HELP ECU

[tiburshok]

Hi, I would like to know if this ecu eprom MD312467 can be a replacement to my current ecu MD128618? will it be bolt on? sorry im noob /ubbthreads/images/graemlins/smile.gif

 

[fuel]

Nope not going to work.

MD312467 is from the N23W RVR 5M/T with the 7-bolt 4G63, 510cc injectors, big16g turbo, separate cam/crank triggers and no Cyclone inlet manifold actuation. It is more similar to the Lancer Evo1-3 ECU

MD128618 is from the pre-facelift JDM E38A/E39A VR-4 with 6-bolt 4G63, Cyclone actuation, 450cc injectors and 14b turbo.

Not only are the pin-outs incorrect, but the fuel maps will be different and you wont be able to control the Cyclone inlet manifold.

 

[thomcasey]

^^^ If you have an evo 1-3 you can make it work, but not a 6g vr4.

RVR ECU

edit: posted before I read deeper. corrected.

 

[fuel]

^^^ Nope nope nope.

Early turbo RVRs ran the Evo1-3 7-bolt engine with Evo style AFM and the same CAS as GVR-4 and Evo1-3 but with 450cc injectors for both auto and manual models. The ECU pin-out is the same as Lancer Evo1-3 but wont work with E38A/E39A Galant.

The later N23W turbo RVR Hyper Sports Gear which this ECU in question is from runs the 510cc injectors and late 2G T/E/L style cam/crank sensor pickup.

 

[Mr_Fielgood]

Damn fuel knows his sh*t. /ubbthreads/images/graemlins/worthy.gif

 

[tiburshok]

Thanks for the reply guys.. would it be hard to rewire this ecu to replace my current ecu?like converting evo3 ecu to 1g?my plan was to tune my engine so i can upgrade it. Or should i abandon this rvr ecu and look for less complicated way.

 

[fuel]

It's too much hassle for what it's worth. The RVR/Evo1-3 ECU has the same processor speed and relatively low-res fuel/ignition map scale and will not control your Cyclone inlet manifold. If you are going to rewire for another ECU, you may as well fit an Evo7/8 ECU instead which is much more modern with a high res fuel/ignition map scale and faster processor, not to mention you can re-flash and tune much easier with EvoScan. Have a look in the how-to section on how to convert to Evo7/8 ECU. You will have to do something about the Cyclone however with the Evo 7/8 ECU you could re-configure one of the outputs (ie stock boost control solenoid or stock EVAP solenoid) to trigger the Cyclone instead, or failing that use an aftermarket RPM based controller switch. I will eventually be doing this very conversion to my JDM VR-4.

 

[tiburshok]

Nice that clears a lot, i think i will follow your post sir fuel incase you document your conversion of your jdm vr4. Time for me to look for evo 8 ecu /ubbthreads/images/graemlins/smile.gif /ubbthreads/images/graemlins/smile.gif

 

[r4pt0x]

Quoting fuel:
[...]If you are going to rewire for another ECU, you may as well fit an Evo7/8 ECU instead which is much more modern with a high res fuel/ignition map scale and faster processor, not to mention you can re-flash and tune much easier with EvoScan.[...]



That's exactly what I would have suggested. I'm also using an Evo7/8 ECU on an VR4 block with 4G67 head (for higher compression), VR4 camshafts, Evo3 16G, Evo4 MAF and Evo9 Injectors - despite being a total bastard and having no more balance shafts, the Engine runs smoother than any other old 4G63 i've ever seen before. 750-800 rpm idle without any hickups and power/torque is awesome with positive pressure right from ~1800rpm and >1bar under 3000rpm (running with 1.4-1.5 bar hold).
You can even actuate the cyclone with the evo 7/8 ECU by using the "fuel pump hi" output which is triggered by a given load point which is also the more accurate way than rpm (ecu load is directly linked to airflow which is what we want to control/optimize with the cyclone...)

 

[prove_it]

How many outputs can you control with an Evo ECU? I love my Link V3 but having 2 output controls kinda sucks.