That swirling effect sounds reasonable. I doubt it's the b16c1 though cause james (blkcrx) reckons I've got one of the earliest VTEC motors judging by the ECU even though the papers I got with the car say 92 CRX. Anyone know how I can tell what the engine is out of or if it's original. No requests to look at VIN numbers and stuff cause the more I find out about the car the dodgier (how do you spell that?) it's history seems.