Fast 90/ls2
#1
TECH Enthusiast
Thread Starter
iTrader: (4)
Join Date: Jul 2004
Location: GA
Posts: 720
Likes: 0
Received 0 Likes
on
0 Posts
Fast 90/ls2
Well I finally finished the Fast 90 / LS2 TB install. The issue I had with it setting codes when switched on turned out to be a bad TB that I bought as "new" from the "other" forum.
My first impression is not good. Although it is definitly stronger at WOT, it now has a "soggy" bottom end and mid range. It has no hesitation from idle, but it feels just like I installed a hugh non-lockup stall converter. Going along at 40mph in third and easing into the throttle, it is very unresponsive.
The thing I liked most about my car after my Dart head install was the crisp, off-idle reponse. You could hardly tell it had a stall converter until you nailed it, but now. I will try and contact some tuners and get their thoughts to see if this can be "tuned out" If any of you have done an install, let me know what you thought of the change.
If I can't "tune it" it for better low end, I will have to go back to LS6/Ported TB
My first impression is not good. Although it is definitly stronger at WOT, it now has a "soggy" bottom end and mid range. It has no hesitation from idle, but it feels just like I installed a hugh non-lockup stall converter. Going along at 40mph in third and easing into the throttle, it is very unresponsive.
The thing I liked most about my car after my Dart head install was the crisp, off-idle reponse. You could hardly tell it had a stall converter until you nailed it, but now. I will try and contact some tuners and get their thoughts to see if this can be "tuned out" If any of you have done an install, let me know what you thought of the change.
If I can't "tune it" it for better low end, I will have to go back to LS6/Ported TB
#4
I hit on this topic in another thread (do a search under my name and you will find it)....The unported LS2 TB is your biggest problem plus a stock (unported) FAST will cost you a little in the low speed TQ department. Those are the issues you are experiencing....there is nothing else wrong with your car.
Last edited by Tony Mamo @ AFR; 06-14-2006 at 08:11 PM.
#5
TECH Enthusiast
Thread Starter
iTrader: (4)
Join Date: Jul 2004
Location: GA
Posts: 720
Likes: 0
Received 0 Likes
on
0 Posts
Thanks for the input Tony. I had already re-read your post on the low speed issues of the LS2. You definitly seem to have done your reserch on the FAST / any TB combo.
Thanks
Thanks