The great big MK6 Golf 118TSI tuning thread

[The_Hawk]

I always thought the DQ250 (DSG) and MQ250 (Manual) were rated for 250Nm (and the DQ/MQ350's at 350Nm).

Of course plenty of people are putting plenty more power through them than that and they seem to hold up pretty well (my MQ250 included).

Bottom line, yes you are putting in more power than the factory and should go in knowing that things could break and you'd be up for a repair bill if that ever happens... but then that's all part and parcel of the risk when tuning. Even if the gearbox is OK there is always the clutch plate.. or the drive shafts... or any other part of the driveline too

Hopefully someone with some real knowledge of the DSG can chime in for you though.

[Ryan_R]

If you drive with mechanical sympathy it'll be fine. i.e. don't request all the torques suddenly.

[Rawcpoppa]

If torque was really an issue we would see a ton of threads about broken dq200 clutches from people with stage 1 and stage 2.

We don't. Stage 3 and above however I've read where the clutches start to slip.

[Mk R]

Slipped into a google tuning vortex the other day and dug up these gems...

BullX 1.4 Twincharger Downpipe Euro 399
https://www.hg-motorsport.de/shop/pr...-Downpipe.html

What appears to resemble an S3 intercooler on Ebay from China AUD 385 delivered
VW Golf GTI 06 10 2 0T Turbo MK5 Fmic Intercooler KIT Version 2 RED | eBay

The intercooler appears to have different core thickness and outlet diameter to the stock S3 part 1K0145803P

Does anyone have any experience with these oversize units or the stock S3 units with a 118TSI?

[Ryan_R]

I've got the S3 intercooler on my car. Had to cut the end fitting off and stretch the pipe a little and use a more traditional hose clamp. Would be nice to go silicone but never found anything the right shape (all designed for the GTI/R, not the 118 ). Was mostly to help the car survive summer.

[Mk R]

I've got the S3 intercooler on my car. Had to cut the end fitting off and stretch the pipe a little and use a more traditional hose clamp. Would be nice to go silicone but never found anything the right shape (all designed for the GTI/R, not the 118 ). Was mostly to help the car survive summer.

Yeah, ok. Do you know how thick the intercooler core is on the part you installed? My concern is that the cheap ones advertised are about 57mm whereas the genuine part is 40mm. Looking at the space with the stock intercooler in the 118TSI there doesn't look to be much room...

[Rawcpoppa]

Yeah, ok. Do you know how thick the intercooler core is on the part you installed? My concern is that the cheap ones advertised are about 57mm whereas the genuine part is 40mm. Looking at the space with the stock intercooler in the 118TSI there doesn't look to be much room...

What's the part number for your stock intercooler?

Here are my measurements for my stock versus s3 intercooler.

Core for s3 intercooler is 37 mm.

[Mk R]

What's the part number for your stock intercooler?

Here are my measurements for my stock versus s3 intercooler.

Core for s3 intercooler is 37 mm.

Thanks Rawcpoppa, i'm assuming you've experienced that lag in your car. Do you think the overall benefits of installing the bigger intercooler were worth it or is the supercharger lag a real pain?

What was the difference you noticed after installing it?

[Rawcpoppa]

Most likely it will fit once the connection points line up as there is room in that area of the car for wider parts but what is of greater importance imo is lag due to an intercooler being too large.

Twintercooler installations on the 118tsi has led to increased lag in the supercharger portion of the band.

[Rawcpoppa]

I went to s3 straight. A friend of mine installed the larger intercooler via a twintercooler set up. I'm happy with the s3. I suspect twintercooler would be better for stage 3.

The s3 intercooler is a nice mod for consistency. Heat soak is almost none existent even on hot days. Temperatures here are 35 deg C by noon. It handles stage 1 tune just fine and I think it's enough for stage 2 as well.