bme

Just bought an Evo VIII and thinking of installing a Ralliart Sports ECU. Can anybody tell me what the power gains might be and if I would need to upgrade other parts of the engine to accomodate the increase in power

Thanks

Mister2zx3

Who are you going to buy a "Ralliart Sports ECU" from? I have not heard of this.

boostedwrx

iTrader: (27)

Do you live in the US? If so, there is not one available yet for it.

evofan@scorp's

iTrader: (5)

If it is the JDM ECU it will not work, it is programed to work with AYC and ACD.

Secret Chimp

iTrader: (2)

If you live in the US, and get your hands on a Ralliart ECU from somewhere outside the US, it won't work on your car. The US Evo VIII has a different plug set up on the ECU than the rest of the world.

SC~

bme

Sourced the Ralliart ECU from the Japanese and German Ralliart sites. Can be bought in most Asian and European countries. Also, just spoke to my mechanic on the phone, he mentioned a power increase of around 10 - 20 horses. Wanted to varify these figures...

BTW, what other performance ECU's are out there for the EVO VIII that's worth exploring?

mitsuorder

iTrader: (106)

dynoflash is a reflash, xede is a piggy back of sort, works rally reflash, upcoming x-flash, upcoming utec piggy back of sort, many options, many satisfied customers.

bme

Bought a Jap spec EVO VIII and I live in Malaysia. BTW, when installing aftermarket ECU's, do the ECU's set-up the car accordingly (i.e. fuel intake, air, etc) or does one need to modify other parts of the engine to accomodate for the increase in bhp

Yojimbo

iTrader: (1)

I'm not saying that this isn't a good site, but you might be better off checking with the guys on the MLR boards since they would have cars with the same or similar specs to yours.

raywong

The ECU and ACD are 2 seperate black box in the JDM EVO 7/8. There are a few aftermarket ECU and ACD, Ralliart, Tomei, Mines... the ECUs suppose to increase power, remove the 180 km/h speed limit, raise the rev limited.
I tried Ralliart and Tomei on my Evo 7. The Tomei is more powerful and more responsive but poorer fuel economy.
I wonder a ECU reflash can do the same.

tanders

I have the Ralliart Sports ECU installed in my 7. Based on the dyno, it gained about 10-15 hp at the wheels compared to the stock ECU. I think it is mapped for 100 octane gas that's why it is not producing much gains.

You can hardly feel any improvement in power, except that the engine runs smoother.

I suggest you get a programmable ECU like HKS F-Con V Pro or Motec or Autronics. There are a lot of those in Malaysia. Here in the Philippines, no one knows how to bypass the immobilizer in the ECU so I was forced to get the Ralliart ECU which also has the immobilizer like the stock. To make it programmable, what I intend to do is get a piggy-back ECU like Greddy E-Manage and adapt it to the Ralliart ECU. But if you don't want a programmable one, the best I think is Mines. It will work well with your evo since it's RHD (same specs as those in Japan).

bme

Thanks Tanders, appreciate the feedback.

3zero7

Re-openning a 6year old thread....

I was wondering whether the Ralliart ECU can be reflashed? I heard that it has more parameters to be set?

Appreciate if someone can shed some light on this.

andrewzaragoza

iTrader: (6)

maybe.. but why spend money to get a ralliart ecu when you can reflash your stock ecu and make it gain much more than what the ralliart ecu can give.

Kracka

iTrader: (49)

OpenECU/ECUFlash; its free and has a lot of potential and flexibility. No reason to pay for some expensive ECU when you stock one is just as capable in the hands of a competent tuner!