[jdmspoonfit]

I am wonder how much HP i would gain with this set up.

- T1R reponse headers
- T1R racing covertor
- T1R carbon intake
- T1R crank pulley

- Spoon B-pipe
- Spoon N1 axle-back

these are installed to a 2008 USDM GD3, so if anyone can give a estimate HP gain on this set-up, please advise. and consider most of the parts are made by T1R, I decided to put it here in the AJ section, since they probably knows better.
thanks