2zz-ge Ecu

[everts05]

Hey,

I own a 2005 Corolla XRS. As most of your know, it shares the 2ZZ-GE engine with the Celica GTS and Matrix XRS. Though it shares the same engine, the preformance between each of these cars is quite different. I want mine to perform as the Celica GTS does. The Celica has 180hp and 133 pounds of torque but not only that, the variable valve timing kicks in at 5500 rpm where mine kicks in at 7000. Now I believe that the difference in the two engines is the programming of the ECU.

My question is, has anyone swaped or reprogrammed the Corolla ECU with the Celica ECU? Or if it is not the ECU, has anyone got their XRS to perform like the Celica without all the added aftermarket parts.

Thanks,
Everts05

[Exage]

Sorry everts, looks like a no. 2ZZ-GE Ecu's

You would have to get a Apexi Power FC, Hydra EMS or something similar.

[silver04rollas]

Originally Posted by everts05

Hey,

I own a 2005 Corolla XRS. As most of your know, it shares the 2ZZ-GE engine with the Celica GTS and Matrix XRS. Though it shares the same engine, the preformance between each of these cars is quite different. I want mine to perform as the Celica GTS does. The Celica has 180hp and 133 pounds of torque but not only that, the variable valve timing kicks in at 5500 rpm where mine kicks in at 7000. Now I believe that the difference in the two engines is the programming of the ECU.

My question is, has anyone swaped or reprogrammed the Corolla ECU with the Celica ECU? Or if it is not the ECU, has anyone got their XRS to perform like the Celica without all the added aftermarket parts.

Thanks,
Everts05

To answer your questions, regardless of marketing campaign, Celica GTS makes as much power and torque to the wheels as Corolla XRS does. That is what all dynos show consistently. With intake/exhaust on, several Corolla XRS dyno'ed higher than Celica GTS with exact same mods (mileage might be the reason).

Secondly, no VVT-i does not kick in since VVT is continuous and found on every toyota. It is lift ('L' part of VVTL-i) that switches at 6600 rpm and not 7000 rpm for Corolla XRS. The Celica GTS have lift engagement at 6200 rpm (2003+ had it engaging at 6400 rpm).

If you want to tune VVT and 'lift', you would need a stand alone computer like Hydra EMS or Apexi PFC to tune both VVT and lift since the Celica GTS ECU is not swappable into Corolla XRS as the pinouts are different.

[booya56]

well it could be in the head along with the ecu if u want it have it peform a little bet better u would want to put a peformance chip in it aka twostep but make sure u get somebody that knows how to sotter

[silver04rollas]

Originally Posted by booya56

well it could be in the head along with the ecu if u want it have it peform a little bet better u would want to put a peformance chip in it aka twostep but make sure u get somebody that knows how to sotter

They all have the same engine code. There is no mechanical difference between any 2ZZ-GE engine variants so no there is nothing different about the head. All of their parts are completely swappable (aside from intake and exhaust). Like I stated above, only difference is in ECU and only where lift engages and the torque curve.

They all make roughly the same HP with intake/exhaust of 165 - 170 whp at the dyno when put side by side (yes, it has been tested several times). Some Corolla XRS actually dyno'ed higher than Celica GTS at the same dyno on the same day.