Originally Posted by
Antti O
Thanks for advice, GRS looks fine but i am worried about the cooling of the radiator, so i would choose some smaller but larger than the standard one. Pace double capacity looks nice..
I did read that the standard ic is restrictive in air flow, is that true?
Everything is restrictive, eventually. Std intercooler isn't even good enough for a Stg 1 chip - in anything other than winter air, 4/5th gear runs at 1 bar will see excessive ACT's and the ECU will start to pull timing to protect the engine (although, the turbo will get a hard time).
I am not a fan of GRS intercoolers. They are a crap fit, the twin-pass ones are very restrictive and every one I have seen has caused overheating problems (only real way to overcome that is to put the rad fans infront of the intercooler).
The nicest one i've seen and tested is the Pace one, but it's expensive (about £500 I think, with a new charge carrier etc).