John: I would think twice about doing the swap you are considering. The first thing is that the LH fuel injection on those two models differs--the 86 is LH 2.2, the 90 is LH 2.4. The 2.2 has a 25 pin ECU, the 2.4 a 35 pin. The 2.4 has a cold start injector, th... Login to read more.