Gtr Running Standalone- Effects On Attessa?

[StavrosRB2630]

As per title really.

We got a RB26 to go in a R33GTR here, and its been bench dyno'd running Pectel T6 2000 managment and its now in the car, but not running as yet due to a few mods being done.

But what (if any) effects will not running the standard ECU and engine loom have on the 4wd system?

I thought it was a totally seperate entity with the ATTESSA ECU doing it all, so no effects when binning the standard ECU, but some say otherwise.

So whats the truth? And if there are changes, what mods needs to be done to make it work ok?

Cheers.

Stav

[PHATR32]

standalone fuel management? not bad way to spend 10 thousand dollars.......

[Gav]

There are shared sensor inputs or signals between the ATTESSA and ECU computers. I know for a fact that TPS is one such signal as I had some issues ATTESSA a while back when I was running a single throttle body.

Study the electrical line diagrams from the manual and you will see what I mean.

[StavrosRB2630]

TPS was one i imagined to be shared, but couldnt think of any others TBH.

[blind_elk]

ATTESSA needs a TPS signal, otherwise it goes into "error" mode.

Advanced Engine Management (Wolf 3D) has a "black box" add-on to provide the signal to the ATTESSA.

[T04GTR]

EASY MATE. the only wires needed to keep the atessa working is:

tacho (pin 7)

tps signal (pin 38)

need to splice this wire 56 (purple one) into pin 38 as most aftermarket ecus dont have a tps output for other things.

should take about 2 mins to do

cheeres :lol:

ps.. make sure you adjust the tps with the engine running to get .04 volts at the output (tps signal input) otherwise code 21 will pop up...

[StavrosRB2630]

T04GTR, thanks LOADS great info

[CruiseLiner]

off topic a little bit sorry, but does anyone know if u can hook up the front torque gauge from a gtr onto a stagea series 1 which i dont know if it has the pin out of the attessa ecu or not?

ive got the tps signal hooked up and the tacho so it should work as per normal without the engine ecu and using an autronics smc?

is their anyway of telling if its working correctly without the front torque gauge?

cheers

Brad