no codes are coming up at all on the OBD II reader......

 

check the fuel pressure. what ac spark plugs did you use. i tried some cheap ones when i put the headers on and they didnt last long.

 

spark plugs are regular delcos - not the rapid fires... 41-943 I think...they have less than 3000 miles on the plugs. I pulled one out, looked like it was burning good.

I don't know how to check the fuel pressure or what tools I even need for that.

 

http://shbox.com/1/4th_gen_tech2.htm...essure_testing