Tigger73's 125TSI Tiguan Build Thread

[tigger73]

The car does feel a bit more freed up with the new intercooler. I don't think it's the cooling effect as today is a mild day - 20 deg C.

I just think the stock intercooler was a bit restrictive and now with the S3 intercooler it feels like it allows better flow.


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[brad]

Stock Tig intercooler is 32mm so S3 is 21% increase just in thickness. I'm not sure about how "dense" the S3 one is compared to stock Tig one but just with the thicker core it should be a reasonable improvement.

I figure if the S3 intercooler is good for power outputs around 200kW that should do me just fine

All mounting points are identical, so this is a bolt in bolt out job.


And carefully removing the aluminium end with a hacksaw and screwdriver making sure not to nick the hose.




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Blimey! 32mm is the same as my 1.8tsi. I would have thought the Tiguan would have at least the Mk6 GTI 38mm IC.

I have the same S3 IC sitting at home waiting for me to replace the 32mm I have.

You should have removed the green O-ring & kept it as a spare as it is used in the pipework between the turbo & the IC

[tigger73]

Blimey! 32mm is the same as my 1.8tsi. I would have thought the Tiguan would have at least the Mk6 GTI 38mm IC.

I have the same S3 IC sitting at home waiting for me to replace the 32mm I have.

You should have removed the green O-ring & kept it as a spare as it is used in the pipework between the turbo & the IC

I know the 2012 update has a slightly different intercooler to the 2008-2011 Tigs. You'd have to get Ramee to measure his up if it hasn't already gone in the dumpster.

I'll go and fish the o-ring out and add it to my collection of "bits". Anyone need an intercooler o-ring send me a prepaid envelope and it's yours!!!!


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[Ramee]

I know the 2012 update has a slightly different intercooler to the 2008-2011 Tigs. You'd have to get Ramee to measure his up if it hasn't already gone in the dumpster.

I'll go and fish the o-ring out and add it to my collection of "bits". Anyone need an intercooler o-ring send me a prepaid envelope and it's yours!!!!


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Haha funny! I still have my stock intercooler and quick check showed it has a 37mm - 38mm width core. Its part number 3AA145805C
ebay link NEW GENUINE VW PASSAT TIGUAN 2.0T FSI CCZB TURBO INTERCOOLER 3AA 145 805 A | eBay

[tigger73]

Haha funny! I still have my stock intercooler and quick check showed it has a 37mm - 38mm width core. Its part number 3AA145805C
ebay link NEW GENUINE VW PASSAT TIGUAN 2.0T FSI CCZB TURBO INTERCOOLER 3AA 145 805 A | eBay

That is interesting. I'm wondering if it's because yours is a 155TSI and mine is a 125TSI that I got the smaller intercooler. I suspect this may be the case that the 147/155TSI get the upgraded intercooler to cope with the extra power. Just means that there's more to be gained for a 125/132TSI upgrading their intercooler than someone with a 147/155TSI.

I'll be interested to see what the dyno shows when I get back on there. If the intercooler was causing a pressure drop/turbo to work harder I should (hopefully) get better flows/more boost and theoretically more powa

[Wynnston]

Haha funny! I still have my stock intercooler and quick check showed it has a 37mm - 38mm width core. Its part number 3AA145805C
ebay link NEW GENUINE VW PASSAT TIGUAN 2.0T FSI CCZB TURBO INTERCOOLER 3AA 145 805 A | eBay

I think that was the same part number on my mates Golf R intercooler as well. He's upgraded to an APR and I was wondering if it would be an upgrade to snaffle his old one.

[Ramee]

I'll be interested to see what the dyno shows when I get back on there. If the intercooler was causing a pressure drop/turbo to work harder I should (hopefully) get better flows/more boost and theoretically more powa

Still aluminium S3 intercooler has a 40.5 mm core with aluminium end tanks to store more heat to cope with temp surges and heat soaks.

By the way I see you are still lusting for power You do know what you got to do!

[Ramee]

I think that was the same part number on my mates Golf R intercooler as well. He's upgraded to an APR and I was wondering if it would be an upgrade to snaffle his old one.

Lucky you didn't buy it. otherwise could have ended up with two identical intercoolers. I think now VW discontinued the aluminium one and going for plastic end tank design for cost cutting, heard lot of people are getting new plastic ones when they order S3 intercoolers..

[tigger73]

I think that was the same part number on my mates Golf R intercooler as well. He's upgraded to an APR and I was wondering if it would be an upgrade to snaffle his old one.

I'd be doing some investigation/checking the part number on your intercooler before dismantling the front of your car.

Take off the rain tray under your engine and you should be able to see the part number on the intercooler outlet (passenger side).




The Golf R/ S3 I think are the same part as both come up if you google the part # 1K0 145 803 BE

As far as the difference between the intercooler on Ramees Tig (3AA 145 805 A ), the S3 one with aluminium end tanks (1K0 145 803 P ) and the newer style S3 with plastic end tanks I'm not sure anyone has the data on it.

It certainly could be that the S3 with aluminium ends is better but the later model S3 had higher power output so you'd think the new S3 intercooler with plastic ends would have to perform at least as well as the old one.


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[brad]

Haha funny! I still have my stock intercooler and quick check showed it has a 37mm - 38mm width core. Its part number 3AA145805C
ebay link NEW GENUINE VW PASSAT TIGUAN 2.0T FSI CCZB TURBO INTERCOOLER 3AA 145 805 A | eBay

It's not just the core thickness that matters. There are some subtle diffrence between a 38mm GTI intercooler & an S3/TT-S IC. Personally, if you have the 38mm GTI IC the next step would be one of the aftermarket providors.

What I have LOL'd at are those folks that have gone from Golf R/S3 plastic tank to S3 all alloy and claim they can feel an improvement. By all accounts the plastic tank unit performs slightly better.

Mk V GTI intercooler - 1K0 145 803 S (TFSI & TSI all markets)
Mk VI GTI intercooler - 1K0 145 803 S (US) 1K0 145 803 AK (ROW - 210hp)
Mk VI R intercooler - 1K0 145 803 AK (ROW)
Audi S3 intercooler - prior to MY 2010 1K0 145 803 P, MY 2010 built before 4/19/2010 1K0 145 803 AK, after 4/19/2010 1K0 145 803 BE
Audi TT-S intercooler - prior to MY 2010 1K0 145 803 P, MY2010-11 1K0 145 803 AK, MY 2012 1K0 145 803 BE

I really don't think an IC upgrade will provide any performance gains unless other mods have caused the IC to be a choke point. What it will do is reduce heatsoak & therefore give more consistent power output - esp in hot weather or traffic.