ok before everybody starts flamming this thread i searched for this timelessly but did not find the answer, i read the great thread that is posted in the FAQ's on ECU's but still have a question...can i run a p72 from a 1997 integra which is a OBD2A with the hondata S200 on my 1997 base, and not have to get the conversion harness??? also if i can use my stock p13 harness??
ALL REPLIES WILL BE GREATLY APPRECIATED!


Modified by 97 Sleeper at 9:39 PM 7/17/2006


Modified by 97 Sleeper at 9:39 PM 7/17/2006


Modified by 97 Sleeper at 9:47 PM 7/17/2006

 

you need an OBDI P72 (or P28) ecu and an OBDII-OBDI adapter harness.

OBDII P72 won't do you any good.

 

yea but doesn't that make my car automatically illegal? and how do i go about passing the emission in PA???

 

You must run an obd1 ecu in order to run hondata in your prelude. Therefore, you will need an obd1 p72 with the obd2-obd1 conversion harness.

In most states, technically, these ecu's are 'illegal'. But that really only comes into play when getting emission tested. Usually you set everything back to OEM, pass emmissions, then put the hondata back on.

 

wouldnt that mess up the tune? and you would have to tune your car all over again after you put the p28 or p72 back on????

 

You can just throw the Hondata unit back on and you will not lose your tune.

 

ok so what exactly would i take off when going to emmisions? the whole p28 or p72 ecu or just the hondata? and if its only the hondata wouldnt it make problems anyway when it saw that it wasent the right ecu????

 

The Hondata is connected to the ECU so you would disconnect the ECU and remove it and the Hondata from the car, or depending on how/where the Hondata is installed, just remove the ECU and replace with a "passable" ECU.

Some install the Hondata "permantly" in the car so it would be pointless to remove from where ever it's installed. Just remove the ECU..

 

Not sure about PA, but here in VA, the emissions test is just a sniffer put into the tailpipe for exhaust testing. They don't check the ECU here, so as long as the engine is tuned you should still pass emissions....provided they do not physically look at your ECU.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by NoVALude &raquo;</TD></TR><TR><TD CLASS="quote">Not sure about PA, but here in VA, the emissions test is just a sniffer put into the tailpipe for exhaust testing. They don't check the ECU here, so as long as the engine is tuned you should still pass emissions....provided they do not physically look at your ECU. </TD></TR></TABLE>

Since you are OBDII, they will try to connect to the OBD access port. If there is no connection, they'll throw it on the rollers and do the standard sniffer test. So as long as your tune is good, it'll pass.

Otherwise, keep your spare P13 and convert it back to stock when it comes time for emissions testing.

 

you woudl also be surprsied how much information can be found at http://www.hondata.com as well.