mk5 golf Tfsi GTI conversion

hi all im looking into getting a 5 door mk1 (my 1st golf). iv had many veedubs over the 7 years iv been driving like polos n lupos. im not shy of working on a car as by trade i am a vw technician so know my way around a car .

so this is my plan (over a few years):

im going all in stripped blasted any rust issues sorted. then wanted to go 2.0 Tfsi from mk5 gti inc air con traction abs ect. all axles beams ect blasted and powdercoated. 256mm front brake conversion g60 rear with aftermarket pedal box with built in master and servos.

so im thinking 1st thing to do is find a donor car (hopefully cheap around 2k) that say cat C/D rear end shunt or something like. keep all the bits i need sell the rest and buy my mk1 with the money i get back from part of the donor.

ok now i know there is an 'of the shelf mount kit for 20vT abf ect but i cnt seem to find many Tfsi builds in the uk …  so bit baffled atm on this subject.

also ecu wise i know im going to need to stay standard due to the fuel injection systems so where or who could decode it for me??

then theres the wiring issue ???? any input welcome

thanks guys

Hi josh,

seems you like a challenge then?!There's some good info on the qpeng website for a tfsi conversion.

The mk5 engine is a fair sized engine, so most convertions have binned the aircon etc to make sure it will fit in the engine bay.

would be great to see this happen. 

CrazyQuiffs have just done this conversion for a customer - give Rich a call and he will tell you the pitfalls - his uses Qpeng I believe

You will need deep pockets for this conversion m8,but on the up side will be a great conversion.

if you use EVERYTHING from the MK5 this actually makes it a bit easier to use the oem management, as from my research the ecu will winge if it cant talk to the other modules and so needs these functions coded out.

if you use qpeng or whatever then you'll not have to worry about this side of things, but then afaik you'll have to bin all the nice parts of the injection system and basically convert it back to a standard 20v lump, unless things have moved on recently.

if you decide to just go oem management without anything else the wiring is basically the same as with mk4 golf conversion, except the extra coding required to map out all the other module checks and so on, this is now pretty easy these days as the knowledge is out there. I've done 3 MK5 engine looms so far, if you like I'll dig out the details of the guiys so you can ask em direct what they needed to do to make the ecu happy

after a full 10hrs searching for donor cars info on the build ect the cost is looking too high to do this build (at the moment). my mates got a 2.9 vr6 mk3 golf i can have for £200 so looks like im sticking a blower on one of them for the time beeing.

absolutly gutted but a project car and savin for a wedding is a bad combo to do at same time haha

as i say its basiclaly same as mk4 golf, though i found out recently that not all mk5 ecu are the same
the ones ive done are the r32 ecu which have same plugs as the mk4 dbw, the tfsi has different plugs but the wiring is still the same just a case of match up where the pins come from.

the main hurdles are the VSS signal which comes from the clocks via can-bus, this i think may need coding out or you need a can-bus adaptor module.  plus the rev counter, on the r32 ecus i added the mk4 pin into the correct position and i believe that works ok, just need the usual rev counter adaptor as per mk4 ecu. the alternative I found out is an adaptor to convert the alternator signal:
http://www.clubgti.com/showthread.php?265211-Corrado-2-0-TSI-%28EA888-SWAP%29

Any update on this?

Not really no other than as i said turbod vr6 its now potentially being supered instead and 4motioned and also got a 400bhp Impreza power beetle conversion on go aswell

I am in the middle of a TFSI conversion, I must get a thread up here soon!

I will be needing help with the wiring!

Your welcome to hi-jac this thread if you want

Dirrt said

I am in the middle of a TFSI conversion, I must get a thread up here soon!

I will be needing help with the wiring!

 

Dirrt said

I am in the middle of a TFSI conversion, I must get a thread up here soon!

I will be needing help with the wiring!

Sounds awesome mate get some pics up