ECU insanity... now with frame damage & pics Sorry, thought I'd go for instant let down here. So I purchased my 91' Hatch with what I initially thought had an original D15B motor. I'm not too sure anymore. I wonder if someone could help me with diagnosing what I've got here. I can get numbers off the block if necessary. But here is the issue. I was cleaning up the interior and came across this little doozy: A Speed Innovations Engine Management System. Would this mean the motor is definitely not original? I have put a call into Speed Innovations to get serial number info and what have you. But until then, any thoughts on how I should go forward? The car runs great, but won't pass emissions. I'm just wondering what I've got here.