I was browsing Rpm outlets the other day and i found throttle body spacers for $89. RPMoutlets said they increase horsepower by 10 and add 2 mpg depending on one's driving style. For the price it seems like an inexpensive mod, that while it might not increase horsepower that much, the fuel economy gain was very nice for the price. 2 mpgs is alot especially if you make a lot of road trips like i do. My question is : Is this a bunch of bs or do they really work that well? And i assume that you would have to get a tune also, right? Thanks for the imput.
Austin
Austin