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atokarch · Joined: 17 Mar 2002 Posts: 1

I have a 2001 GMC truck with the 5.3 l engine. Do throttle body spacers increase torque and horsepower on this type of engine? If so, what happens to fuel economy? I'd like a little more torque for towing.

Thanks,
Al T

Guest · Posted: Mon Mar 18, 2002 8:50 pm Post subject:

I put a poweraid throtle body spacer pn my 1996 chevy tahoe. It made a whisleing sound at a certain throtle position and did nothing for power or milage,very disopointed.What did help power was a Granitelly mass air flow sensor,and an electric cooling fan.

Guest · Posted: Wed Sep 25, 2002 8:16 pm Post subject:

Throttle body spacers dont do anything unless if you've got TBI (throttly body injection), which is like an electronic carb, so to speak.

Guest · Posted: Fri Feb 07, 2003 9:42 pm Post subject:

those things are junk unless u got an older truck like a 1989 suburban with a carburator