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TFSI Engine Conversion
Posted: Sat Jan 10, 2026 10:34 pm
by Jonbuildz
Evening people, hope everyone is well.
As some people will know I run a youtube channel and have well documented the CR140 and CR170 engine swap series, if you have not seen it go check them out @Jonbuildz on youtube.
However It's time to level up and complete a TFSI conversion and I will keep this thread active once achieved.
Re: TFSI Engine Conversion
Posted: Sat Jan 10, 2026 10:36 pm
by Jonbuildz
Video number one on the introduction has been completed and posted:
https://youtu.be/xQZ9Wlae9-s
Re: TFSI Engine Conversion
Posted: Thu Feb 05, 2026 6:07 am
by Jonbuildz
So before everyone thinks I’ve gave up on here (it’s all uploaded to my YouTube but I love a forum post ) let’s start to walk through the project.
Go and check out my YouTube channel @jonbuildz to follow along on weekly updates.
First day of picking up the audi a3 TFSI CADDY

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https://ibb.co/B2VfB9Wp
https://ibb.co/HTB8MpQG
https://ibb.co/m1ZNjk2
https://ibb.co/DPq0GJG9
Re: TFSI Engine Conversion
Posted: Thu Feb 05, 2026 6:17 am
by Jonbuildz
Re: TFSI Engine Conversion
Posted: Thu Feb 05, 2026 6:28 am
by Jonbuildz
Link to second video on the conversion
[youtube]
https://youtu.be/ErBg8Am9cpI?si=oFGSqYaEvGg3Bier[/youtube]
Re: TFSI Engine Conversion
Posted: Thu Feb 05, 2026 5:07 pm
by Flog_TSC
Enjoying the vids keep it up
Sent from my iPhone using Tapatalk
Re: TFSI Engine Conversion
Posted: Sat Feb 07, 2026 10:34 pm
by MK4
Good on you, looking to do this myself in the future best of luck

Re: TFSI Engine Conversion
Posted: Mon Feb 09, 2026 2:08 pm
by kobat79
Thanks for the vids and posts. Interesting to see the conversion being done.
Re: TFSI Engine Conversion
Posted: Fri Feb 13, 2026 10:01 am
by Kev10001
Following, keep up the good work…
Re: TFSI Engine Conversion
Posted: Sat Feb 21, 2026 3:50 pm
by uins
Enjoying the vids

Re: TFSI Engine Conversion
Posted: Sun May 17, 2026 4:39 pm
by Jonbuildz
The TFSI caddy is completed guys all uploaded, enjoy.
Re: TFSI Engine Conversion
Posted: Fri Jun 12, 2026 7:20 am
by bandito
any guidance with the wiring just got my mk5 gti going into a mk3 caddy. the original gti engine blew its top end. so previous owner put a mk2 leon in it. said the car ran but parked it and lost interest. abit skeptical taking on the wiring.