Different T25 ecu's

[Mr.Ford]

Hi people,

I was wondering what is the difference between the ecu's from the T25 small turbo cosworth's.

Anti / Cosy / Card and i believe another one.

Are one of them better then the other ones (less faulty)? Can you switch them between cars (like EsCos with Anti ecu to fit an Cosy ecu)?

Thanks!

Regards
Bjorn

[jsa]

Oldest to newest;
CARD QUIK COSY ANTI

CARD and QUICK are the same hardware and pinout, but different to COSY and ANTI which both use another hardware version and pinout.

All 4 are the same software strategy which is GHAJ0. The diffences are minor tweaks and minor fixes. Any of the 4 software versions can be run on any other version.

Best to explain what you want to do.

[Mr.Ford]

Thanks John, I do have 2 ECU's at home. One is a CARD and one is a COSY. The COSY does have a chip, i was wondering if i could plug the ecu in the Cosworth which had the CARD ecu. Or if it's possible to put the Chip (piggy back module) from the COSY into the CARD ecu?

Are the ANTI ecu's better (hardware) then the Card for example?

[jsa]

No to the ecu swap, the pinout is different.
Yes the chip can go in either.

The hardware changes are for vehicle security, the engine control is equivalent so nothing to be gained.

[Santu]

John,

i remember you and bryndisi on another forum point out the differences in between the pinouts,
i guess somewhere in my hard drive i have it.

Remember that Bryndisi was able to gain something more than the standard set up with the chip. it's this still actual?
Or is better to swap to a racing ECU? what i am asking it's if worth to work over the original ECU raither than go to a racing one

[jsa]

Yes I have the pinout cheat sheet here. In any case the wiring schematics I have passed on to many here have the pinouts for both hardware versions.

Yes a chip or emulator can allow the EEC-IV ST produce a lot more than the urban myth maximum of 305hp.

Injectors are a big part of why racing ecu's became necessary for bigger hp. Peak and hold low impedance high flow injectors were needed, but now high impedance, high flow injectors with good min pulswidth are available.

For me for now, the eec is not the limit. The limit is the clutch and the whole drivetrain.

Cosworth used an EEC for F1 engines.

What do you want from your ECU. Is there something you think the EEC is missing?

[Santu]

Yes I have the pinout cheat sheet here. In any case the wiring schematics I have passed on to many here have the pinouts for both hardware versions.

Yes a chip or emulator can allow the EEC-IV ST produce a lot more than the urban myth maximum of 305hp.

Injectors are a big part of why racing ecu's became necessary for bigger hp. Peak and hold low impedance high flow injectors were needed, but now high impedance, high flow injectors with good min pulswidth are available.

For me for now, the eec is not the limit. The limit is the clutch and the whole drivetrain.

Cosworth used an EEC for F1 engines.

What do you want from your ECU. Is there something you think the EEC is missing?

I just wanted to understand the reason why a lot of car are swapping over the original set up with a racing ECU, at least from the preparation i am seeing in italy they go more on changing the ecu rather trying to tuning the EEC. As far as clutch and whole drivetrain now i should be god, as i am not running anymore the original one (i have a colussi's gearbox)

[Mr.Ford]

Thanks for the reply John.

Do you also know where the original Ford anti-start system is located. Is it possible to by-pass? It's not in the ECU of the car.

[jsa]

I just wanted to understand the reason why a lot of car are swapping over the original set up with a racing ECU, at least from the preparation i am seeing in italy they go more on changing the ecu rather trying to tuning the EEC. As far as clutch and whole drivetrain now i should be god, as i am not running anymore the original one (i have a colussi's gearbox)

The reason for changing I hear most, is that 305hp is the limit for the eec, but that is just not true.

It is really a question for the individual tuner why they swap out the eec. Anti lag would require less learning on a race ecu than on an EEC or Marreli, but it can be done on either.

What are your goals?

What spec is your Colussi box?

[jsa]

Thanks for the reply John.

Do you also know where the original Ford anti-start system is located. Is it possible to by-pass? It's not in the ECU of the car.

This part of the forum is open to the world to see, including thieving scum. By all means PM me, and I will talk about what little I know.

Why do you want to bypass it?

[Santu]

The reason for changing I hear most, is that 305hp is the limit for the eec, but that is just not true.

It is really a question for the individual tuner why they swap out the eec. Anti lag would require less learning on a race ecu than on an EEC or Marreli, but it can be done on either.

What are your goals?

What spec is your Colussi box?

well,

my goals is just being over the 300, i believe that for a mid-level driving is more than enough, i would rather play around the chassis brake & suspension than having thousands of horses.
My Colussi's box it's just the bigger tooth kit and shorther ratio, in highway now i am running around 3200rpm at 130Km/h. this because i also shortened the fifth gear, some of the guys i know here in italy are running with the fifth gear original 1-2-3 like my set up but then 4-5 aligned to be longer (similar to the original)

[jsa]

Over 300, no worries. Where is the engine tune at, at the moment?

I wish there were a synchro 6 speed with similar 1st and 6th ratio matching original 5th. Spread the rest and the oem 1-2 gap would be nicely filled. Use the double synchro's out of the last mt75 version and voila box is perfect.

[Santu]

Over 300, no worries. Where is the engine tune at, at the moment?

I wish there were a synchro 6 speed with similar 1st and 6th ratio matching original 5th. Spread the rest and the oem 1-2 gap would be nicely filled. Use the double synchro's out of the last mt75 version and voila box is perfect.

late reply, sorry John,
not yet tuned, also because i am trying to understand the better way to go with,

not in rush unfortunately as i work abroad from italy, so i need to sorted all the possibilities before to move forward, actually the idea is rather to find a comprehensive ecu aftermarket (this could allow in further steps later on) or to see if possible to tune the original ecu maybe with a similar turbo to the original garret T25 (don't know if could be done but for example a EFR6258) so trying to have a stock(ish) engine bay but running something more updated

for the gearbox, fully agree with you, so would give that mix for running on the highway at lower RPM, and at the same time enjoy the sprint in mountains.
at cruise speed of 130km/h I went from 2800ish RPM to 3200ish RPM, still being drivable but could be better

[jsa]

The EFR has T25 bolt pattern but the OEM T25 has T3 bolt pattern. Of couse bolt patterns can changed.

Pipes will change as well.

Just have to convince collossi to do a synchro version.

[midnight_man]

is no problem to change turbo....you will end at more complicated things then turbo