Originally Posted by turboboss
ask him whose double valve springs they are because i thought that newman dont do any i could send you some photos of my setup if you pm me with an email address
newman tell me that the double valve springs are the same poundage as the standard springs but they have better harmonics.
Just been out in my car again and it is really anoying how it gets to 5 thou and looses momentum, even sounds different through the zorst.
How come on this months performance ford the piper kit they use comes with double valve springs? recent upgrade by piper?