Hey guys
A mate of mine has an E90 335i and he said that if i want the exhaust to sound a little better what i can do is disconnect the butterfly switch near the exhaust. and in doing so the butterfly will stay open like it does in the morning.
Is this true?
Will this affect warranty ?
A mate of mine has an E90 335i and he said that if i want the exhaust to sound a little better what i can do is disconnect the butterfly switch near the exhaust. and in doing so the butterfly will stay open like it does in the morning.
Is this true?
Will this affect warranty ?