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Experience with bigger intercooler

Actually it can because everything inside of engine starts to work smoother and most of driveline components will also move easier after having some miles behind back. But there is no doubt - on midd rpm-s Forge IC helps a lot.
True, but also note the higher (seasonal) intake temperature on the dyno sheet post Forge install. It obviously works.
 

They installed the Forge Intercooler and got 30°C (86°F) instead of 60°C (140°F) IAT with the stock intercooler. That's a hell of improvement. Proves that the stock intercooler is just to small for that car.
They also got around 10hp and 10nm.
 
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Thanks for making this thread ! I’m currently in the process of shopping for an intercooler and was just about to make a thread. I feel it’ll almost be necessary to run a intercooler once I start running my JB4 next month with how hot this car runs on the factory tune.
 

They installed the Forge Intercooler and got 30°C (86°F) instead of 60°C (140°F) IAT with the stock intercooler. That's a hell of improvement. Proves that the stock intercooler is just to small for that car.
They also got around 10hp and 10nm.
thats a massive improvement
 
One thing is 100% sure - Oem IC must be upgraded on our cars.
Regarding power gains I don´t want to agree that it adds additional power.
IC upgrade will give us back some lost power (especially wheel power) what our cars will loose because of high IAT-s.
Regarding Simon MS ("they got +10 HP and 10Nm") - lets do not tell half of story, because they managed to get that +10 German PS on 4500rpm-s and they had + 11Nm on 6000rpm when car with oem IC, had 60-degrees of IAT-s.
German PS is not the same thing as HP or BHP. For example 300 German PS is equal with 295,896 bhp!
Run1 (with Oem IC): 292,0 PS @ 5550 rpm and 421,1 Nm @ 4120 rpm
Run2 (Forge IC): 300,0 PS @ 6905 rpm and 414,8 Nm @ 4230 rpm
It is clear that they got that total +8 PS just before rev limiter and it is only because of having cooler intake air temps (saved power).
More interesting fact is that because the total volume of Forge IC is so much bigger (it adds some turbo lag), they lost 6,3Nm in total. They managed to get 11Nm more torque on 6000 rpm but only because of lower IAT-s.
 
@TarmoT
Thanks for that technical statement. Of course I meant 10ps and not 10hp, my fault. Also, like Simon says in the video, the intercooler does not increase your engine power. It's like you said, it reduces the lost engine power due to high IAT. Thought, that's general knowledge in a car forum :)

At the moment I'm deciding which intercooler I'll take. Forge or Wagner. Any advice?
 
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I’ve heard the same thing re Wagner v Forge on the EU FB page. Forge being larger results in spooling lag. It was also mentioned that the larger amount of metal held heat more once it warmed and was less likely to cool quickly, and also blocked more air from the (water) radiator...the person concluded the Wager was “better” for these reasons.
 
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I can not choose between Wagner and Forge even myself ;)
Sometimes bigger is not better but I am not sure in this particular case.
I bought Wagner because Forge wasn´t available that moment and I am satisfied :)
 
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Hmm. That's not really helpful :D
But I can get the Wagner intercooler for 719€ instead of the Forge for about 770€ so maybe I go for Wagner.
 
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Hmm. That's not really helpful :D
But I can get the Wagner intercooler for 719€ instead of the Forge for about 770€ so maybe I go for Wagner.
:D....
But Forge comes with one additional hard pipe ;).....
 
Last week we had about 35-40°C. Standard IC was way on his limits. Had about 60-70°C IAT. And I was not on track. Only German Highway.
 
So let me get this right (being simple), is it a case of the stock intercooler not doing its job well enough (cooling enough air) to allow the engine to do what it should be able to do, hence the increased power with the larger intercooler?
And in normal day-to-day driving at normal temperatures, is this going to be noticeable?
 
So let me get this right (being simple), is it a case of the stock intercooler not doing its job well enough (cooling enough air) to allow the engine to do what it should be able to do, hence the increased power with the larger intercooler?
And in normal day-to-day driving at normal temperatures, is this going to be noticeable?

Sort of. At increased IAT the engine management retards the timing which reduces power. So a better intercooler decreases IAT when the car gets hot (racing or high ambient temps or stuck in slow moving traffic) and thus allows full power as no retarding of tbe timing is needed.

This is only an issue at higher temps of course. So no, an intercooler does *not* “increase” power, but prevents loss of power through heat soak.
 
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Sort of. At increased IAT the engine management retards the timing which reduces power. So a better intercooler decreases IAT when the car gets hot (racing or high ambient temps or stuck in slow moving traffic) and thus allows full power as no retarding of tbe timing is needed.

This is only an issue at higher temps of course. So no, an intercooler does *not* “increase” power, but prevents loss of power through heat soak.

Cool beans, so basically unless I'm taking it on track or having a heavy night in a Halfords car park full of Nova SRi and Saxo VTS, I'm unlikely to notice any difference?

Does the same go of installing a forge induction kit or will that be more noticeable?
 
If you just drive your car daily without track or any high speed races regularly you won't have any noticable benefit changing intercooler or intake. But if you want to remap the ECU it's highly recommended.
 
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