Hi i am a owner of a b18c1 93 civic ex and i have just got myself a jdm sir2 intake manifold, i am almost done portmatching it and have runes 1,2,3 all polishd up and am wondering how many hp yall think i will get from it. i was also wondering what size tb should i use i have acces to a 68mm for dirt cheap -=150=-!! well thx lots and right now i am putting 160hp and 114trq to the ground. my engine mods are 98 b18c1 p72 ecu underdrive pullies homemade ram air intake full exhaust <no header yet> i am currently runing 14.89 on good old steelies. update- i have just put a OFFICIAL mugen chip in my old p28 hopefully this will help some.