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Discussion Starter · #1 ·
ok here is the delema lol, i can get one or the other right now which would it be first . . . ive got a tanabe hyper madalion catback, so should i get a matching downpipe or get the cobb ap and then get the downpipe like 3 months later or vise-versa.

Which would u guys get first?, and which yeilds beter power gains remeber that this is a 03 wrx? . . . i tend to stay away from nabisco unless its absolutly necessary (sp).

Thanks alot, you guys are always helpfull! :lol: :bow:
 

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you can really go either way, if you had an 04 or + i would say ap first, but since you have an 03 wrx I believe you can get away with doing the dp without the ap and not have problems with boost creep
 

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I would say AP, as you can experience stage 1 vs. being untuned for a downpipe.
 

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+1 for AP. Your car's performance will match the sound (I hope)
 

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Cobb AP ftw
 

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u can do either way, im putting on the dp first
 

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honestly if you had an 04 plus wrx or sti i would say some sort of engine management ..but according to a few tuners in nj 03 and lower wrx's etc were more mod friendly as far as the ecu is concerned so its not really needed just for a downpipe
 

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garo..we'll get our ap and downpipe together..lol we just need money!!
 

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Handsdown you should get the AP first, then add the DP later since you already have EM!
 

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General concensus has been the AP first!
 

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Im with JJ AP first, since you go be stg 1 and then downpipe after for stage 2
 

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I will be the first to say you should get an aftermarket uppipe first.

Remember WRXs have a cat preturbo. Removing it will greatly increase spoolup.
 
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