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HARROP TVS, What You Need To Know & FAQ

Old 04-11-2010, 09:41 PM
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is 350whp 300wtq possible with a stock pulied tvs and built engine(p&p head)? no meth or n2o
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Old 04-12-2010, 10:21 AM
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hmm.. no probably not. You need a smaller pulley and some higher octane than premium gas.
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Old 04-12-2010, 11:34 AM
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Originally Posted by RooTBeeR View Post
is 350whp 300wtq possible with a stock pulied tvs and built engine(p&p head)? no meth or n2o
To quote the Golden Corral commercial....'the bird says no' (pirate voice)

Laughing at myself not your question....
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Old 04-12-2010, 11:48 AM
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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$
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Old 04-14-2010, 03:10 AM
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so what about a 70mm + meth + p&p head?
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Old 04-14-2010, 01:23 PM
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Old 04-20-2010, 09:14 AM
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I heard someone say that the Stage 3 tune is no good? Are they speaking of the one from O t tp?
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Old 04-20-2010, 12:28 PM
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Could I use a GMS3 PCM and trifecta on top of that for this S/C upgrade?
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Old 05-25-2010, 07:02 PM
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I have a question for you TVS guys. How hard is it to get the oil filter out with that bigger supercharger? Its all ready a slight pain in the butt
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Old 05-25-2010, 07:07 PM
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it still sucks.
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Old 05-25-2010, 08:36 PM
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Originally Posted by Area47 View Post
it still sucks.
x2...
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Old 05-25-2010, 10:28 PM
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i dont think its any worse but its not any better
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Old 05-25-2010, 11:38 PM
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It sucks when you have big hands
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Old 05-25-2010, 11:43 PM
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Originally Posted by CobaltSSilver View Post
Could I use a GMS3 PCM and trifecta on top of that for this S/C upgrade?
You could use the GMS3 base and any custom tune, whether it be trifecta or HPT. I did 278whp/255lb-ft on the stock TVS pulley on 93 octane with a trifecta tune. Have yet to dyno my HPT tune. (no meth)

Originally Posted by impalaboy327 View Post
I have a question for you TVS guys. How hard is it to get the oil filter out with that bigger supercharger? Its all ready a slight pain in the butt
Yeah its not pretty, but you can still get the job done.

Last edited by Pyros777; 05-26-2010 at 03:58 PM.
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Old 05-26-2010, 12:45 AM
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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.
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Old 05-26-2010, 12:52 PM
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Originally Posted by Billig ss/sc View Post
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
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Old 05-26-2010, 12:56 PM
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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..?
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Old 05-26-2010, 01:04 PM
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area's the only one thats gone that small as far as i know
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Old 05-26-2010, 01:21 PM
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I mean a 2.6" setup on the M62 to a stock pulley on the TVS...
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Old 05-26-2010, 01:27 PM
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haha, oh my bad
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Old 05-27-2010, 03:49 PM
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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?
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Old 05-27-2010, 04:06 PM
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You shouldnt need the rewire for the stock pulley. Congrats on the purchase!
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Old 05-27-2010, 04:16 PM
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Originally Posted by csementuh View Post
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?
finally got it huh?
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Old 05-27-2010, 04:31 PM
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Yes, sir

Originally Posted by InfraRedline View Post
You shouldnt need the rewire for the stock pulley. Congrats on the purchase!
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?

Last edited by csementuh; 05-27-2010 at 04:31 PM. Reason: Automerged Doublepost
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Old 05-27-2010, 07:05 PM
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Originally Posted by csementuh View Post
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?
Let me know how that works out for you. I have a 2.8 sitting here, I planned on getting a set of 60lbs injectors but if I can get away with going to 80's and putting in a TVS with some major power I'll stick with my 2.9 and GM s2 tune till I get the dosh then go all out. I too want to run the TVS but don't want to mess with huge upgrades on the fuel system, and I too do not want to run methanol injection E85 ect... Just want to use pump gas and hope the block holds up stock...if not then I will put i the rings pistons and head bolts. Beyond that just too much dough and risk on a DD car. i would need to snag another DD and then push this one as a drag/track only car that I play with on weekends.
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