Ok, i have a 1990 civic si and i boosted it a while ago. I got an obd0-obd1 conversion on it so it could be tuned with uberdata. Now i am taking off the turbo because i need a more reliable car for school. I was wondering if i needed to get an obd0 map-sensor, ecu, and distributor to have it run good or if i can just take the tuning chips off the obd1 ecu to make it run right. May be a dumb question,lol.

thanks

 

should be a jumper that enables the ecu to use the external rom"program" if you undo the jumper then the ecu resorts back to stock.

 

just take the turbo off and put a header on and you are done. the car should actually drive pretty close to stock. the computer is just going to use the vacuum portion of the fuel map so you dont need to change anything.

 

Do you know if thats the j1 jumper???

 

j1 is the jumper. i usually solder a switch in place of that so i can enable and disable the stock vs modded programs.

 

sweet, thanks for the info.

 

Can i just cut the jumper or do i need to completely desolder it?

 

cut it

 

I just cut the jumper and re-hooked up my ecu. Now i have a solid cel and the car is in limp mode.

 

whats the code?

 

I dont know. The cel wont flash a code it just stays on,hmmm. Maybe i screwed up my ecu cutting that,eww.

 

you should have some kind of jumper wire on your conversion harness to troubleshoot cel codes.