Tiguan IS38 and Big turbo upgrades

[Melbourne_Tiggy]

I'm interested to know what a full Stg 3 upgrade will cost me. Anybody have the numbers from their upgrade paths? Or is something that yourself would rather not know .....

Take a seat Sharkie...

So I can take you through a APR stage 2.5 path:

-ECU Tune $1k
-DP $1.8k (AWD/Golf R)
-Intake panel $0.1 (Carbonio is $0.80)
-Intake hose $0.1 (ECS/Ram air etc)
-OEM IS38 $2k ($1k second hand)

Around $5k for new hardware and about 6 hours of labour. It is possible to bolt on the stock DP on the IS38, but you will sacrifice some HP due to the stock cat and pipe restriction.

If you were able to source a second hand IS38 and use stock down pipe (you could modify this ) you should be able to get hardware costs down to $1.2k and then throw on a tune for around $1k. If you are handy with a wrench and can DIY, you’d save on the labour also.

[Melbourne_Tiggy]

Tiggy the Hybrid sounds impressive. Be interesting to hear once someone has gone down this path. Personally I’d like to stick with the APR pathway, it’s logical based on where my local tuner is and as you say it will be a 4 second car once I get to that stage which will more than meet my goal. It’s so easy to fall victim to the horsepower bug and I spent a lot of money in previous years when the STI was in its hey day. If I can get a super reliable Tig that when required can do those sort of sprints I will be more than happy. I learned in previous years that sooner or later your going to compromise daily driving, considering most of the time the car will be in comfort mode cruising and then turn into Hyde when I want it to will be awesome.

Based on what I have read your car drives like it should but you have the power there when you need it. If that’s the case then definitely it’s the cars pathway.

In 3-4 years I will track down a good 2nd hand RS3 and get the stage 1 APR flash tune and airbox, I have a few mates that have done this and the car is staggering.
Thanks for your help 👍

Agree with you that an RS3 FL is the way to go for a bang for bucks beast. A stage 1 e85 tune takes it to the next level of craziness. From a random fact perspective the RS3 also runs a BOSCH MQB DQ500MQB gear box like the MK2 Tiguan, so there is some performance pedigree that is also shared with the RS3.

[tigger73]

I spoke to Guy from Harding Performance a few weeks back and he was saying they were looking into the Tiguan 162 platform for OEM+ tunes and potentially even doing a IS38 Hybrid bolt on for it. It would be the Franken-Mumster V2, the original had a GTX2867R turbo on the EA888 Gen 1 engine (GTI mk6).

The original Frankenmumster also had a fully built motor to allow higher levels of boost. I think they forgot to tell the guys at Hot Tuner that fact so that it didn't get bumped up into the >$75k category...

[tigger73]

The Personal Flasher is 149 euros and tune 660 euros.....Note I found out the hard way that I also have to pay gst and import duty...

Should have just ordered the personal flasher without the tune and then paid for the tune separately. Would have been harder for them to charge you GST on the file...

[Melbourne_Tiggy]

Should have just ordered the personal flasher without the tune and then paid for the tune separately. Would have been harder for them to charge you GST on the file...

Good tip for next time lol

[tigger73]

Good tip for next time lol

Yeah a bit late now

[Melbourne_Tiggy]

TVS Tune Update

So I unboxed the Personal Flashing device last night and included was a nice black case with a zip, kinda like a Bose QC35 headphones case. In the case was a proprietary OBD module, a USB cable and instructions. I followed the instructions and downloaded the TVS app to my laptop installed the drivers, connected the USB cable to the laptop and the other end to the Personal Flashing Module and then hooked it to the OBD port of the Tig.

It was able to read my ECU and extract the information it needed for TVS regarding the specific DQ500MQB Bosch model which is 0DL300012G and some other car specific information.

I have sent the data log/read to TVS who are currently producing the stage 2 + TVS tune and will send me a file soon.

Stayed “tuned” (pun intended...)

[tigger73]

Interested to hear how it goes. Looking from their website it appears they should know what they're doing : DQ500 - TVS engineering

[Melbourne_Tiggy]

Interested to hear how it goes. Looking from their website it appears they should know what they're doing : DQ500 - TVS engineering

Yeap, pretty good reviews online, check out their Facebook page for their latest projects.
They are well regarded DSG experts and have done a number of DQ500 swaps, custom DSG tunes and race clutches for high powered vehicles.

