I beg to differ it made a pretty noticeable difference to my car. It went a lot harder than it did with the factory cooler... Its near on double the size. Ill admit if your chasing big power you probably wont get much more than 280 - 300 safely but theyre still a good cooler.
Is the cat 100cpsi? If it is im definately keen and have money ready to go when ever the group buy starts. Whats the minimum amount of people we would need to get those prices?
Just done this on mine today as I was a bit bored, made a fair difference to how it comes on boost. Much the same as it did when I picked it up 5k ago! Will be doing this more often