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Old 06-26-2016, 05:17 AM   #1
erza
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1.8t upgrade to Golf R intercooler

I saw a low km takeoff intercooler from a Golf R advertised locally and was thinking it might be a low cost upgrade to my 1.8t (2016 m/t GSW). Any drawbacks associated with this modification? I've read that I won't see gains outside of avoiding heat soak more effectively. I don't have a tune right now but I will likely be going that route soon. definitely interested in hearing what people think.
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Old 06-26-2016, 07:25 AM   #2
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I installed the R intercooler last year on my APR Stage 2 TSI. I don't think I had any heat issues with the stock intercooler, but I upgraded hoping a vendor would do me proud and release an IS20 or IS38 map.

Anyway, the car did seem more responsive after I did the swap, so that was nice.
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Old 07-07-2016, 02:21 PM   #3
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Few questions for those that have done this.

1) any power increase
2) any reduction/increase in turbo lag
3) install difficulty or if done by shop, labor cost

Live in Texas and even with stage 1 apr and stock ic, haven't had heat soak, but maybe just don't notice. Figure if only upside and easy install, might give it a shot as they are available for about $220 vs APR et al for $700+
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Old 07-08-2016, 04:35 AM   #4
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1) No noticeable change in power.
2) Felt more responsive, so would assume a reduction in lag.
3) I pretty much removed the front of the car. I did everything myself except the actual swap. I followed some instructions online that stated to leave the headlamps in place. This meant I needed someone to prevent the headlamps from flopping out and stressing their wires. I would just disconnect and remove the headlamps if I ever did it again. Other than that, I didn't find it too difficult to do. Just keep track of all of the parts you remove and you should be fine.
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Old 07-08-2016, 07:59 PM   #5
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Thanks for all the info. Exactly what I was looking for.
Saw a video from Revo showing the procedure to change.
Seemed pretty involved.
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Old 07-13-2016, 06:38 PM   #6
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How could a bigger (higher volume) IC make the engine feel "more responsive"?
More air to compress makes it less responsive (if at all noticeable). Don't get
me wrong, guys, but this is probably self imagination.



Get the R IC when you have a tune/piggy back and live in a hot climate. Other-
wise you won't gain nothing.
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Old 07-14-2016, 03:58 AM   #7
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The air won't get more compressed by a larger intercooler, it will expand to fill the larger volume of the intercooler. I understand your point, though. If the stock intercooler poses a significant restriction to flow, than it's possible for a larger cross section to help reduce the restriction. Otherwise, the larger volume should reduce responsiveness.

Outside of that, I can only go by what I felt. It's not a huge difference, but it was something I noticed via butt dyno.
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Old 07-14-2016, 08:53 AM   #8
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is the 1.8TSI stock intercooler same size as the mk7 golf Gti? i have been researching for intercooler for long time and here the dimension size of all the brands i have collected

• 24.25" x 16.25" x 1.25" - 492.5 in³ volume - OEM GTI
• 24.25" x 16.25" x 1.37" - 541.8 in³ volume - OEM Golf R
• 24.00" x 16.25" x 2.25" - 877.5 in³ volume – APR
• 23.5” x 16.5” x 2” -- Unitronic
• 25.2” x 16.1” x 2.5” -- Wagner Tuning
• 25" x 16" x 2.25 - 900.00 cubic inches -- CTS Turbo
• 24" x 16.4" x 2.25" --Integrated Engineering
• 24.4” x 16.1” x 2” --HG motorsport HF series
• 23” x 16.54” x 2”- 760in --Revo Technik
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Old 07-14-2016, 04:05 PM   #9
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Quote:
Originally Posted by Nyulak View Post
The air won't get more compressed by a larger intercooler,
I didn't say that, at least I didn't want to. Bigger IC mean bigger capacity,
meaning more air. In highly dynamic situations = quick change of load, which
is described by "responsiveness" describes, this increased air volume requires
more time to fill. As mentioned before, it's not s significient difference between
stock ICs since no stock IC is really that huge to cause issues. Slick's list suggests
that the 1.8 TSI's IC could be another 10 % smaller compared to the GTI's IC.
Guess all factory ICs share the same frontal area, while thickness varies.



Quote:
Originally Posted by Nyulak View Post
it will expand to fill the larger volume of the intercooler.
The air will "expand"? When air is cooled down, the opposite happens. That's
why ICs are used.



