Thunder Products TPI Valve

Customer Reviews for Thunder Products TPI Valve

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Thunder Products TPI Valve Reviews

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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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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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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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