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-   -   Stage 2 mods? (http://www.wrxtuners.com/forums/f70/stage-2-mods-38562/)

05wrxwagonnoob 09-01-2013 12:12 AM

Stage 2 mods?
 
Do I need to delete the cat in my uppipe to go stage 2?
Also is a new downpipe manditory?
05 wrx wagon

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thekamikaze kid 09-01-2013 12:37 AM

I believe the cat deletion is not necessary, but the down pipe is, check the Cobb notes for the map u r using if u r using a Cobb ap. to go to stage 2. Most ppl will recommend the up pipe deletion tho, I assume your year has the cat.

boo-key 09-01-2013 06:16 AM

^correct. Stick to the map notes if using a ots map.

brfatal 09-01-2013 09:39 AM

Yes, an up-pipe is absolutely required for stage 2 and up.

boo-key 09-01-2013 11:41 AM

If it was absolutely necessary Cobb would have it in their map notes which, I saw no mention of. Very very highly suggested but not absolutely necessary, unless I overlooked something in the notes. Personally I would make it my first mod, even before a catback.

psinuse 09-01-2013 02:54 PM

A basic Stg. 2 car consists of Turbo back exhaust, which includes, DP and a cat back exhaust. I highly recommend removing the catted up-pipe and replacing it with one from either a 04-07 STI, 06-07 WRX, LGT, FXT or an aftermarket one. Then of course you'll need a tune and how ever you do that is your choice, Cobb AP, Open source or some other form of EM.

brfatal 09-02-2013 08:32 AM

[quote=boo-key bear;349194]If it was absolutely necessary Cobb would have it in their map notes which, I saw no mention of. Very very highly suggested but not absolutely necessary, unless I overlooked something in the notes. Personally I would make it my first mod, even before a catback.[/quote]

People have also lost motors due to advice on Cobb products that they did not give.

It is absolutely required. A catted up-pipe while stock is a bad idea. Higher stage 2 EGTs will eat that cat, and he will end up replacing both it and his turbo sooner rather than later.

boo-key 09-06-2013 07:07 PM

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