Alright guys I have 01 F150 gotts intake mod and k&n free flow air filter wanting to do some mods that isn't going to thro check engine light but give me some performance and Eco boost ( I know they usually don't go hand in hand usually sacrifice one for the other ) and would like to know what all flash programmers work good and some exhaust I've found some magma flow but afraid to purchase anything i really don't want to throw the check engine light until I get a flash prog. Any and all help is great appreciated I have looked and really can't find much at all

 

Did you not read my and Raptor's responses in the other thread?

Get that K&N filter out of there, the oil can foul the MAF. I had one for a while and it did absolutely nothing for power or economy, but it sure let a lot more dust into the intake tube. The only reason to put anything but the stock exhaust on a 4.2 is if you want more noise. You have to like the sound of a V-6 to do that anyway, most of the people around here think a V-6 sounds like crap no matter what you do to it, they are all V-8 dinosaurs. I happen to like the sound of a V-6, so I went to my local muffler shop and he put on a Gator SI/DO glasspack and bent me dual tailpipes for $228. It did absolutely nothing for performance or economy. The Gotts mod and a cat back exhaust will not trip the CEL.

 

A tuner is the best mod giving the truck more power, torque, and better fuel economy. I bought a used Superchips tuner from a member on this site and I am very pleased with the results.

 

There really arent cost effective mods. The only thing I've done to my truck that I consider cost effective is the gotts mod. Best thing you can do is stay on top of maintenance.