Thunder Products TPI Valve

Customer Reviews for Thunder Products TPI Valve

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Thunder Products TPI Valve Reviews

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0 of 0 people found this review helpful.

Not just a gadget......it really works.

jim in Utah

Comments On Jul 20, 2013:I was kind of disappointed in the size of the vent when it arrived because the description said it was supposed to be 2 5/8". Well, the whole unit is that size but the vent window itself is only slightly bigger than an inch. However, that proved to big enough to make my Kawasaki 700 run great up to 9000 feet elevation. For going above that, two of these units will be needed with that engine size. But this valve worked great and when closed, it lets in absolutely no dust or water. Wide open, the pre-filter worked good enough but you probably won't want to follow anyone too close on a really dusty road.

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as expected

tim in MI

Comments On May 07, 2013:as expected

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Worked great!

DAVE in OH

Comments On Oct 16, 2009:I was taking a trip to UT..I live in OH. Some forums recommended installing these to deal with the elevation difference. Worked great, didn't need to rejet. I'd recommend this product.

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TPI valve

RANDALL in WV

Comments On Oct 18, 2009:Good product, better than drilling holes in your airbox, safer than removing your airbox lid.

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1 of 1 people found this review helpful.

works great! gets brittle easy though!

Michael in NV

Comments On Oct 02, 2009:put 2 in my warrior 350 air cover and noticed better throttle response! but went to close one of them after about a month and the plastic broke.... wont buy again cuz the price is way to steep! now i just drill holes where i need them and that seems to work even better!

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TPI valve

JEREMY in CA

Comments On Jan 30, 2008:works great

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1 of 1 people found this review helpful.

Small

Tyler in ME

Comments On Dec 24, 2007:I thought it would be a lot bigger and allow more air. Well it's like a 1.5inch square opening. Not very cool.

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Works as claimed

JAMES J in NY

Comments On Dec 16, 2007:I have two installed in air box cover of my 05 KFX400. I open or close the shutters based on temperature (summer vs winter). Easier than rejetting the carb every season.

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