openecu.org

Dear All,

My name is Cris , i'm from macau and i own a Evo IV .

I'm planning to upgrade a E7 ECU in my car, i know i need the ECU and to change some wires in the connectors.I also have the ECU Flash, Evo Scan and Tactrix cable.

But what more do i need?
Can I flash the E7 ECU with a Ralliart E7 Rom?I know E4 & E7 the injectors and the CAM is a discrepancy,If the E7 rom didn't work, can i export the existing E4 ECU rom and import to E7 ECU, or change the injectors and CAM from E7 Engine with Ralliart E7 Rom?

Thank you for your opinions and advices.

Regards,
Cris

HI Cris

I would recomend flashing the trephra modded 9055001 to your ECU, after backing up the ROM on it. There are a couple of threads here and several at www.lancerregister.com about using a VII ECU on the early evos. Go there and do a search.

MB

im running my 4 on 7 ecu for the past yr or more , using ra rom 90550001

rad and ac fan wires need to be changed

you need to make a few pin changes in the ecu plugs
take out pin 20 and put it into 32
take out pin 21 and put it into 34
32 and 34 have no pins in the plug on 4 ecu

you also need a pin to go into 79 and run a wire from this to the white init socket on ecuflash cable to flash ecu.
theres are two evo 7 ecu,s if its the later one part no starting with MN you need to swap pins 8 and 22 ,thats fuel pump and a/c comp relay.
you need to disable the front o2 heater circuit in the rom periphery or wire a 4 wire o2 sensor to your car, if you wire in a 4 wire sensor you need switched 12v to one heater wire and the other heater circuit wire goes to pin 60 again the evo4 doesnt have a pin in the plug as the 4 uses a 2 wire sensor with no heater.

use evo5/6/7 560 cc injectors and the 4 maf sensor then you shouldnt have to play with inj or maf scaling ,, you could swap the cams for evo 5/6/7 ones but its not essential,,i wouldnt run more than 1.2/1.3 bar boost on evo4 std internals


if you send me an e-mail addy i can send you the std ra rom ready to go,but you will HAVE to tune it .