Hello Everyone,

The budget is slowly shaping for the supercharging, however a very interesting problem has emerged:

Word is that the TJ's have one ECU for the engine & gearbox, no longer separate units!

See this article for details: CLICK HERE! (http://www.carsales.com.au/pls/carsales/!cs_content.research_specs?vehicle_code=20020723.0 7:57:47&sort_type=&current_rec=29&make_name=MITSUBISHI&model_name=MAGNA&year_min=2002&year_max=2004&cs_trans_id=1)

So how does an aftermarket ecu work with this setup?? Can piggybacks like the GReddy or more powerful versions work with supercharged setups and in conjunction with the OE ecu?

Help!

there are ways arround this problem, my understanding is they can put a complete ems (ie a wold 3d, haltec etc) in a kind of piggyback arrangement. pretty much all the outputs of the factory ecu (like injectors etc) and are connected to the new one leaving the important stuff (ie the data lines etc) connected to the standard ecu.

also im pretty sure the 3rd gens have an issue with the body controll module being security coded to the ecu, not sure on the specifics

Ill be supercharging my next Magna which will be another Ralliart.

I have contacted Unichip and they have told me that i can use the Unichip to control the Supercharger.

Nothing but good things to say anout Unichip, it did wonders for my last Ralliart and will work wonders again on the next one.

Ill be supercharging my next Magna which will be another Ralliart.

I have contacted Unichip and they have told me that i can use the Unichip to control the Supercharger.

Nothing but good things to say anout Unichip, it did wonders for my last Ralliart and will work wonders again on the next one.


have heard that the unichips go pretty well but the only downside is getting the dam things tuned, and the fact that you cant do it yourself, you have to take it to a unichip dealer. if you want a piggyback solution look into the emanage, alot better ecu in my opinion :D

but then again. if your going to all out and supercharge it, it would be half assed not to fit a full replacement ecu :nuts:

for peice of mind...

everyone bags unichip cos u cant update them yaself but in all honesty if u could update them yourself would you know how? probably not, and even if u did **** around with it u would probably get it all wrong and do long term damage

:stoopid:

got a unichip in my car. Have to say even if i did know how to adjust the settings myself i would still leave it to someone who does it for a living and knows what theyre doing.

I'll be due for a retune soon.. done a few mods. just 2 more to go and should have a new dyno printout :D

for peice of mind...

everyone bags unichip cos u cant update them yaself but in all honesty if u could update them yourself would you know how? probably not, and even if u did **** around with it u would probably get it all wrong and do long term damage

i was thinkin this too, just because ya get a hand controller or wat ever dont mean u know the rights setting to change it to :nuts:

One downside of the unichip versus, say, an e-manage, is that the e-manage has more adjustment points. All things being equal, a higher resolution means a more accurate and appropriate tune. But there probably isn't that much in it.

Does the unichip have connections and logic for boost controllers and pressure sensors and the like the way the e-manage does?

for peice of mind...

everyone bags unichip cos u cant update them yaself but in all honesty if u could update them yourself would you know how? probably not, and even if u did **** around with it u would probably get it all wrong and do long term damage Good Point!
:D

One downside of the unichip versus, say, an e-manage, is that the e-manage has more adjustment points. All things being equal, a higher resolution means a more accurate and appropriate tune. But there probably isn't that much in it.

Does the unichip have connections and logic for boost controllers and pressure sensors and the like the way the e-manage does?

doesnt a s/c's boost vary on the size of the pulleys, not a boost controller ??

doesnt a s/c's boost vary on the size of the pulleys, not a boost controller ??
yes the smaller the pulley the more boost you get .not to sure a can control the boost in a s/c like a turbo

I'll be due for a retune soon.. done a few mods. just 2 more to go and should have a new dyno printout :D

but i didnt think toy dinosaurs and blue lights made any extra hp gains....... :bowrofl: lol

j/k

yes the smaller the pulley the more boost you get .not to sure a can control the boost in a s/c like a turbo

This is true as you are varying the speed the sc spins. That is the smaller the pulley the more revs it willd do hence faster sc speed and more output pressure.

The Eatons (such as the MP90 I have my sights on) have bypass valves (or similar) which I am sure can be controlled and manipulated.

I have some sneaky ideas with a mappable ecu for $140 complete that can handle boost controllers and fuel map settings. Can also act a shiftkit. How good is that eh?!

doesnt a s/c's boost vary on the size of the pulleys, not a boost controller ??

Apparently, yes.. I was more comparing e-manage to unichip in terms of flexibility and potential, not specifically with regard to supercharging :D at least that's my story and I'm sticking to it.

I can get my hands on a VERY cheap Piggy back ECU with 128 adjustment points. It can run off the Air Flow Sensor and be programmed continually anytime, anywhere at your leasure. Best initially tuned on a dyno of course.

I was initially concerned that there'd be probs with the ECU and Gearbox, but a Piggyback off the AFS wont harm that. Then I discovered the O2 Sensor and ECU try to keep the mixture lean at 14.7:1 for maximum catylitic convertor efficiency.

So I was concerned that fooling the AFS readings to the ECU would cause the richer mixture to be detected by the O2Sensor and report to the ECU. The ECU would either try to lean the mixture out by reducing the duty cycle or worse: run open looped.

I get the impression that the piggy back units on the AFS are very effective and receive no interferance from the O2 Sensor.

Anyone with a Piggy Back unit that can vouch for this and to which signals it adjusts???