Cobb AP for 2011 Evo X?
Now, by no means am I an expert with the synapse recirc valve; BUT, I've read that it's not just a drop in and go. The valve allows huge amounts of tuning, which needs to be utilized. MotoIQ used one on one of their evos. Might want to check that article out.
Drop in cosworth filter.
I didn't hear hardly any difference when I first put it in (on the stock map)...
I didn't hear hardly any difference when I first put it in (on the stock map)...






