Originally Posted by Rican219
I just got my Exhaust issues corrected today we will see how it acts now see if the Sputtering and backfire goes away.
haha you got greedy, DP and no EM! I dont know my speed6s, but on the wrx, you can get away with this on the 02/03s (even though you still wont see the best benefits w/o EM) but you SHOULD NOT run aftermarket DPs on the 04+ wrxs w/o EM. (I'm pretty sure it has to do with the open loop and closed loop fueling/transition).
I advised dub to hold out on the downpipe and/or uppipe until he can get some EM, which he has preordered (CPE).
Dub: I think you skeered him
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