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Old 08-13-2004, 02:23 PM   #1
Red Rexx
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Join Date: Jul 2004
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Impreza WRX Cobb AccessPORT Stage 1 Mods

Hey...I have a 2004 WRX. I am thinking about getting an AP. I noticed the first map for a car is the Stage 1 93 Octane map. Currently, I have a BOV and am getting a CAI, catback, and more. Can anyone tell me what aftermarket parts I should have for the Stage 1 93 Octane map before going on to Stage 2? Is there a list of parts from Cobb I could get for each stage? Thanks!
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Old 08-13-2004, 02:27 PM   #2
mrbigisbudgood
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Stage 2 starts when you get a downpipe.
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Old 08-13-2004, 02:28 PM   #3
Vacheron
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Read the FAQ on COBBs site. http://www.cobbtuning.com/wrx/accessecu-faq.html

In general all you need reach stage 2 is a Turbo Back Exhaust or downpipe, then reflash to the new map.
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Old 08-13-2004, 02:39 PM   #4
Vacheron
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For those who are lazy:

Q. What is needed for Stage 2?

A. We actually field a lot of calls with people wanting the Stage 2 AccessECU because the dyno graph looks a lot better, but they do not have a turbo-back exhaust. Here is a diagram of the exhaust to help you visualize:




The Stage 2 was tuned on a car with a full turbo-back system. If you have pieced together a less than optimal combo of parts or those that were not designed to work together you may not get the full benefits of the Stage 2 AccessECU. Boost may not come on as quickly and the peak power may be down from those that have a well designed full turbo-back system. If you have replaced the first section (second cat or downpipe section) and nothing else, then the Stage 2 map is what we would recommend. Again the results will be far less than optimal, but it will control the boost better than the Stage 1. If you have replaced sections 2-4 (third cat, mid-pipe, and muffler section then you are still Stage 1. You managed to get all except the part that makes the most difference. Again, we want to reiterate that Stage 2 will only get the intended results with a well designed complete turbo-back. I guess it is a little bit our fault for having the map before our full turbo-back is ready, but turbo-backs are common and we wanted to make sure that as many people have what we feel is the best ECU solution.
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