I have a 91 HF with a 93 delsol s engine it is a d15 and i have a si tranny and si ecu....from what the people that are putting the stuff in they say that it is bascicly a SI...what do u think i well hit with intake and exhaust


also another question is how much can i spray on the block there is a civic couple in my hometown that is running a 75shot that is also a d15 can u spray this much and for how long?