1st gear.
I think you are misunderstanding me. I meant that I think the reason why he's missing boost is because he is ripping through the gears so fast that the supercharger barely has time to spool up.
Starting at a very low rpm with full throttle would allow the supercharger enough time to get moving and would be useful to diagnose the problem
09-29-2007, 08:20 PM
#15
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RE: powerlost in 1st gear only no boost procharger
first gear is not fast at all it like slows down at 4 rpms. Do you think i should put back the 355 to see if everything works ? Tomorrow I'm going to record it on dvd. My battery was dead today. This will help for everyone tounderstand whats happen.Thanks
09-29-2007, 11:18 PM
#17
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RE: powerlost in 1st gear only no boost procharger
you think possibly that the belt is slipping and thats why your not getting the boost? I had a procharger on my 01 and i had 4.10 gears in it and i seen 13psi at 6500 rpms shifting to second. But it depended how i did it though, if i was rolling i would not see full boost but from a stop i did. But If the belt is slipping and trying to grab but it cant because how fast 1st gear is winding out.
09-30-2007, 12:02 AM
#18
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RE: powerlost in 1st gear only no boost procharger
ORIGINAL: 06supercharged
Need some help installed 6 speed and 430 gears now the procharger doesnt build boost in first gear every once in awhile it will . I ve taken it to a shop and said it was the throttle body( Replaced not that) They check computer said it was fine? The car ran 11.60s now 12.40s Need help spent $300 still not fixed Could it be the gear?
Need some help installed 6 speed and 430 gears now the procharger doesnt build boost in first gear every once in awhile it will . I ve taken it to a shop and said it was the throttle body( Replaced not that) They check computer said it was fine? The car ran 11.60s now 12.40s Need help spent $300 still not fixed Could it be the gear?
10-03-2007, 04:15 AM
#19
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RE: powerlost in 1st gear only no boost procharger
So any improvement?....sounds like belt slippage to me! Since the car is dynoed in fourth gear it probably wont show on the dyno. A boost gauge will tell you if the psi goes way past what the pulley is rated for hence belt slippage. JMO
10-03-2007, 07:23 AM
#20
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RE: powerlost in 1st gear only no boost procharger
Thanks for your help Its not the belt that was the first thing i checked. The computer is going to fail mode in first only, no wot? The car worked fine untill the trans and gears went in. Do you think that the 430 is to much for this trans? the car does run better with the 20s on. I do have a boost g and it shows no boost in first,once i shift to second its right on it.First feels like a total stock car I cant explain and just cannot seem to figure it out.I tried to get my camera to film it but can't get it to down load.any help you can give me thanks