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Slipped an STi panel filter into my STi PPP yesterday. Have to say I was amazed at the difference it has made. Wasn't expecting as much noticable gain. Pulls harder and the lower end of the rev range is much better and less lumpy. Better pull up at the top end flat spot too. Has anyone done a before/after with one of these filters on a dyno?
Japanparts. The breakdown of all the stuff resulted in this price. Look at the price on the link below. Mind you, the shipping cost was for all our stuff. Maybe if you just order one filter and have it shipped it will be £41.
That's where I ordered mine from. P&P and credit card fee is on top of that price and I suppose if you order just one filter (which is what I did) the unit cost goes up. Should've done a group buy - doh!!