Has anyone tried the OBD2 EX intake manifold on an 88-91 SI? Problems?

 

Yes there a few problems, but not too bad to fix. The 96-00 EX has the intake air temp sensor in the intake pipe where the OBD0 has it in the manifold. I drilled out the EX manifold and mounted the IAT on the runner. IACV plug was different so you will need the plug from the EX harness or solder directly to the leads of the sensor. That's the only problems I came across when installing a 97 EX manifold onto a 88 Civic STD as part of a MPFI swap.