Parso
13-02-2011, 12:30 AM
This is one of the mk4 GTI's we are starting to see and it has a few mods too. A larger FMIC, K03S turbo, bigger injectors (not telling what size :) ), Cold air intake and a few nice mechanicals to go with it. We didn't do the mechanical work on the car but it was sent to us to remap via another workshop since the earlier aftermarket tune was running very lean plus the owner wanted a bit more go and also the potential for even more in the future.
http://recode.net.au/images/VW/Mk4_GTI/IMG_0838.jpg
Standard power on these on our dyno is around 80~85kW at the wheels which backs up the claimed engine power of 110kW's.
The ECU has to come out on and the modification to the board commences. Similar to my own A3 shown here
http://www.recode.net.au/images/A3/IMG_3404.jpg
http://www.recode.net.au/images/A3/IMG_3406.jpg
Chip desoldered and board cleaned up ready for modified replacement chip or bare socket
http://www.recode.net.au/images/A3/IMG_3407.jpg
We have to desolder this beast from the mainboard, its not a lot of fun but like everything its easier if you have the proper gear
http://www.recode.net.au/images/A3/IMG_3408.jpg
http://www.recode.net.au/images/A3/Chip/IMG_3468.jpg
Chip in the eeprom programmer ready to be read or written with the on-site modified data ;)
http://www.recode.net.au/images/A3/Chip/IMG_3469.jpg
Solder the programmed chip back in or perhaps use a socket, it depends what we need to do. The example here (an A3 1.8T) has no socket obviously. In cars like this GTI many modifications to the maps are required and each time we need to remove the chip from the ECU, reprogram it then place it back in the car and test again and again until it right
Dyno time !
http://recode.net.au/images/VW/Mk4_GTI/Mk4_GTI_power_overlay1.jpg
Boost falls off so fast with these tiny snails and the two lines show the difference between two tunes, the top one has a wastegate mod and 1 degree or so of extra timing for example.
I'll finish this soon
http://recode.net.au/images/VW/Mk4_GTI/IMG_0838.jpg
Standard power on these on our dyno is around 80~85kW at the wheels which backs up the claimed engine power of 110kW's.
The ECU has to come out on and the modification to the board commences. Similar to my own A3 shown here
http://www.recode.net.au/images/A3/IMG_3404.jpg
http://www.recode.net.au/images/A3/IMG_3406.jpg
Chip desoldered and board cleaned up ready for modified replacement chip or bare socket
http://www.recode.net.au/images/A3/IMG_3407.jpg
We have to desolder this beast from the mainboard, its not a lot of fun but like everything its easier if you have the proper gear
http://www.recode.net.au/images/A3/IMG_3408.jpg
http://www.recode.net.au/images/A3/Chip/IMG_3468.jpg
Chip in the eeprom programmer ready to be read or written with the on-site modified data ;)
http://www.recode.net.au/images/A3/Chip/IMG_3469.jpg
Solder the programmed chip back in or perhaps use a socket, it depends what we need to do. The example here (an A3 1.8T) has no socket obviously. In cars like this GTI many modifications to the maps are required and each time we need to remove the chip from the ECU, reprogram it then place it back in the car and test again and again until it right
Dyno time !
http://recode.net.au/images/VW/Mk4_GTI/Mk4_GTI_power_overlay1.jpg
Boost falls off so fast with these tiny snails and the two lines show the difference between two tunes, the top one has a wastegate mod and 1 degree or so of extra timing for example.
I'll finish this soon