I recently sold my Ralliart Magna and i kept the ECU with a reflash on it that just totally transformed the car.

That car was a Series 2 TJ which started life as a 5 Speed auto but became manual.

I now have a TJ Series VRX which is also a Series 2 and also a 5 Speed Auto.

My question is, can i use the reflased Ralliart ECU in my VRX or can it only be used in a Ralliart ?

No, it won't work, you need to send it to me. :-)

Seriously if it has been unlocked, then it should work fine.

Thanks for the reply.

I was just concerned the ratio's would unsuitable for a non-Ralliart engine and would cause damage to the engine.

I really would like to use it as the reflash was expensive and made a huge difference to the pwoer of the car.

The Ralliart auto ECUs have different gearbox calibration than the standard VRX auto ECUs (even though the gearboxes appear to have been the same) to account for the different engine response and also target market. The auto mode shift points in particular are different and I'm pretty sure that the torque converter lockup settings are different too, however this will only change the gearbox operation a bit rather than be incompatible.

I'd be more concerned whether the reflashed engine tuning is totally compatible with the engine in the new car.

That's my concern too if anyone can clarify

Dan it wont work, you risk your engine pinging as we dont know how agressive the tune is.

Advanced spark of ralliart will not be a problem on standard 6g74, since compression is lower it will not ping.

If a reallyart motor was ok a std one will be fine by a country mile given has less comp

If it was a standard ralliart ecu it would be fine but its not so dont use it so your car doesnt blow up.

Plug it in.. Start her up then see how you feel.

You'll be fine.. Just enjoy it!

SuFz :ninja:

If it was a standard ralliart ecu it would be fine but its not so dont use it so your car doesnt blow up.

The car will literally blow up, just like in the action films? I say do it and put it on YouTube.

Tune won't do shit to a normal car, unless you're living in Hayden's action flick world.

I'm more confused than a fat kid in a fruit store !!

So, the ECU will be safe to use, won't blow my engine, may affect the shift patterns of the auto but will provide gains ?

I'm more confused than a fat kid in a fruit store !!

So, the ECU will be safe to use, won't blow my engine, may affect the shift patterns of the auto but will provide gains ?

Cant promise gains as you haven't got the ralliart cams and compression etc.

I'd get it in and then give it a dyno run to confirm whether you are or aren't gaining.. 74s are cheap nowadays anyway..

SuFz :ninja:

If it was a standard ralliart ecu it would be fine but its not so dont use it so your car doesnt blow up.

Man what the hell are you saying? No matter how agressive tune was it will always be fine on a standard motor given you will run it on fuel it was tuned for.

its not a boosted car, it May or May not be better but certainly wont blow ur car up.....

Thanks for the responses.

I guess the best way to do this will be to dyno the car with the standard computer and then switch ECU's and dyno again.

Results will be interesting.

Man what the hell are you saying? No matter how agressive tune was it will always be fine on a standard motor given you will run it on fuel it was tuned for.

Are you actually stupid or just uneducated? If it was as simple as every tune working on every car everyone would just flash eachothers tunes. This is a 98 tune for a 6g74 with different cams, heads, pistons and exhaust, i dont see how that is remotely safe to run.

Hahahaha wow, people like you actually give advices, well done your just showed your complete ignorance..

Please do explain how exactly tune on a car which has cams and exhaust will damage the same engine but unmodified?

To answer this for you, it NEVER will, you simply don't understand they way spark advance works on NA motors.

Reason why people dont use tuned ecus on engines with different mods is because you may loose performance....

Damage is only possible if you are using ecu tuned for NA on forced induction setup.

Do everyone a favour and keep it to yourself....

Because you got this tune done lol. Yes dan put it on your car. Ping away

Because you got this tune done lol. Yes dan put it on your car. Ping away

Ill repeat my previous statement, please do explain?

If the car indeed had higher cr pistons as you claim, that would mean on standard motor it will be way to concervative, meaning there is no way in hell it will knock, ever.

All you have to do is run it on fuel it was tuned for...

Are you actually stupid or just uneducated? If it was as simple as every tune working on every car everyone would just flash eachothers tunes. This is a 98 tune for a 6g74 with different cams, heads, pistons and exhaust, i dont see how that is remotely safe to run.

Hayden, as much as you are trying to help out, sometimes it's best to pipe up when you aren't quite sure yourself. Going from your two build threads and your posted thread history you haven't had much if not any experiance at all in tuning and/or reflashing, yet alone anything as significant as changing out major compenents yourself. No doubt you've heard of SKR and his mail order tunes... It almost is as simple as one tune working on everyone else's car.

Install it in the car and get back to back dynos to see if there is any gains to be made you never know the outcome unless you try it out

Install it in the car and get back to back dynos to see if there is any gains to be made you never know the outcome unless you try it out

I have some time off in a couple of weeks so i think this will be the best course of action.

You guys shouldnt get tunes dont in future, just flash everyone elses

Dont get me wrong, i do understand where you are coming from now. Makes sense.

I don't know what I'm talking about so I'm not going to tell you what will happen.

Most say it won't gain anything but may shift differently. I really don't see the point of putting it in if there is no gain and possibility of the car being less nicer to drive. :confused:

Assuming this tune on this ecu has been done on a Dyno this means its maxxed out for the engine that it was tunned to so every engine is different so it wouldn't be safe to put in. But if Skr did it would be more of a better idea to fit cause his tunes are safe tunes.