OK here's how it is......... Have a CRX DX. Have the SI d16a6 engine but am looking for an ecu... and a clutch too, but lets focus on the ecu. I plan to try and get the most out of this little engine as far as horse mainly. (I am not doing a dohc swap anytime soon). I have tried to investigate ECU's and have not found much info, stock ecu is a pm6 which will give me about 105 horse if I am lucky. So far I have found that my best option would be a pg7 dohc ecu. But are there particular years I should look for, like for example with the pm6 I should look only for 90-91. And am I really going to notice????? How many horse we talkin? Also are there any disadvantages to putting a DOHC ecu in a SOHC car besides the obvious mpg going down???? Advantages besides increased rev. limiter???? Pg7 ????? Is that the best I can do, or are there other ecu's that will do the job??? Also anyone got a good clutch laying around they want to sell for the d16a6?? Thanks for any info!!!!