ECU chip

[dan23]

ok when i brought my car the guy i got it off said that the guy he brought it from had the ECU chipped but could prove it as had no paper work to say it was done, is there any way i can check myself?

[jonezee_ipswich]

I spose if you know what the chip looks like you could take the metal ecu cover off and have a look?
But appart from that mate i doubt it.
Unless he knows the company name, they might have a record of it being done?

[dan23]

the guy didnt now anything other than he got told it had been chipped up, tbh i dont even know where the ECU is on a mk2 golf 

[jonezee_ipswich]

lol I havnt looked either chap never needed to find it!
but to be honest it all seems a bit dubious!!! 

[dan23]

yeah know what you meaqn, but sometimes ppl do do these sorts of things and just dont look after recipts etc and it cant be prooved

[clipperjay]

ECU usually located under the plastic scuttle tray (where the wiper motor is located but facing left side) unless you know what your doing don't bother as you can short the ECU by accident if the wrong thing is touched or pulled.
If you must take it out disconnect the battery first.
unscrew the plastic bolt then it should just slid of two plastic brackets, remember to put back the scuttle if you plan on having it out for awhile, otherwise the ECU jack plug and power connectors (Two one black, one white) will get wet and then you will have problems!

[dan23]

cool thanks for the help

[cняis]

when/if you do finally get the ecu out and open her up, there are two printed circuit boards in there. the bottom board has the fuel map chip on it. there are two identically shaped chips on the lower board and if one has a "performance" or such like sticker on it then the standard one has been replaced. the chips look exactly like this:

http://cgi.ebay.co.uk/VW-GOLF-JETTA-MK2-8V-GTI-DIGIFANT-PERFORMANCE-CHIP-6HP_W0QQitemZ290218309938QQihZ019QQcategoryZ32094QQssPageNameZWDVWQQrdZ1QQcmdZViewItem

it could have had one of these fitted which uses a generic "performance" fuel map.

check this thread for more info http://www.golfgtiforum.co.uk/index.php?topic=81320.0

[dan23]

cheers for that mate, it sounds like if any that will be what it may well be as i do get very good MPG from my golf on long motorway trips, and it is really reposive when i put my foot down, my last mk2 gti was almost the same but this one feels like it pulls better, i guess another way to find out is get it RR'd yeah?

[cняis]

guess so! i would love to RR the daily at 235k miles but it might blow up!