I just got a aem ems 30-1050 and it says its for a 99-00 civic. Will this work for my 96 civic with a ls-vtec setup? Will i need to buy a obd2a to obd2b harness adapter? Or can i just plug it in, i also had converted my car to obd1 so i am very confused as to if i can run this setup.

 

you converted the car to obd1? with a jumper harness? if so, just remove the jumper and buy a obd2a -> obd2b jumper.

 

yeah thats what i was going to do but then since it is obd2 will i need to have a second o2 sensor? and a crank sensor or can i delete them in the program? also i see the ems has all four plugs and they all have pins so it looks like you could use it with obd2a or obd2b but i do not know for sure.

 

The ems doesn't care if you have any o2 sensors or 5 of them. You can taylor your calibration to your hardware, same concept for the crank sensor.

 

Get the OBD2a to OBD2b conversion harness: Then you will not need any additional things for the AEM.

http://rywire.com/store/obd2a-obd2b-...763e0ad9789391

 

well i know i need the conversion harness but i am also using a 0bd1 distributor. so i think will be my only other problem. i could just put in a obd2 distributor in or just change the pin outs at the ecu right?

 

Run an obd1 or obd2 distributor with it to make your life easier.

 

what do you mean run obd1 or obd2 that does not help me.

 

Doesnt the obd1 distributor run better with an aem ems? I have and obd2 dis. on my LS and I had a hard time to fine tune my idle. It ALWAYS dies out when the rad. fan turns on or if I put the AC on. For my ls vtec Im going with an obd1 distributor and am using a obd2 to obd1 distributor jumper harness.

 

An obd1 and obd2 distributor will function exactly the same.

 

well i guess it wont solve my problem. I dont understand why it always dies and even when I start it I need to give a little gas to make it idle.

 

Yes, you can run your OBD2 distributor. The OBD1 and 2 are the same with the exception of the connectors.

 

Sounds like the tune is off a little.

This sounds like an after start fuel enrichment that needs adjusted, along with some other cold start fuel maps.

The issue with it dieing when turning on the A/C, is due to the idle tuning that needs tweaking. Prolly have to adjust the IACV adjustment percentage for when the A/C input is ON. The overall idle setup may need to be adjusted as well, to keep a steady idle and it not dropping out when the fan is turned on, decel, etc.

 

check your ac presher switch. If the presher switch is bad it will not bump up the idle when the ac compresser kicks on along with the fans.

 

Oh and i figured it out, so thanks guys i dont know why i made that so hard lol.

 

Someone told me to tune the idle% vs rmp map whith my AC on and high lights on and try to get it to -5% at the set idle. My set idle is 1000RPM. If I try to make it idle lower it dies out every once in a while. Thanks for helping me out, I apreciate it.

 

The AEM has an input already for the A/C input to kick up the duty a certain percentage. It's in the regular idle options. I usually shoot for -2 to -3 percent for idle learned value. Depends on the car.

 

I wish there were some tuners down here to help me with my aem ems. What percent did you set the idle at when the AC kicks on?

 

I adjust it when the A/C is on to maintain a steady idle and idle feedback percentage.

 

-5% is excessive. Try 0 or -1% with all your accessories on.

Make sure your TPS % is NEVER 0%. At idle it should be 1 or 2%. You will need to log it and check the minimum voltage. Then set the TPS min to this minimum voltage. If you set it up using the built in wizard, it wont function properly. This causes an idle problem like you're describing as well as causing a few other TPS based functions to operate improperly.

Got mine idling at 650 RPM with no stalling.

 

I already set the minimum TPS voltage so it reads 2% at closed and 98% at WOT. It still idles crappy, could it be from my cams? There crower 404's in a built LS head.

Oh and another thing, for some reason my TPS% slowly goes up. I always have to set the voltage higher. I thought it was the TPS moving but its tight on there. Any ideas?

 

reviving a dead thread here, but can this be used to tune boosted applications

 

An AEM EMS? Yes