Tiguan IS38 and Big turbo upgrades

[Melbourne_Tiggy]

Hi All, I’ve taken much of my inspiration from this forum over many months, so thought with this thread I’d finally share the work I’ve done (so far) to my MY18 Tiguan;

- APR Stage 2 Tune
- APR AWD Cast Downpipe
- CTS Turbo Inlet Pipe
- CTS Turbo Muffler Delete
- K&N Air Filter & Snow Grate Removed
- ECS Silicone Inlet Hose & Airbox Mod
- ECS Subframe Mount (Dog Bone)
- GFB DV+ (Diverter Valve)
- Forge Motorsports Turbo Blanket

Have also done my own personalisations via OBD11 and professionally upgraded the speakers to Morel Splits (F&R) with a DB Euphoria Sub for extra ‘doof-doof’...

Brutal performance with a soundtrack to match! ... Next stage, an IS38 Upgrade with a TCU Tune and APR Exhaust Crackle! 🤙

Hi Azza, congrats on your mods! Keep us posted on how the turbo blanket goes, I think that’s a first for most of us. Looking forward to hearing your reviews of the IS38 and TCU tunes.

[Melbourne_Tiggy]

Hi all,

I’ve had a CEL on an off for a little while that may be tune related. A ticket has been raised with APR support USA to investigate. In the meantime I’ve flashed back to the standard APR IS38 v1.1 tune without pops and bangs.

I was interested to see whether there was any noticeable performance difference. My bum dyno said no, however I had a chance to do a vbox run on Friday night and I was pleasantly surprised that I vboxed 4.2s 0-100km/h. This is a 0.1s improvement on my previous best of 4.3s.

I will keep everyone posted on how this tune goes and if APR support provides an update.

[TheTig]

Hi all,

I’ve had a CEL on an off for a little while that may be tune related. A ticket has been raised with APR support USA to investigate. In the meantime I’ve flashed back to the standard APR IS38 v1.1 tune without pops and bangs.

I was interested to see whether there was any noticeable performance difference. My bum dyno said no, however I had a chance to do a vbox run on Friday night and I was pleasantly surprised that I vboxed 4.2s 0-100km/h. This is a 0.1s improvement on my previous best of 4.3s.

I will keep everyone posted on how this tune goes and if APR support provides an update.

That's probably why I haven't been able to get my hands on that tune... FWIW not a single CEL on mine it's going great!

[INASNT]

Hi all,

I’ve had a CEL on an off for a little while that may be tune related. A ticket has been raised with APR support USA to investigate. In the meantime I’ve flashed back to the standard APR IS38 v1.1 tune without pops and bangs.

I was interested to see whether there was any noticeable performance difference. My bum dyno said no, however I had a chance to do a vbox run on Friday night and I was pleasantly surprised that I vboxed 4.2s 0-100km/h. This is a 0.1s improvement on my previous best of 4.3s.

I will keep everyone posted on how this tune goes and if APR support provides an update.

Are you using a 02 sensor spacer?

I am still having CEL issues with my Stage 2 with spacer. CEL goes off then come back on after a few days, getting a new file tomorrow to see if its finally fixes it.

[Melbourne_Tiggy]

Are you using a 02 sensor spacer?

I am still having CEL issues with my Stage 2 with spacer. CEL goes off then come back on after a few days, getting a new file tomorrow to see if its finally fixes it.

Yeap, I’ve installed a Vibrant J spacer. This is meant to deal with the Cat efficiency CEL. The other CEL is related to O2 running lean, which I believe is tune related. Since flashing to the new tune, it’s been quite stable.

[Melbourne_Tiggy]

That's probably why I haven't been able to get my hands on that tune... FWIW not a single CEL on mine it's going great!

Great to hear, so far so good for me also with the standard is38 tune...

[INASNT]

Yeap, I’ve installed a Vibrant J spacer. This is meant to deal with the Cat efficiency CEL. The other CEL is related to O2 running lean, which I believe is tune related. Since flashing to the new tune, it’s been quite stable.

I have had both CEL error also.. Seems there are some code differences / slightly different ecu with the MK7 GTI as they dont seem to have the issue.

[Melbourne_Tiggy]

Are you using a 02 sensor spacer?

I am still having CEL issues with my Stage 2 with spacer. CEL goes off then come back on after a few days, getting a new file tomorrow to see if its finally fixes it.

Hey Inasnt, how did you go with the retune ?

[INASNT]

Tuner O/S on holidays atm, doing next Tuesday. Usually takes 3-4 days for CEL to reappear if it wishes to reappear

[INASNT]

So my CEL decided to go off by itself again yesterday....

Watched this video last night of a turbo modification factory in Germany, lots of Golf MK7 turbos in their factory for rebuilts and upgrades. Mentioned TT500 turbo for the MK7 which they are working on.