hi guys... does any 1 know if the evo 7 engine is da same has the evo 8 i know they both 4g63... im talking about the cams, rod pistons & the ecu.. does the evo 8 AEM engine management fit the evo 7..

i want to know this coz im selling my evo 9 n going back home to my country n looking to buy a evo 7. i know it sucks going form a 9 to a 7 atleast its better than going for a STI...

 

To my understanding, the Evo VII turbo is slightly different and I know there are minor differences due to the VII having the anti-lag hardware (a few of my coolants pipes have been different, a couple gaskets, ect...) and I have heard that the wire harnesses are different on the ECUs, but I haven't verified this myself yet.
Dan

 

thanks dan.. looks like ur in IN love to check out ur car since its a VII.. aw.. i know the turbo n the stuff would be dif. but was hoping the ecu would be da same so i can take a AEM form here. hope the cams & rod pistons would be the same..

 

I would bet the cams, rods, pistons are the same. From my knowledge the only major difference between 7 and 8 is the drivetrain. I don't think the evo has had much big changes, just drivetrain and turbo changes... until the 9 with variable valve timing.

 

there basically the same thing basically same horsepower evo 7 has ayc, handles better i think, I have coilovers on my 7 and its handles like its on rails

 

The reason I think the wire harness is different is because Greddy offers two different options for the wire harness on the emanage, one for Evo VIII and one for VII. And you are more then welcome to come down and take a look at my Evo, I will be doing lots of autocrossing in the area.
Dan

 

The pinouts on the 7 are slightly different but crucial to the 8!
The a/c and fuel pump pins are switched around.
So the AEM for the 8 will not work untill you make the changes!

 

the AEM can be installed to the 7 only 2 pins to be switched. i am not sure but i think fuel pump and may be AC.

the engine and turbo are almost same. GSR evo 7 comes with ACD & AYC which are perfect.