Questions on stage 2 upgrade (downpipe/ap)

[SD_GR]

Via YouTube it's very difficult to tell but it seems throaty. The cars are quite quiet stock so I do think it's deeper and louder -- but again, only in person is it easy to tell.

[jilty]

Sorry to but am I reading that catless can in fact be tuned out completely without going EWG or polishing? I have had numerous conversations with some friends around my area about this. I was originally going catless until contacting Torqued performance and Socal and Plano Cobb. They basically said I will have boost creep and pushed catted. I was also told that if I went with a intake (which I have, no performance reasons, just wanted sound) and with a 3" exhaust I am basically set up for prime creep issues. My friend on the other hand said he had the exact opposite reaction, pushed towards catless. I am in a 2013 WRX and my friend is in a 2013 STI.

[EJ257]

Sorry to but am I reading that catless can in fact be tuned out completely without going EWG or polishing?

Tuning is a software fix. Wastegate modifications (going external or porting) is a mechanical fix.

[11blackwrx]

i was told by my tuner that it can be tuned out. i had boost creep on mine and im testing to see if it was resolved after my last tune

[jilty]

So in other words, a Tuner cannot actually eliminate the creep as it is a mechanical problem on an 08+, correct?

I'm sorry if I am coming off very uninformed and noobish on the issue, as I am very very new to this whole thing and I am trying to understand and research.

[EJ257]

i was told by my tuner that it can be tuned out. i had boost creep on mine and im testing to see if it was resolved after my last tune

There is likely some kind of miscommunication going on. Boost creep is a mechanical problem. Boost spikes are a tuning problem. You can tune out boost spikes, you can't tune out boost creep.

So in other words, a Tuner cannot actually eliminate the creep as it is a mechanical problem on an 08+, correct?

Boost creep is a mechanical problem, period. It's not based on model year.

[Heide264]

Sorry to but am I reading that catless can in fact be tuned out completely without going EWG or polishing? I have had numerous conversations with some friends around my area about this. I was originally going catless until contacting Torqued performance and Socal and Plano Cobb. They basically said I will have boost creep and pushed catted. I was also told that if I went with a intake (which I have, no performance reasons, just wanted sound) and with a 3" exhaust I am basically set up for prime creep issues. My friend on the other hand said he had the exact opposite reaction, pushed towards catless. I am in a 2013 WRX and my friend is in a 2013 STI.

Did you read this thread? As matt reiterated for about the tenth time in this thread alone, a tune will not fix boost creep. If it does, it wasn't boost creep.. It was a crappy tune.

Multiple conversations will not change the facts...
-You won't know for certain whether or not your car will creep normally until you try it.
-if it is boost creep, your waste gate is not allowing enough air through it when open.
-to fix this, either get a bigger waste gate or reduce back pressure on the existing one.
-or, set your target boost higher than it should be and pretend like you are teh bestest tuner evar. Don't actually do this.

Sorry to be short on the subject, but it has been explained in pretty large detail already in this thread.

[zax]

Yeah!

[Calvinball]

Yeah!

[Mikie13]

Yeah!

[pauller]

Got the Q300 today and put it on. Sounds much better! I'll get a sound clip and pics up soon.

[pauller]

Like they said, it's a mechanical issue. Sure it can be band-aid-ed by using a LWG map but it's still going to be there. On the other hand, not everybody has it. Many people, like myself, run catless and have no issues. I think it's worth a try going catless but catted is definitely safer.

[Heide264]

Like they said, it's a mechanical issue. Sure it can be band-aid-ed by using a LWG map but it's still going to be there. On the other hand, not everybody has it. Many people, like myself, run catless and have no issues. I think it's worth a try going catless but catted is definitely safer.

I'd agree with a lot of that. Keep in mind though, it isn't just a question of if you have it or not many times.

I'd put a gamble out there that if you are catless in the newer models your boost control is suffering a good bit, regardless if you aren't having over boost issues. My issues were more involved with peak torque boost control than at red line. Even with a lot of tweaking... I still had random spikes that I couldn't get tuned out.

Even if you do have minor boost creep issues, it won't explode your engine most likely if considered during the tune. It's just not ideal. Inconsistent boost control really does put a damper on our cars though. It's amazing how even a flutter of a psi or two can change the feel of the car.

That being said, with the newer models, I would recommend going catted to the general person to put a bit of back pressure on the turbine. If you are considering switching turbos or going EWG... I'd ditch it for a variety of reasons.

Just my $0.02.

[WRXpower17]

I definitely see where you guys are coming from and maybe I'm just weird. I've never really been a fan of baggy pants personally but to each his own.

Now, back on topic, I put the stock mufflers back on and it sounds a lot better; like stock but a little louder. The video I made doesn't really do justice though.

Tomei 3in Catless Downpipe (2013 WRX) - YouTube

Stock exhaust with catless downpipe sounds really good. Does anyone know it it will sound similar with a catted downpipe?

[starkall]

To me stock exhaust and catless dp sounds the same, maybe a very tiny bit diff. But an aftermarket catted dp and stock exhaust will sound like stock I guarantee it.