I have a 99 civic si with a greddy turbo. I want to convert to OBD1 because I have a test pipe and my check engine light keeps coming on because of the second o2 sensor. Can any one let me know which is better ecu to go with. I was told to go with a P30. Please let me know. Any advise is well appericated.

 

i would prolly go with a chipped p28 since its cheaper and you can put a boost chip in that ****

 

I agree. P28 is dirt cheap and is all you need for 99 Si.

Also, Hondata works great in it. We have quite a few customers with exact same set up with P28 with Hondata. Cars run extremely well. Plus, Hondata allows you to get rid of the horrible 'FMU' supplied with the Greddy kit.

We are a Hondata dealer, let us know if we can hook you up!

 

Cool..thanks for the advise. I got rid of that blue crap box, I have a V-AFC 2 in there now and the car runs great. I will look into the p28...thanks again