Well guys, I am having two major problems right now. I have done tons of reading on forums and think I might have some idea what could be wrong but I need a little more help. First off, here is what has been done to my car. I have an AUTOMATIC 93 Prelude. There was an SI motor in there (H23a). I just had a swap done to a JDM H22a but I still have the AUTOMATIC tranny in there. I have a P13 ECU in the car, which is the one for an H22a. Now, my first problem is that Vtech isn't kicking in. The car revs to 6200 RPM and that's it. The P13 I have is an AT one but I didn't know they made P13s for autmatic trannys. Either way, 6200 RPM is what the autmatic ecu allows for an SI while the manual ecu revs up to 6800 I believe. With Vtech I should rev higher however. The JDM H22a engine I purchased didn't come with a distributor so I used to distributor off of my H23 and just ran the wire for the Coil. I believe the JDM h22a normally has a coil-less distributor. Could using the distributor off of my H23a cause any issues? Also, no where do I have a knock sensor. I don't know if this is normal for the autmatic transmission or not? The wires for Vtech have been run to spec. I read that if the oil pressure is off or if the engine is throwing any codes then Vtech doesn't kick in but my CEL doesn't ever turn on so the ECU isn't throwing any codes. Basically, if my engine is running in limp mode. How can I daignose the problem. Where would you start. What could be wrong in my setup. Does Vtech work even though I have an autmatic transmission? Second, I had a hesitation problem and I read that it is common among the H22a motors. No one had really figured out what was causing it cause it is different for a lot of people. Basically what was happening is that when the engine was warm, I would be driving and it would randomly feel as if something grabbed ahold of my rear bumper and pulled me back for a second. Sometimes the RPMs would stick at 3100 for a bit until I gave the car a lot more gas. I read on one forum that one guy adjusted his timing by about 5 degrees and it helped him. I did that along with adjusting my TPS sensor a bit and the car runs better now however, when I reved it to max a couple times while driving the CEL came on and went off when I turned the car off and back on. Is it going to affect my car really badly to have the timing set slightly more aggressively? What is the stock timing setting for an H22a? I know for the H23 it was 15+-2. Also, my car still revs up to 6200 only and wont go hight and I don't think Vtech is kicking in. Or it might kick in but only go for like 1000 RPM (from whatever it is activated at to 6200). Any ideas. I have been tackling these problems for a while and really need some help right now. Any input is GREATLY appreciated. Thanks guys!