FAST 90 intake & TB
Thread Starter
Instructor
Joined: Dec 2002
Posts: 183
Likes: 0
From: Shelby Twp MI
FAST 90 intake & TB
Changing heads. Going with ET Performance 5.3's w/2.055 int and 1.575 ext. Thinking of going with the FAST 90 and Throttle Body. I've been told that the FAST TB has or is problematic. Been told to go with LPE or TPIS for the TB. Any responses are appreciated!
Thanks,
KJ
Thanks,
KJ
Drifting
Joined: Sep 2002
Posts: 1,947
Likes: 0
From: Howell MI.
Originally Posted by UAWDES1
Changing heads. Going with ET Performance 5.3's w/2.055 int and 1.575 ext. Thinking of going with the FAST 90 and Throttle Body. I've been told that the FAST TB has or is problematic. Been told to go with LPE or TPIS for the TB. Any responses are appreciated!
Thanks,
KJ
Thanks,
KJ
Nick Williams
E-mail Address(es):
nickw_61@yahoo.com
Race Director
Joined: May 2003
Posts: 19,105
Likes: 2
From: Paducah KY
Cruise-In VII Veteran
Nick Williams has a new improved version out now that doesn't have the issues some of the earlier ones had.
LG Motorsports sells them. Here's the link: http://www.lgmotorsports.com/shop/pr...fa86e9441cc5a6
LG Motorsports sells them. Here's the link: http://www.lgmotorsports.com/shop/pr...fa86e9441cc5a6
Melting Slicks
Joined: Dec 2003
Posts: 2,857
Likes: 2
From: pawleys island sc
Originally Posted by blktie8
The Trrottle Body of choice is the Nick Williams
Nick Williams
E-mail Address(es):
nickw_61@yahoo.com
Nick Williams
E-mail Address(es):
nickw_61@yahoo.com
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Instructor
Joined: Oct 2003
Posts: 216
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From: Southlake TX
Originally Posted by Buzz1
LS-2 throttle body is the way to go.
The car is a 408 with around 13:1 CR.
Wired the LS2 into the stock C5 wiring with connectors and dynoed the car. The Throttle body seemed like it was wired with Torque managment hardwired into the TB. With the tech II on the dyno, it showed to open about 40% of WOT until almost 5k RPMs. Doesnt sound right to me. Tell me how to make this throttle body work and i will try again, untill then, from my personal experiences, its junk.
Safety Car
Joined: Jan 2001
Posts: 3,879
Likes: 3
From: Hobart, WI
Originally Posted by -Wade-
I have tried the LS2 TB on an LS2 intake on a C5. The car lost 20hp from the LS6 intake with a stock ported TB!
The car is a 408 with around 13:1 CR.
Wired the LS2 into the stock C5 wiring with connectors and dynoed the car. The Throttle body seemed like it was wired with Torque managment hardwired into the TB. With the tech II on the dyno, it showed to open about 40% of WOT until almost 5k RPMs. Doesnt sound right to me. Tell me how to make this throttle body work and i will try again, untill then, from my personal experiences, its junk.
The car is a 408 with around 13:1 CR.
Wired the LS2 into the stock C5 wiring with connectors and dynoed the car. The Throttle body seemed like it was wired with Torque managment hardwired into the TB. With the tech II on the dyno, it showed to open about 40% of WOT until almost 5k RPMs. Doesnt sound right to me. Tell me how to make this throttle body work and i will try again, untill then, from my personal experiences, its junk.
I would be happy to email you the proper wiring hookup.
meltn@new.r.com
Le Mans Master
Joined: Nov 2000
Posts: 7,294
Likes: 1
From: Coral Springs Florida
FWIW..I went with the 5.3 heads also by E.T sold by Agostino Racing at the time. Your gonna love 'em. 
I went with the TPIS OVAL TB and ported the LS6 intake...so far so good. No A/F issues and it breathes well at the top end ..Good Luck!
I went with the TPIS OVAL TB and ported the LS6 intake...so far so good. No A/F issues and it breathes well at the top end ..Good Luck!
Thread Starter
Instructor
Joined: Dec 2002
Posts: 183
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From: Shelby Twp MI
Originally Posted by vstella
FWIW..I went with the 5.3 heads also by E.T sold by Agostino Racing at the time. Your gonna love 'em.
I went with the TPIS OVAL TB and ported the LS6 intake...so far so good. No A/F issues and it breathes well at the top end ..Good Luck!
I went with the TPIS OVAL TB and ported the LS6 intake...so far so good. No A/F issues and it breathes well at the top end ..Good Luck!
Thanks,
KJ
