ECU reflash

[Buf-Phoon]

Hi Guys

My T is going in for a 30k service on Friday, as I have mods I am wondering as to whether I should instruct the dealer not to reflash the ECU with the latest version as I am not sure what a reflash would affect if anything.

Also .... noticed this morning a spot of what appeared to be pinkish looking liquid near the front wheel , powersteering fluid ??. Didn't get underneath for a squizz as was P#ssing down Sorry probably dumb questions

Thanks in advance

WT

[Ford_Power]

I would suggest against getting the reflash. The reflash may affect your base maps which will obviously alter your current tune - possibly detrimentally. If you have no problems with your T, tell them not to flash the PCM.

I just had my car go in for its 3000k service yesterday and I told the service manager NOT to flash the PCM, even IF there is a later calibration available.

The only reason you would want to get it flashed is if you are suffering with stalling/high fuel consumption/driveline shunt issues. Some people have reported more problems after getting the flash done then they had before.

Ross

[ducatijb]

I'm with Ford Power. ....if it ain't broke let Ford break it for you...

[dingah2]

The responses given to-date are fairly understandable considering the maount of adverse comment on past threads about bad experiences post-ECU reflash; however, once a piggyback ECU is spliced into the system, aren't the base maps only controlling start-up/idle, thus what else could be impacted?

Dingah

[tab]

Also .... noticed this morning a spot of what appeared to be pinkish looking liquid near the front wheel , powersteering fluid ??. Didn't get underneath for a squizz as was P#ssing down

Sounds a bit to me like transmission fluid - just had the same thing.

http://www.fordxr6turbo.com/forum/index.php?showtopic=12325

Is it dripping from behind the right hand side foglight?

Trent

[Buf-Phoon]

Also .... noticed this morning a spot of what appeared to be pinkish looking liquid near the front wheel , powersteering fluid ??. Didn't get underneath for a squizz as was P#ssing down

Sounds a bit to me like transmission fluid - just had the same thing.

http://www.fordxr6turbo.com/forum/index.php?showtopic=12325

Is it dripping from behind the right hand side foglight?

Trent

That the one Thanks for that.

Warranty .......now this will be interesting

[ducatijb]

I have a spare stock tranny cooler Jules if you need it...

[Ford_Power]

dingah2 Posted on Aug 18 2004, 12:52 PM

  The responses given to-date are fairly understandable considering the maount of adverse comment on past threads about bad experiences post-ECU reflash; however, once a piggyback ECU is spliced into the system, aren't the base maps only controlling start-up/idle, thus what else could be impacted?

The base maps are what the factory (Ford) has programmed into the PCM. Eg, if there was a driveline shunt issue at "3000rpm AND 50% throttle", and then Ford would revise the base map(s) to rectify this and this would be released in a new calibration version. The base maps control the engine over ALL operating parameters - RPM, TPS, ACT, ACT, MAP, etc etc

All the piggyback ECU does is "bend" the signals going to the PCM, but the PCM is still utilising the value in the base map for "3000rpm AND 50% throttle."

To cut a long story short, if the base map is altered with a re-flash, your tune WILL be altered too.

Ross

[ktford]

That the one Thanks for that.

Warranty .......now this will be interesting

Yes we'll be interested to see the outcome.

Scotty

[dingah2]

Thanks Ross that's VERY interesting.

In the light of your post please find time to take a look at the thread about wastegate opening on the APS forum, I'd am keen to know your thoughts on that issue as well.

Cheers,

Dingah