what are some good mods for my '04 g35 coupe 6 spd to get good gains on torgue?

 

ART pipes and full exhaust.

get better torque multiplication with a 3.7FD if youre auto. or a 3.9 or 4.08 with LSD if you're manual.

 

DrewDrew is correct. Get the TDX2 and ART pipes for great torque gains.

The diff I have no experience with, but want to get a 4.08 with LSD.
As I understand it, if you change the final drive ratio it multiplies torque by gear.

 

The ebay chip puts out 25 WHP. Guaranteed. You can even double up the ebay chips by duct taping them together and it puts out 35 WHP.

 

Plug and play too I heard^
Actually
Plug and racecar

 

Boost.

 

Yes, but 4.08 FD gears will put your rpms at 4k at 80mph

 

Gdirtyfive is right OP.

I just want them cause I never get out of 4th gear anyway...damn city driving

 

OP said he's 6mt. 6th gear 4.08fd at 80mph is 3000rpm

 

No way. My stock FD (3.5?) Is 3k at 80mph.

 

You could always just get smaller wheels. That'll give you more TQ the same way a final drive does. Haha. Riding around on some sentra 14s.

 

Both the 03 Auto & Manual are very close to 3K at 80. Your car should have a 3.3 if auto or 3.5 if manual.
I always use this :http://www.car-videos.net/tools/speedrpm.asp and with the 4.08, the RPM should be around 3400.

 

Yeah, I have an 04 6mt. Wasn't sure what the FD was, but do know its 3k at about 80 or 82mph or something.

 

NM, I'm fairly certain all of the manuals came with a 3.5.

 

That's what I thought cuz the sedans had slower 0-60s for those years. Can't imagine it was cuz of a different amount of flywheel HP (I know that's what they said, but it wouldn't make sense). If the coupe 6mt had more stout gearing tho, it would make plenty of sense.