ok i have a 88 crx with a b18a1 swap the car was turboed and had a walbro 255 fuel pump 450cc injectors and a chipped pr4 ecu i ran it NA with the same setup for awhile then just recently put on the stock injectors and stock ecu but when i start my car its will start and go right to 2500 rpm then after awhile it goes to 2000rpm and jumps from 2000-1500 and just does this non stop any ideas?

 

what ecu r using

 

pr4

 

is ur car mpfi? check to make sure all ur sensors r connected good. and check ur ecu for codes.

 

ok i found out the prob i have a bad ecu