HARROP TVS, What You Need To Know & FAQ
stock belt was slipping just a little bit for my tvs and 80mm pully. put on oversized tentioner, works great.
and napa had a belt listed part #D060702, looks identical to GM stock belt. cost 40$
and napa had a belt listed part #D060702, looks identical to GM stock belt. cost 40$
Maybe this will help you: https://www.cobaltss.net/forums/dyno-results-170/official-dyno-thread-194257/
Yeah its not pretty, but you can still get the job done.
Last edited by Pyros777; May 26, 2010 at 02:58 PM.
Just did it today haha. It seems like it'd be easier with the TVS at first, but then you have to pull the filter up and you're fucked
I just finagle it out under the blower and up towards the front of the car.
yeah exactly, with the m62 i could get my hand down from the top and get it out, now i gotta do it all from under the tvs to the front of the car
Reallllllllly debating a TVS. Anyone have experience with a 2.6" setup going to a TVS? If so, is the increased in power and pull a good noticable increase? I'd likely stick with the stock pulley and 60#'s for awhile. Worth it..?
So I finally decided to buy a TVS. Should have it next week!
I'm going to run on my 60#'s for awhile with the stock pulley and see how that goes.
Do I need one of those fuel pump rewire kits?
Also, is there any TVS specific things that need tuned for? I'm assuming I can adjust the MAF scaling and timing a bit with my existing M62 2.6" tune and the car should run pretty good. Anything else I'm missing?
I'm going to run on my 60#'s for awhile with the stock pulley and see how that goes.
Do I need one of those fuel pump rewire kits?
Also, is there any TVS specific things that need tuned for? I'm assuming I can adjust the MAF scaling and timing a bit with my existing M62 2.6" tune and the car should run pretty good. Anything else I'm missing?
So I finally decided to buy a TVS. Should have it next week!
I'm going to run on my 60#'s for awhile with the stock pulley and see how that goes.
Do I need one of those fuel pump rewire kits?
Also, is there any TVS specific things that need tuned for? I'm assuming I can adjust the MAF scaling and timing a bit with my existing M62 2.6" tune and the car should run pretty good. Anything else I'm missing?
I'm going to run on my 60#'s for awhile with the stock pulley and see how that goes.
Do I need one of those fuel pump rewire kits?
Also, is there any TVS specific things that need tuned for? I'm assuming I can adjust the MAF scaling and timing a bit with my existing M62 2.6" tune and the car should run pretty good. Anything else I'm missing?
Yes, sir 
Thanks! If I get 80#'s and drop to a smaller pulley at which point would I need a rewire or other mods?
I'm trying to get away with reasonably safely running a TVS as much as possible with a conservative tune. I want to stay away from meth and a return style fuel system for now. How small of a pulley can I run on 60#'s and what about 80#'s?
I'm trying to get away with reasonably safely running a TVS as much as possible with a conservative tune. I want to stay away from meth and a return style fuel system for now. How small of a pulley can I run on 60#'s and what about 80#'s?
Last edited by csementuh; May 27, 2010 at 03:31 PM. Reason: Automerged Doublepost
So I finally decided to buy a TVS. Should have it next week!
I'm going to run on my 60#'s for awhile with the stock pulley and see how that goes.
Do I need one of those fuel pump rewire kits?
Also, is there any TVS specific things that need tuned for? I'm assuming I can adjust the MAF scaling and timing a bit with my existing M62 2.6" tune and the car should run pretty good. Anything else I'm missing?
I'm going to run on my 60#'s for awhile with the stock pulley and see how that goes.
Do I need one of those fuel pump rewire kits?
Also, is there any TVS specific things that need tuned for? I'm assuming I can adjust the MAF scaling and timing a bit with my existing M62 2.6" tune and the car should run pretty good. Anything else I'm missing?



