Can you run a P72 on a H22a1 w/o throwing codes and run smooth? Im looking at a H22 teg and Im not very familiar with H motors......Thanks

 

NO!

The engine will run unsafely lean, and the knock sensor will pull lots of timing around the VTEC activation.

Get a p13 or a p72/28/30 with Neptune or Hondata tuned to run a H22.

 

That doesnt make much sense now does it. you would be using a stock obd1 integra computer on an H22.............and the H22 would lean out and hand grenade.

 

i woudlnt say the motor would grenade but its not going to put the motor in safe parameters.

 

The car would turn on and it would run, but don't you think a 2.2L motor would need a little more fuel then programmed into a 1.8L motor's stock fuel maps?

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by FAQ - The definitive Prelude ECU choice &raquo;</TD></TR><TR><TD CLASS="quote">
P72 - The GSR ecu. This ECU does control the IAB's and also has knock sensor capability, but is more expensive than the P28 ECU. Technically this is the best ECU to use, because it has all of the features, but usually these ECU's are overpriced. Knock sensor capability is mostly useless, but if you're running an N/A motor the IAB control might be something you want.
I've heard stories about people running stock P72's on prelude motors and claiming power gains. These people smoke crack. The maps on the stock P72 ecu are designed for the B18C1 motor, NOT for the H22. If this ECU makes more power, it's probably because it's running more timing or less fuel than it should be.
The P72 IS Hondata compatible. In addition, the Hondata software allows you to change where the IAB's open/close, so you can engage the shorter runners earlier or later if you'd like.</TD></TR></TABLE>