ElBartoRex
Member
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ignore this post.....sorry i missunderstood what you were doing.
well the 02-05 wrxs are 2.0 liter and the 06+ are 2.5 so it really depends on what year. I had an 04 stage2 and no contest the ms3 is faster. A stage 2 06+ is probably more even with an edge going to the ms3. I have a coworker with an 07 stage 2 and he admitted my stock ms3 felt a little faster.