r32 gtr jap ecu vs. r32 gtr oz ecu

[jazree]

HI guys,

i just want to know if it's ok to use the oz spec r32 gtr ecu with an jap spec r32gtr? the current jap spec ecu is running rich and cant afford a power fc at the moment..

thanks..

[djhatton]

yes its fine to run an aussie spec computer (you only really need the chip inside it). pfcs are like a thousand bux, you can install it yourself and getting your beastie tuned realtime on the dyno makes a lot more sense!

d

[jazree]

thanks dj,

yup, planning to buy pfc when the money comes in..as for now..just need something to run not to rich..when i floor it..to much black smoke...any idea's if i would lose any power with the oz spec gtr ecu?

[Duncan]

I'm not sure why changing a standard ECU for a standard ECU would make it run less rich? What is the real problem?

[lwells]

If you're on a tight budget, a rechip of the standard ECU is probably your cheapest (not necessarily best) option.

Even if there was a difference, I imagine most AU GT-R owners will want to hold on to their for resale values reasons anyway.

LW.

[GTR32]

I don't think either standard ecu should affect the amount of black smoke the thing produces so that you can see it under accel. a visible amount of black smoke means it's running way rich, richer than a really rich standard ecu should affect richness.

it's all a bit rich, if you know what i mean.

what Duncan said.

[TTT]

SAFC would be cheaper than all those options.

temporary fix.

then sell it once the power fc is in

[jazree]

I don't think either standard ecu should affect the amount of black smoke the thing produces so that you can see it under accel. a visible amount of black smoke means it's running way rich, richer than a really rich standard ecu should affect richness. 

it's all a bit rich, if you know what i mean. 

what Duncan said.

so a bit rich is allrite? newbie here..

[lwells]

I don't think either standard ecu should affect the amount of black smoke the thing produces so that you can see it under accel. a visible amount of black smoke means it's running way rich, richer than a really rich standard ecu should affect richness.

The stock ECU + dead O2 sensors = super rich running, so its not completely impossible.

LW.

[djhatton]

no a rich tune won't "damage" anything. its unsightly, and is no good for power, but at least your beast wont lean out and ping!!

i agree with the s-afc route. if you've gotta "bandaid" it until you can go programmable management, the safc makes sense. just sell it on when you do get the pfc.

[rev210]

The Aussie ecu's were re-programed as the maps given to the factory jap GTR's (this is where the australian ones were built and where the ecu's actually come from too) ran too much ignition advance for the lower octane fuels here (back then only 96 octane max), the jap fuels are also higher in benzene based additives that act as octane boosters and require a richer air to fuel ratio. Oh and while they were at it they removed the speed restrictor.