I received the TCU stage 2 + file overnight, I will install next week when I’ve got some time off during the Christmas break.

[tigger73]

I’m currently looking at turbo options... IS38, TTE470, TTE525, snail turbo, high flow IS20???

I really don’t want to kill the daily drive-ability of the car but really wondering if there’s something a bit better than a stock standard IS38.


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[Dose Pipe Sutututu]

"if" I were in the situation to fit a new turbo to the daily (which would be never lol) I would find a blown IS38 (which is pretty much a Borg Warner EFR turbo) and get it high-flowed by a turbo re-builder and fit slightly bigger wheels on both the compressor and turbine side with a more robust CHRA containing some what ceramic ball bearings (this is starting to sound like a GTX lol)

I'm not a fan of Borg Warner turbos, as soon as you over speed them they poop out turbine wheels.

Looking at the IS38 turbo, which houses a ~58mm (exducer) compressor wheel, you could easily mill it out to fit the likes of a GTX2863 which "has" a 63mm exducer but actually is a bit bigger due to the extended tips on the blades.

Also this option works out cheaper than buying off the shelf stuff.

[tigger73]

I’m still looking to find the comparison data between the various options however I suspect the larger turbo options will spool ~500rpm later.

It’s this info I’m chasing at the moment to try and help with working out which way to go. I don’t really want to sacrifice daily driving. I know an IS38 is a safe route but also is going to have it’s limitations.




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[Dose Pipe Sutututu]

IS38 is twin scroll, our turbos are open scroll.. there's the 500rpm you'll get back from going bigger

[Melbourne_Tiggy]

I’m currently looking at turbo options... IS38, TTE470, TTE525, snail turbo, high flow IS20???

I really don’t want to kill the daily drive-ability of the car but really wondering if there’s something a bit better than a stock standard IS38.


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Id keep the turbo swap options limited to a bolt on solution without modifications to fit. How about a TTE610R (IS38 frame/housing) It’s 10% off today on USPmotorsports website and would work well with a custom tune.

TTE610R Upgrade Performance Turbocharger for Gen 3 - MK7/8V - TTE610R-Gen3 - 20403

Or a CTS BOSS solution using the proven garret gtx gen 2 turbocharger rated between 400 -600 Hp depending on the model.

CTS Turbo MQB BOSS V2 MK7 GTI/Golf R/8V S3/8V A3

Or a hybrid IS38 from DBV2, Harding Peformance/OEM+, REVO ETR, Littco, HPA Motorsport.....there are so many to chose from. Probably best to talk to your preferred custom tuner to work out what hybrid IS38/ GTX turbos they’ve done custom tuning for and can stand by the product, reliability and power vs. buying a product that your tuner may not have tuned before / doesn’t support or isn’t able to optimise the performance of the hardware.

[tigger73]

Id keep the turbo swap options limited to a bolt on solution without modifications to fit.

Agreed I'm looking at direct bolt-on solutions only.

How about a TTE610R (IS38 frame/housing) It’s 10% off today on USPmotorsports website and would work well with a custom tune.
TTE610R Upgrade Performance Turbocharger for Gen 3 - MK7/8V - TTE610R-Gen3 - 20403

TTE610R is for 600+hp applications and requires a fully built engine (stage 4) to cope with the levels of boost. Thanks for the suggestion but this one is off the shopping list

Or a CTS BOSS solution using the proven garret gtx gen 2 turbocharger rated between 400 -600 Hp depending on the model.
CTS Turbo MQB BOSS V2 MK7 GTI/Golf R/8V S3/8V A3

Yes that's a possibility but it would have to be the GTX2867 rather than anything bigger. I'm looking at outputs 450(ish)p as I'm looking to keep the car for a while and don't want to be running things too hard.

Or a hybrid IS38 from DBV2, Harding Peformance/OEM+, REVO ETR, Littco, HPA Motorsport.....there are so many to chose from. Probably best to talk to your preferred custom tuner to work out what hybrid IS38/ GTX turbos they’ve done custom tuning for and can stand by the product, reliability and power vs. buying a product that your tuner may not have tuned before / doesn’t support or isn’t able to optimise the performance of the hardware.

It's just trying to sort out the wheat from the chaff and yes finding a decent option that is supported by my tuner (they'll pretty much tune any option). The problem with any power level is that you get used to it and then want more...