So who wants their ECU's "Chromed"?

**Jesters Deadd** · 04-17-2012, 03:03 AM

Originally Posted by Greg E

Are you talking about triggering the pump thru the relay in the cab or the one in the engine bay?

The relay in the cabin has to be on for the pump to run on hi or low. It send power to the relay in the engine bay. The relay in the engine bay only redirects the power through a resitor to make the pump go to a low setting. So to prime the pump you should only turn on the relay in the cabin.

**Greg E** · 04-17-2012, 08:04 AM

Originally Posted by Forest Gump

Antero sent me a couple extra pins and I wired up my aem uego to pin 93 tonight. It reads fine in evoscan, but do I need to ground the sensor output on the aem to anything?

All the ECU sensors are tied to the same ground so they all read the same. Though you can get away with grounding the AEM to the chassy, it's best to use the ECU ground.

**99 vr4** · 04-17-2012, 08:33 AM

Originally Posted by Greg E

All the ECU sensors are tied to the same ground so they all read the same. Though you can get away with grounding the AEM to the chassy, it's best to use the ECU ground.

Sensor ground.... Not ecu ground... different pins.

Also don't tie sensor ground to ecu ground or to chassis ground... That would be bad

**Chris@Rvengeperformance** · 04-17-2012, 10:08 AM

thanks guys, looks like pin 72 on the 91-93 harness, pin 49 on the 99 harness side.

**R/T93** · 04-18-2012, 12:25 AM

Super bummer. My car has a 97 ECU in it..... harness is hacked to hell, lol. There was no reason for me to think there wasnt the 98 in the car. Car used to have an AEM, a buyer before me didnt want it, a 97 ECU and harness got put back in....... Needless to say I am pissed.

**99 vr4** · 04-18-2012, 01:58 AM

Originally Posted by R/T93

Super bummer. My car has a 97 ECU in it..... harness is hacked to hell, lol. There was no reason for me to think there wasnt the 98 in the car. Car used to have an AEM, a buyer before me didnt want it, a 97 ECU and harness got put back in....... Needless to say I am pissed.

That sucks man. So they pit in a whole new dash board harness or did they cut and hack on a 97 connector?

Did you just buy this car? If so you need a refund.

And if they just cut and hacked the harness in there... You really want to not use an adapter... Your going to want to rewire new pigtails in to ensure it is not screwed up our had a bad confection.

**fridayda13th** · 04-19-2012, 01:01 AM

Thank You everyone working on this, I chrome my 98sl ecu and i am getting great gas mileage normally i would be less than a half a tank. Now i'm at a little over 3/4. Cant wait to get some real turbos on it and get into the tuning aspect of things.

**Greg E** · 04-19-2012, 04:17 PM

Originally Posted by fridayda13th

thank you everyone working on this, i chrome my 98sl ecu and i am getting great gas mileage normally i would be less than a half a tank. Now i'm at a little over 3/4. Cant wait to get some real turbos on it and get into the tuning aspect of things.

win!

**ChargerX3** · 04-20-2012, 01:13 AM

Originally Posted by fridayda13th

Thank You everyone working on this, I chrome my 98sl ecu and i am getting great gas mileage normally i would be less than a half a tank. Now i'm at a little over 3/4. Cant wait to get some real turbos on it and get into the tuning aspect of things.

You going to show up to the cruise and dyno meet next month?