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Old 04-06-2005, 09:46 PM   #1
Padge
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'05 Impreza WRX STi
Obsidian Black Pearl

Default STi COBB AP and helix catted DP... (stage 1 or 2?)

Can I safely run stage 2 with the stock catback or should I just stick with stage 1? I will be getting a new exhaust in a couple weeks, but I get the AP tomorrow and want to know if anyone knows if I will be safe on the 93 octane stage 2 map with just the helix dp.

Thanks for the help!
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Old 04-06-2005, 09:49 PM   #2
Focus4
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stage 2 will be fine... it won't be at its top ability but it will work...
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Old 04-06-2005, 10:06 PM   #3
darksands
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stage2, thats what I did.
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Old 04-06-2005, 11:47 PM   #4
Bishop
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stg 2
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Old 04-07-2005, 07:46 AM   #5
Padge
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So once I put the catback on it will just open up a lot more I guess?
Thanks!
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Old 04-07-2005, 09:07 AM   #6
WRX_2NR
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You'll probably only gain about 5hp from the catback. Spool time with be faster though
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Old 04-07-2005, 02:05 PM   #7
subieworx
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I got another PSI of boost with the catback as I was having problems hitting target boost. Now I am just a hair over target.
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Old 06-15-2005, 11:42 PM   #8
2k4STi
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I just swapped down to mine Padge I am wondering the same thing.
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