I have a 4.0 in a 93 splash. It has been bored out, cammed, has a cold air, preformance injectors, headers, 2 1/2 inch piping to a borla muffler, but I want it to run faster! any suggestions on how to harness more out of that lil engine would be appreciated.

 

forced induction

 

Stroke it!

http://www.moranav6racing.com/catego...?CategoryID=32

 

Either a motor swap or a big upgrade like posted above is about the only way.

 

I might stroke it ive been reading up on it and that seams to be a good idea, I have a high compression race motor itsa 289 with high flow heads it came out of a race car but with CA laws that will NOT be close to legal