Quote:
Originally Posted by Nyulak View Post
I understand your point, though. If the stock intercooler poses a significant restriction to flow, than it's possible for a larger cross section to help reduce the restriction. Otherwise, the larger volume should reduce responsiveness.
Alright.



Quote:
Originally Posted by Nyulak View Post
Outside of that, I can only go by what I felt. It's not a huge difference, but it was something I noticed via butt dyno.
You know about butt dynos . . .
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Old 07-14-2016, 07:46 PM   #10
Slick99
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I ve asked few tuners about A3 1.8tfsi stock IC is same size as Golf Gti so i guess Golf TSI got the same IC size as Gti's

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Last edited by Slick99; 07-15-2016 at 07:52 AM.
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Old 07-25-2016, 12:07 AM   #11
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The 1.8 TSI and 2.0 TSI use the same intercooler. Only the Golf R and S3 get the better unit. From what I've seen both of the stock intercoolers are made by Mahle. The Golf unit in the US is made in Mexico while the Golf R / S3 unit is made in Poland.
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Old 07-26-2016, 11:52 PM   #12
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Quote:
Originally Posted by fullyswitched View Post
The 1.8 TSI and 2.0 TSI use the same intercooler. Only the Golf R and S3 get the better unit. From what I've seen both of the stock intercoolers are made by Mahle. The Golf unit in the US is made in Mexico while the Golf R / S3 unit is made in Poland.
Thanks!
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Old 07-28-2016, 02:16 AM   #13
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So is something beyond an R intercooler, say an APR or Wagner, considered overkill for a stage 1/2 tsi? Keep in mind Texas consistent 100° summers.
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Old 07-28-2016, 08:09 AM   #14
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Quote:
Originally Posted by MonkeyMD View Post
So is something beyond an R intercooler, say an APR or Wagner, considered overkill for a stage 1/2 tsi? Keep in mind Texas consistent 100° summers.
dont think so, it will better than S3/R intercooler. Some guy did fmic twintercooler from Forge and felt better response.
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Old 07-28-2016, 01:35 PM   #15
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Has anyone actually compared the flow of the intercooler? Yes we know they are larger, but larger depth usually means more rows to run through and cool off. Intercoolers work just like a radiator. If the coils inside are not any less or more restrictive, it won't affect the boost response, but will help cool the charge more. Until a flow test is done, the larger sizes don't mean anything other than potential cooling possibilities.
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Old 07-28-2016, 02:35 PM   #16
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Bigger aftermarket ICs don't affect flow, since they're usually less restrictive.
The drawback (beside cost, effort and weight) is their bigger capacity, resulting
in more lag, which albeit is probably insignificant in most cases.

Alright, so we learned that the 1.8T comes with the same IC as the GTI.
As a consequence, I'd say:

- stock IC is pretty sufficient for stage 1 at least, probably even stage 2
- the bigger OE Golf R/Audi S3 IC will very likely fir plug & play

You can fit the R IC, but you don't need to.



Quote:
So is something beyond an R intercooler, say an APR or Wagner, considered overkill for a stage 1/2 tsi? Keep in mind Texas consistent 100° summers.
Hard to say, since with any IC there's still some loss at such high temps.
It'll be less issue compared to a stage 2 GTI though, since it's the same
IC. Personally in case of the 1.8T I don't think an aftermarket IC is worth
the money. Stock S3/R ICs aren't as efficient, but they're pretty cheap.



Quote:
Originally Posted by Slick99 View Post
dont think so, it will better than S3/R intercooler. Some guy did fmic twintercooler from Forge and felt better response.
'Better' but not 'good value' in case of the 1.8T, which already shares its
IC with the GTI. I'd spend my hard earned money elsewhere.
Again, there's no way an even bigger IC gives you 'better response'. More
air capacity to compress means more lag, say, response must be worse.
But we now about self-fulfilling prophecy. When someone spends money on
something, then he will feel an improvement. Any placebo works that way.

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Old 08-05-2017, 05:52 PM   #17
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bumping old post. Someone is offering me a used R intercooler for $200 shipped, and I have a 1.8T with a IS20 going on. I was thinking the stock intercooler is probably ok, since it usually doesn't get over 80 to 90 degrees here in the bay tops, and our car shares the same IC as the GTI anyways
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