difference between a kl36,kl31, and a kl46 ecu?

stereoking15 · Post by **stereoking15** » March 21st, 2006, 2:27 pm

what is the advantage or disadvantage to running any of these ecu's? wich one has the best overall performance and capabilities for the mx3 wit ha klze swap running obd1? input would be appreciated

PATDIESEL · Post by **PATDIESEL** » March 21st, 2006, 2:59 pm

The difference is the fuel maps and VRIS points. The best ECU for your ZE will be the one that matches your version of the ZE.
So, the way to tell what ZE you have is by the throttle body number. It is stamped on the top of the TB.
Mixing and matching will cause a decrease in power.

precidian · Post by **precidian** » March 21st, 2006, 4:29 pm

http://www.mx-3quebec.com/swap6.htm

JM1EC-V6 · Post by **JM1EC-V6** » March 21st, 2006, 5:49 pm

http://www.mx-3quebec.com/Forum/viewtopic.php?t=8381

Tunes67 · Post by **Tunes67** » March 21st, 2006, 7:34 pm

Bah!! Dont bother with the ECU's.. stay with your K8 ECU and run a piggy back fuel management system. That way you can still pull all your error codes simply.. the cost is the same and you get better performance for the money spent.

Tunes67

Mnemonic · Post by **Mnemonic** » March 21st, 2006, 7:45 pm

i wouldnt say the cost is the same tunes, its a little bit more to go piggyback thats what i plan on doing and im using a kl31 ecu

Tunes67 · Post by **Tunes67** » March 21st, 2006, 8:07 pm

Guess that kinda depends though man.. I have seen people on e-bay pay $400 for a KL31 (and yeah I laughed too LOL). I did generalize.. but you got a good deal on your ECU and not everyone will get that good of deal man

Tunes67

precidian · Post by **precidian** » March 21st, 2006, 8:17 pm

I only paid $150 on ebay for my KL-31 ECM... so ..there are deals out there.

Slammed6 · Post by **Slammed6** » March 21st, 2006, 10:30 pm

Honstly i have used both a KL-31/36 ECU. and from what i am learning now my chipped K8 ECU is the cheapest route, and provided more HP than my KL-31/36 ECU. And you are still able to pull codes like normal.