MugenCrx an I are droping a LS motor in his 89HF he bought a pretty slim B18A out of a T-Boned 90 Integra we have no tranny but thats not the problem. Since the 'Teg was a auto are we going to have problems w/the ECU since where converting to a 5spd? Also we know that the HF harness works w/MPFI but do all the clips match and are we looking at any lengthening?

We know that the 90 integra has a PR4 ECU that year. Is it the same for the auto, and also I went to look at your diagram and you have no diagrams of the PR4 is the PR3 diagram the same?

Pills, would it be the same as converting the JDM PR3 ECU for the PR4 ECU? The 90 LS integras have the PR4 ECU and its OBD0, so if you have any knowledge of this conversion the replys would and have been very useful. Thanks.

hmmmm that's a damn good question... i assume its the same thing since all obd1 ecu's are simliar like that, so obd0 ecu's should also be alike...

So that link you gave me with the diagram of the PR3 ecu will work for converting the PR4 ecu to manul?