TD05 installed in our Dec 96 WRX wagon successfully but apparently our ECU is the newer 97/98 model and therefore difficult to remap. Any suggestions appreciated. Not too bothered about maximum power, I'll be quite happy just to get the thing running well.

 

Yeah just to clarify...

I got the ecu and turns out that the car is 96, but the ecu has three plugs so is 97 - 98 = no remap..

Suggestions??

Electronic boost controller??

David

 

Dec 96 cars generally are MY97 IMHO !

What is it doing with the TD05 front entry on it ? overboosting ? underboosting ?

Andy

 

Havent run it yet, thought it was best to do the ECU at the same time to avoid complications

 

And the ecu is on my desk next to me.. about to go to the post office...

David

 

Whats the likely result of running it with the existing ECU? I presume they can compensate a bit?

 

The air flow meter will allow the ecu to compensate for the extra flow so the mixture will 'most probably' be ok. The td05 is more efficient at higher rpm so ignition advance 'should' not be an issue.
The only problem will be that you will still run standard boost unless you fit a Dawes valve or similar to control boost.
I would recommend fitting an uprated fuel pump before you increase the boost pressure though !

 

Ecu on its way before 12 tomorrow.

David

 

Thanks David. So Andy, are you saying that on the balance of probability it will run Ok with the standard ECU and have approximately the same BHP as with the TD04 but if we wanted to increase the BHP we would need this Dawes valve or similar and an uprated pump.If thats the case, I'll probably leave it as it is as I'm planning to sell it soon to make way for an STI. From there it should be an easy tune for someone else maybe.

 

dawes valve set to 1 bar should be a good start.

still more power than td04 at 1.3bar

 

thanks, I'll look into it.