Throttle Body Poll
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Joined: Jul 2003
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From: http://www.mphparts.com 800-364-1975
Throttle Body Poll
I bought a cheap, used 2002 LS1 throttle body off eBay the other day (mostly because I have had long standing idling issues and a few other things I thought MIGHT be throttle body related). My original TB was drilled and polished/ported all of which I know can affect drivability.
When I did a quick visual compare of the two TBs, I could see that the porting and polishing done to my original TB was significant.
So, I'm curious, what TB are you guys running? I wonder how much power I'll lose, if any, by going back to a completely factory LS1 throttle body?
(btw, I added LS1 and LS6 TBs separately because I'm not sure if the LS6 uses the same TB as the LS1).
If you pick "other", please specify it here.
When I did a quick visual compare of the two TBs, I could see that the porting and polishing done to my original TB was significant.
So, I'm curious, what TB are you guys running? I wonder how much power I'll lose, if any, by going back to a completely factory LS1 throttle body?
(btw, I added LS1 and LS6 TBs separately because I'm not sure if the LS6 uses the same TB as the LS1).
If you pick "other", please specify it here.
Melting Slicks
Joined: Apr 2005
Posts: 3,418
Likes: 1
From: Chicagoland Area IL
I know that if idle is a problem that some people install a setscrew to keep throttle blade more open (larger angle). PCM has to relearn new closed position and after that it’s no problem. Also setscrew method allows for some adjustment whereas drilling is more permanent.
I have spare 03 Z TB and it’s the same as my 04 LS1.
Mike
I have spare 03 Z TB and it’s the same as my 04 LS1.
Mike
Le Mans Master
Joined: Jan 2001
Posts: 8,238
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From: Lakeland, Center of Florida Fl
Originally Posted by 1 Nasty Z
LS1 and LS6 TB is one in the same. Also Drilling the hole is not required for big cam cars. With a correct tune the compensation can be made. All depends on the tuner.
My idle is 900 and its awesome.
Jon
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Joined: Jul 2003
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From: http://www.mphparts.com 800-364-1975
Originally Posted by 1 Nasty Z
LS1 and LS6 TB is one in the same. Also Drilling the hole is not required for big cam cars. With a correct tune the compensation can be made. All depends on the tuner.
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From: http://www.mphparts.com 800-364-1975
Originally Posted by mdhmi
How would your describe your idling issue?
I also get some surging when in gear at low RPM.
These issues got 80% better when I changed my MAF and VE tables to stock Z06 settings, adjusted IFR, then made a few tweaks elsewhere, but I think there's still some drivability that can be eeked out of returning the TB to stock.
that is pretty damn exotic and it appears that it will certainly move some air--can't wait to see a clip of that car rolling---congrads bill
