Pretty sure, Not 100% but it sure as hell made a big difference. Changing my BOV made a difference though and there are plenty on this board that believes that has nothing to do with it.
10000000000000% agree lol
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I had a OA TIAL with a 10-11psi spring witch was too tight. I went to a recirculating TIAL with an 8psi spring and it helped a bunch.
http://i123.photobucket.com/albums/o...n/DSCF8962.jpg
I may try tightening the Greddy some. I think it lets go too soon as is anyway.
Recirc
I'd recommend the tube