Turbo system

[DTM_Yaris]

Originally Posted by 03Z33

Techtom do list the NCP91 ECU as one that's compatible with their reprogramming tool. TRD also offer different variations for the Japan and Asian market Vitz Cup teams as well as for the OEM Toyota turbo models found in those markets.

I'm confident there will be reflash options for our stock ECU more readily available at some point. The main delay would be lack of a market/demand not complexity since many US based tuners have already proven that Canbus and other complexities in newer ECUs are only small hurdles in cracking and reprogramming the code.

I spoke with Tadashi personally, he has no will to mess with 2000+ toyota ecu's. Now if the supra comes out next year then maybe he will reconcider.

If TRD comes out with a supercharger or turbo option then a TRD reflash will help eliminate the barriers.
I hope that happens soon.
Unitl then AEM will have a unit out within months for many 4cyl. toyotas.
I agree however that demand holds back the tehnology not the CANBUS.
Just that at the present time no one has any tool available that will work with this particular ecu.

[punch]

Originally Posted by DTM_Yaris

Yaris automatic trans will take up to 190FTLBS of torque. Above that it will depend on the abuse it will take daily.

may I ask how you know this?

[DTM_Yaris]

Originally Posted by punch

may I ask how you know this?

We have been building a Time Attack Yaris. We originally wanted to go with an Auto. After sending the internals to one of our sponsors they came to the conclusion that it was limited to approx 190 Ftlbs.
We chose to go with the manual and cryo.

[spkrman]

Originally Posted by DTM_Yaris

Yaris automatic trans will take up to 190FTLBS of torque. Above that it will depend on the abuse it will take daily.

good to know :)

[punch]

Originally Posted by acrbill

Don't you have an automatic? I highly doubt a transmission built to propel a 106HP 2300# car will take the extra power and torque.

I know what thats all about : )

[itsme]

how would the turbo charger effect the ecu heat wise? since the ecu is sitting in the engine bay like right above the headers (somewhat)

[largeorangefont]

Originally Posted by itsme

how would the turbo charger effect the ecu heat wise? since the ecu is sitting in the engine bay like right above the headers (somewhat)

I would build a heatshield arouund the ECU, and get all the hotside parts thermal coated.

[calmcool]

Spkrman, How much horsepower do you have in your car? Do you know automatic trans don't pick up torque ! but it suck the power!

[eTiMaGo]

while we're on the subject...

From what I understand, when running a turbo, it is preferred as a basic tweak to richen the air-fuel mixture in order to reduce knocking.

Seeing as this ECU is so far quite hard to trick, would it stand to reason that a workaround, (when working with a low-boost turbo anyway), could be the usage of a higher octane fuel?

[largeorangefont]

Originally Posted by eTiMaGo

while we're on the subject...

From what I understand, when running a turbo, it is preferred as a basic tweak to richen the air-fuel mixture in order to reduce knocking.

Seeing as this ECU is so far quite hard to trick, would it stand to reason that a workaround, (when working with a low-boost turbo anyway), could be the usage of a higher octane fuel?

No, unless you want to run C16 all the time, and there is still risks doing that. The car needs to be tuned for the turbo. Unfortunately c16 will kill the 02 sensors in short order.

You want to run around 11:1 AFR under open loop conditions. The car as stock is probably close to 13:1. Youll burn the motor down in short order without a tune.