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04-26-2007, 05:57 PM
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3800 Senior Member
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Bryan Volles
Location: Raleigh, NC
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Please Help!!!!!!!!
Hi everyone its been a while since i been on here and have done some major work to my 2000 Monte Carlo SS, I have installed a intense S1x blower cam, comp cam 105# valve springs, and comp cam roller lifters. I have a SLP powerflow cat back, auto lite 103's 180* tstat and taylor 8mm wires. Heres my problem I just installed the cam and everything got a reprogrammed pcm from instense options on that are PCM standard,Stock idle speed, timing table adjusted 3* at WOT, disable misfire DTC,disable rear o2 and cooling fan set at 180*. My problem is that the car seems to have absolutly no power it acts like the tranny is slipping but its not it just hesitates a ton and has loss a ton of power it seems anyway. I got the crankshaft variation relearn today and the engine doesnt seem to be stumbling over itself before i got that done ANY IDEAS?
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04-26-2007, 09:05 PM
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Michael J. Bedrin
2001 Nissan Altima GXE
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With the power loss and tranny-slipping feeling, it could be the catalytic converter. Do you have a way to scan the car?
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04-26-2007, 09:49 PM
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3800 Senior Member
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Bryan Volles
Location: Raleigh, NC
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I had it scaned when I did the crank sensro relearn at the dealership and that was the onyl code. I have a new DP and U bend deltete waiting to be installed. Do you think that a cat with 100k on it could be restrictive enouhg to make it feel doggy? thanx for reply...
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04-27-2007, 12:17 AM
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Matt Wamboldt
Location: Racine, WI
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Its probably the cat convertor.
Had the same problem on my gp. Car would go way up in rpm, yet not shift gears. It wont show up on a scanner, you just have to check the cat yourself.
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04-27-2007, 01:39 AM
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Marshall Edwards
Location: Atlanta
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time to go high flow baby
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04-27-2007, 09:24 AM
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Todd Allen
00 Bonneville SSEi
Location: Westerville, OH
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Bryan I emailed you about this earlier yesterday.
Anytime you do a cam in an N/A car you should also do a higher stall torque converter. The power band is shifted upwards with the cam so your low end feels like you have lost some oomph. A higher stall converter will flash quicker to the cams powerband and make the car feel completely different.
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04-27-2007, 09:34 AM
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3800 Senior Member
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Bryan Volles
Location: Raleigh, NC
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Yea i got that email thank you for ur reply, well i will start with the cat and stuff i really dont want to pull the motor again to do the torque converter
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04-27-2007, 10:59 AM
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Billy Meek
Bermuda Blue 05 GTP Comp G
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Yes, If your looking for the low end power right off the line, the cam would have changed that considerably. The power curve is in a higher rpm range and the torque converter is the fix. If you suspect the cat is constricted its easy enough to unbolt at the manifold and see if it makes a difference or go ahead and replace it.
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04-28-2007, 07:03 PM
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3800 Senior Member
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Bryan Volles
Location: Raleigh, NC
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Ok i understand all that, here is what I dont get and please bare with me as i am trying to grasp all this, if the power band changed how come then as i get up into the power band of the cam say around 4500 or so the car still doesnt go anywhere? I was coming up a small incline home from work yesturday and got so mad i barried the throttle goin about 70mph got to the top of the hill and i was doin 55mph at about 5000 rpms? I just dont understand how a torque converter would change anything, and again please bare with me 
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