Not sure which 2008 GMC Sierra Throttle Body Spacers are right for you? We have over 1486 customer reviews, with an average rating of 4.5, to help you find exactly what you're looking for. Here's what some of our customers have said:
"Can realy tell on the low end torque. No considerable increase in mpg to mention. Very easy installation." —William S from Waynesboro, MS bought an Airaid PowerAid Throttle Body Spacer for a 2008 GMC Sierra.
"Looks cool, spools like a turbo and gained 2 mpg... will pay for itself...
Great product..." —Aristides U from Yorba Linda, CA bought an Airaid PowerAid Throttle Body Spacer for a 2008 GMC Sierra, 1500, 5.3L V8.
"I ordered the Jet Power-Flow TBI Spacer because the review said it did not make the annoying whistle that other TBIs make. They were right. I installed after my K&N intake and noticed a difference in my MPG and Power with both installed. They didn't seem to make a difference from 0-25 MPH but from 25-60 MPH it seems like my truck has alot more get up and go. I would highly reccomend this with the K&N intake. No problems with either so far." —Dane D from Lake Charles, LA bought a Jet Power-Flow TBI Spacer for a 2008 GMC Sierra.
"I notice more low end power i gained 2 miles per gallon better in fuel. I think this product is well worth the money it should pay for itself in no time.. Thanks" —James S from New Richmond, WI bought an Airaid PowerAid Throttle Body Spacer for a 2008 GMC Sierra.
"I used the Street & Performance Helix Power Tower Throttle Body Spacer for about 2 months, and I loved the power it brought to my low/mid-range power band. However, the claims that you will recieve, "improved gas milege" has yet to be seen. With any type of performance part, you will get the performance it promises, not good gas milage." —Jeffrey H from Sanford , NC bought a Taylor Cable Helix Power Tower Throttle Body Spacer for a 2008 GMC Sierra, 4.8L V8.
"Overall this is a good product . Easy to install and did give my truck slightly more hp and torque and also better throttle response." —Joshua S from Saint Gabriel, LA bought a Taylor Cable Helix Power Tower Throttle Body Spacer for a 2008 GMC Sierra, 5.3L V8.
"ONE OF THE BEST PRODUCTS THAT I BOUGHTEN FROM AUTOANYTHING.COM FOR MY GMC AND CADILLAC AND I WOULD CONTINUE BUYING FROM THIER AND WOULD RECOMEND ALL MY FRIENDS TO THIS WEB SITE." —Juan V from Edinburg, TX bought an Airaid PowerAid Throttle Body Spacer for a 2008 GMC Sierra.