Hi Everyone, Is it ok to use a Evo 8 ECU to Evo 5 Engine? Is there any modification that need to do for this to work? or this is just plug and play and remmap?

 

if its an evo8 4 plug ecu its easier, you need to swap some ecu pins and wires then switch off egr etc in the rom.



some more info here


https://www.evolutionm.net/forums/ec...t=evo8+ecu+evo

 

Thanks buddy this is a big help

 

one more thing, what advantage can i get if i replace my ecu with evo8 ecu?

 

there is none now is was a common to fit evo 7or 8 ecus to the earlier models before 5/6 ecus could be mapped with ecuflash

 

Agree, none, I'm running SD on my evo 5 ecu and the rom does everything an 8 one can.

 

I haven't been following up on the H8 ecu recently. Are larger fuel and timing maps available now?

 

Are you using the openport 2.0 cable? I was trying to figure out what I can use with my EVO 6 but it looks like the 1.3 cable isn't supported for the Evo 4/5/6?

 

has to be the op2 cable

 

op2 worked on my 6 but i had to jump 2 pins with a paperclip. i forget which ones they were.

 

Sorry to bring up an old thread but is tuning the Evo 5 ecu the same as tuning an evo 8 ecu? Is support as widely available for the 5 as the 8 in terms of tuning through ECUflash?

 

same methods and support , fuel trims work differently so just get the low trim to within +/- 5 % as it maxes out at =/- 4.8

 

Thank you so much, good to know! it is much easier to find an evo 8 ecu so I thought I'd give the evo 8 ecu a shot for the time being. I borrowed one that my friend had for sale and he said I could return it if it doesnt work out. Plus the fact that there is the 7202 and 7203 variance in the V ecu scares me...

Hopefully no hiccups, I will be using an extension harness(AEM or APexi?) because I am scared to cut or splice anything from my factory ecu harness

anybody got a preference on brand between those two?