Hey guys. I drive an 03 DG coupe, unfortunately a 5AT. Im trying to decide what to do for a summer project to improve my hp (therefore happiness level). I currently have an AEM cold air intake, cat-back, and am about to install a unichip ecu i just bought. I am trying to decide where to go next and i wanna hear what you think i should do (performance-wise). Im thinkin DC headers and a 5/16 spacer right now. Does anyone know if it would be worth it to make it a 1/2 spacer? If you think you have a better idea let me know. I appreciate the input.

 

id recommend a 5/8 spacer not 5/16

 

I'd say 5/16 spacer, exhaust, high flow cats, headers, coilovers, and pullies.

 

Why do you like the 5/8 better?

 

if you want the most out of those mods you should get a tune... the 5/16 will give you power all throughout the rpms and the 1/2 will give you more power at higher rpms

also look into a grounding kit, i recommend

https://g35driver.com/forums/group-b...nding-kit.html

^^link^^

 

i had 5/16 before then switched to the 5/8, i noticed the throttle response was better as well as the power through out the whole rpm range compared to the 5/16, im going to try the 1/2 in a few months or so and see how that gose