I have an 05' 6MT Sedan and so far I have installed the MD 5/16" spacer, mrev2, Z tube and filter. What is the next mod to increase the torque in the low to mid end levels of the powerband?

 

a tune?

 

Tune and 4.083 gearing, or just go FI.

 

changing your FD will help but you will sacrifice some MPG.

 

Boost

Gears

 

If you stay NA, 3.9 or 4.08 gears. will give you noticebly better torque in all gears. Pull much harder.

 

Get a good tune. It can do alot with the fuel mixture and timing and give you more than any bolt on alone can.

In fact, you might actually be losing power or running very lean because your engine is not tuned to your bolt ons.