to tvis or not tvis what is the oppenion

donnyavery · 10-05-2009, 06:35 PM

ok most of you are filmier with my http://www.mr2.com/forums/forced-ind...get-build.html on my last 4agte i did not use the tvis i just blank it out but now im wondering what if i would use it what would it help with toque or hp or would it just get in the way of boost flow and i also run no vsv in my wiring harness so how would i make it work with out the vsv (which means no ecu control over it)

jimmer411 · 10-05-2009, 06:49 PM

Tvis is more of a bandaid to increase velocity at lower rpms, so its only going to be of use to you offboost.

A few people have swapped the smallport intake manifold with good results, and from what ive seen it flows better and maintains low end power, in not more.

toyotaspeed90 · 10-06-2009, 11:21 AM

t-vis works on the requirements of vacuum.... I would dispose of it. Either properly close up the t-vis plate or swap to a smallport head.

10-05-2009, 06:35 PM	#1 (permalink)
donnyavery body tech Join Date: Feb 2009 Location: berwick pa 18603 Posts: 663 Thanks: 23 Thanked 19 Times in 19 Posts My Google Map iTrader Rating: (2/100% )	to tvis or not tvis what is the oppenion ok most of you are filmier with my http://www.mr2.com/forums/forced-ind...get-build.html on my last 4agte i did not use the tvis i just blank it out but now im wondering what if i would use it what would it help with toque or hp or would it just get in the way of boost flow and i also run no vsv in my wiring harness so how would i make it work with out the vsv (which means no ecu control over it)

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10-05-2009, 06:49 PM	#2 (permalink)
jimmer411 NA > Boost Join Date: Mar 2008 Location: Enumclaw, WA Posts: 112 Thanks: 1 Thanked 4 Times in 4 Posts My Google Map iTrader Rating: (0/0% )	Tvis is more of a bandaid to increase velocity at lower rpms, so its only going to be of use to you offboost. A few people have swapped the smallport intake manifold with good results, and from what ive seen it flows better and maintains low end power, in not more.

10-06-2009, 11:21 AM	#3 (permalink)
toyotaspeed90 No Skills Join Date: Jun 2006 Location: Bellingham, WA Posts: 2,407 Thanks: 0 Thanked 149 Times in 144 Posts My Google Map iTrader Rating: (0/0% )	t-vis works on the requirements of vacuum.... I would dispose of it. Either properly close up the t-vis plate or swap to a smallport head.