lol! wowzers. i was wrong in the fact that i was thinking obd0 but the fact that you made a whole colony of mice chew on ur dizzy in order to make it fit is mildly disturbing!lol i'm joking. sweet man and again ur right. but with my motor combination it will turn to 8600 i promise. i am running JDM d15b with z6 head three angle valve job and extra stiff valve springs. the Ecu is a p06 chipped p28 with a base map for 450cc injectors peter from rywire ran the setup and it made close to 155 h.p. with a medium port and polish and gasket match all motor.after i install the turbo kit on 10 lbs. boost it will bring close to 250- 260 range on stock internals.and the cam and whole valve train is more than enough. i have seen people take d series motors fully built up to 10k so what rock are you living under?? why ever go b series?? more mounts more problems more b.s.! also i am in the process of a full DZ6 build to go into my 87' Si mugen and with my calculations it will make close to 300-350 h.p. on a full low compression build on 20 lbs. of boost when i say full i mean max bore after market crank,connecting rods, pistons, fully built head, max port,max valves. you add up the cost on D series full build vs. B 16 or 18 full swap mounts and harnesses build and get back to me! SOHC for life!