Welcome to SPR Performance - a.k.a TBIParts

• Please feel free to contact us by phone or email by Clicking Here!

• Build times are 4-6 weeks please understand that.

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• No Refunds allowed.  We ask that you make sure you are confident in purchasing before you pay for our services.  Due to the nature of our business it is very difficult to suddenly get a request for a refund.

Build times are longer.  our shop is current and on time, but the boring shop is considerably behind for many reasons.  

We Specialize in:

• Custom SBC (46mm) and BBC (54mm) TBI Builds

• Stock SBC (42mm) and BBC (50mm) TBI builds with mild performance mods

• Marine TBI unit builds

• 305 to 350 TBI Conversions

• Carb to TBI Conversions

• Custom TBI builds for 383 Strokers and other higher TBI horsepower setups

• F.Y.I.  Typical rule of thumb with TBI is 1HP per cubic inch.  So, SBC TBI limits are 375-400HP with BBC TBI being around 450HP max.  

I DO NOT GIVE TECH SUPPORT ON COMPUTER RELATED ISSUES

We Buy GM TBI Cores!

Click Here to view Core Pricing!

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Custom Chips & Engine Build recommendations Harris Performance, INC.  

www.TBICHIPS.com  Please contact him via his website or email him at tbichips@hotmail.com 

I ONLY RECOMMEND CHIPS FROM HARRIS PERFORMANCE