Here' a web site http://www.geocities.com/intense79/tps one of many if you look around. The TPS is nothing more than a varible resistor and changes the voltage output from it to the computer indicating the position of the thottle valve. If you do not understand basic vechicle electrical systems or engine component function, then do this only at your own risk. On intial check of my TPS it was reading .540 volt. No two TPS switches will read the same, when checked. The tolerances on this component vary. I was quite happy with the change it made on my truck. But if you don't do your own vechicle repairs and maintance. I would not recommend it.

 

Anything good or bad about flowtech mufflers? I can't find much about them.

 

Has anyone bought the Flowtech force II cat-back?

I am just wondering how much the sound level increases?