if i put a 70mm tb on my jrsc set up at 10 lbs. will it be worth it or will it not even do anything. non intercooled but fixing to grap a water injection kit spearco. and is the pacesetter cat back exhaust holding my car up or does it matter. i just had a jdm 4-1with 2/ 1/2 collector, put on and the cat taken out exhaust is 2 1/4 just lookin for some advice on what i should do. its all on a lsvtec. need some advice on some little mods to make faster or what., thanks.