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Camaro V8 LS3 / L99 Engine, Exhaust, and Bolt-Ons Bolt-Ons | Intakes | Exhaust

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Old 05-21-2013, 09:27 AM   #1
Yumacamaro
 
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throttle body porting

a week ago a friend had his TB ported by a professional. he has had a check engine light on and off since... now he says its sputtering and popping.. the strange thing is that others had their cars done also without any issues.that same day. the guy did a total of eight and the one with the problems was first. his is a 6cld but so were 5 others... any thoughts? also now that i remember it he installed a cold air intake from specter.... the box didnt differentiate that it was for a 6 or 8 cld car..
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Old 05-21-2013, 09:39 AM   #2
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It sounds as though it will need a tune.
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Old 05-21-2013, 10:12 AM   #3
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You shouldn't need a tune if all u have is a ported TB and a cold air intake! Maybe his TB electronics went bad and that is what is causing that. He should also check if his TB was installed correctly! I have a lot more mods than just a ported TB and a CAI and still don't know what a check engine light looks like as it has never popped up on my dash as of yet. knock on wood!!!
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Old 05-21-2013, 10:21 AM   #4
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whats the code? Autozone or Advanced Auto should be able to read the code and tell him what it is. Id start there.
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Old 05-21-2013, 10:27 AM   #5
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vacuum leak or he ruined the TB most likely, read the code.
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Old 05-21-2013, 11:39 AM   #6
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Might wanna check if his MAF sensor is weak.

http://www.camaro5.com/forums/showthread.php?t=291436
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Last edited by BubbaSS; 05-21-2013 at 12:00 PM. Reason: added link on how to check MAF sensor
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Old 05-21-2013, 01:38 PM   #7
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Quote:
Originally Posted by BubbaSS View Post
Might wanna check if his MAF sensor is weak.

http://www.camaro5.com/forums/showthread.php?t=291436
+1 That too!
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Old 05-21-2013, 02:10 PM   #8
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And this is why you stick to a VMax ported TB. They are CNC ported. Humans can make a mistake....computer rarely does.
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Old 05-21-2013, 05:24 PM   #9
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Vacuum leak or weak maf sensor or over ported is the first thing I would expect.
I put one on a 2006 gto for a guy once and I pinched the o ring and it drove fine overall but had a couple of issues here and there similar to what you posted.
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Old 05-21-2013, 06:25 PM   #10
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Quote:
Originally Posted by caverman View Post
And this is why you stick to a VMax ported TB. They are CNC ported. Humans can make a mistake....computer rarely does.
Quote:
Originally Posted by Bo White View Post
Vacuum leak or weak maf sensor or over ported is the first thing I would expect.
I put one on a 2006 gto for a guy once and I pinched the o ring and it drove fine overall but had a couple of issues here and there similar to what you posted.

Good advice right there. Vry few "professional porters" can get it right by hand porting.

Bo knows. He gets it right.

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