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I loved the turbo song under load, but hated the downhill drone of the 6637.
Going up hill was great , coming downhill sounded like a set of bongo drums in my head.
Yeah i know what you mean. Having a WW and ATS, and the 6637, i got a headache driving a round trip 450 miles yesterday. I am going to change out the WW for the stock compressor wheel before i make the trip to BTS, at 3psi the whistle comes on loud and its all you can hear over the radio.
(Offtopic- however with the flat land and tailwind, i cruised 80mph and had no exhaust drone, COULDNT hear the stacks (!) and no engine noise whatsoever over the wind noise. Fuel mods- nice)
well i think i will try the 6637, it seems to me that i can get out cheap and if i dont like it, i can go back to what i have. but i love the sound of a turbo. think this will help me out a bit?
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