12 wrx invidia turbo back cat less q300 exhaust. map said u needed high flow dp how bad will it be to run it with catless till i can get a re tune.

 

I would not run it at all without a tune.

 

I've heard of people doing that with 02-07 wrxs but I've never done that myself. From what I heard nothing bad happends but don't quote me I would just wait for the tune though.

 

I have an 06 and have run cat less for about 10 months with the ots stage 2 tune and it's fine, bt I'm not sure how the 08+ wrx's do

 

ive had buddies run catless in 04&09 without problems yet, me personally I wouldnt risk it without a retune


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will not be a problem running cat less. unless you a tree hugger

 

I believe I read that some experience boost creep when running stage 2 OTS with an aftermarket catless DP vs aftermarket Catted DP. Cant speak from exp just from what i have read a number of times.

 

^ Yep. It works, but it doesn't work that well. (not that OTS maps were great to begin with).

 

so many noobs who don't remember what it was like before the AP came along. you'll be fine just don't play race wars on the H3. watch your boost for spikes but really you shouldn't have any problems. if you're really that worried about it though just don't put on the DP until right before the tune.

 

This

Oh if your so worried about boost spikes/creep, get an Ewg

 

This and this, though If you don't wanna do EWG yet they do have an OTS low wastgate map.

 

sorry for the pm brody, didn't realize you already started a thread! personally, I wouldn't run uncatted set up with ots. like stated above, boost creep is common, and I've also seen people pull check engine lights running the ots map while running catless.

 

let me guess, cat inefficiency?

 

Boost creep is not as common as you would think in the warm weather of Hawaii.

I've experienced it a few times in the early mornings during the cool winter months, in the high 50 degrees. Oh and btw I was tuned when it happened. Even tuned you cannot 100% tune out boost creep and spike. It's a design flaw where the air just can't pass through the iwg efficiently, there for hitting the turbine.

Want no boost creep? Go Ewg.....

 

i say again what happened to the old school days when men (and ladies who wanted to be men) owned subarus. if you don't know then don't go simple as that. you gonna listen to arguments from both sides then ultimately throw the parts on because you bought them and you'll just take the risk. whats the worst that can happen? you break something and get to buy more upgrades? sounds like a plan to me, but then i'm from the era of men subaru owners not the gender bending paranoid lady-boys we got today.