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Old 04-27-2014, 04:31 PM   #1
kryptea
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Default Constructive criticism needed!!

So I have a list of mods I want to do on my sti. I have read and read and read until my eyes are bleeding and falling out of my skull. So here it is

1- COBB catted DP.
2- Grimmspeed 38mm V-Band EWG Up Pipe kit w/ Tial MVS Wastegate
3-COBB SF intake
4-PnP stock exhaust manifold
5-protune.

So I have two main questions 1) I want to install the downpipe with my stock exhaust because I live in CA, they have crazy emissions laws. Plus I would rather keep it relatively quiet. Is there any big power loss with doing this set up?
2) when it comes to the EWG. I absolutely hate that loud noise it makes but I also want to minimize any boost creep issues. If for some reason I can't re route it into the DP. What are other options? EBCS or MBC? I wouldn't mind the noise as long as it's not a flutter.

Anyone with these mods let me know your set up and how you like it. Or of you were in my shoes what would you do. I'm trying to keep my first mod bug under $3000.
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Old 04-27-2014, 04:37 PM   #2
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1. The Stock exhaust will be a restrictive flow point and you will lose some power, But it isn't huge.

2. To be honest, if you don't like loud noises, The EWG setup is not for you. EWG is very loud, only when you want it be. But since you're getting a catted DP you are already preventing some boost creep, compared to a catless down pipe. I would recommend getting the EBC like a grimmspeed or cobb as they are light year's better than OEM, By getting an EBC, this will help aid overall boost control and boost creep situation's. As you mentioned already, a Pro-tune is mandatory.
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Old 04-27-2014, 04:51 PM   #3
kryptea
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Now that I'm watching more videos and starting to recognize it's only loud when you open it up. I think I'm just going to say F*** it and get it anyways. I might grow into it. Worst comes to worse ill just re route it.
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Old 04-27-2014, 06:04 PM   #4
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wheres your boost controller and your catback. If you're going ewg might as well do it
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Old 04-27-2014, 06:11 PM   #5
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Yes I will get a boost controller as well. I stated I didn't want the cat back 1) ca is gay with emissions laws. 2) the one I want is so expensive and if I skip it for now I can do everything else I want. So it's either do a full cat back now and maybe a uppipe or cat back and intake but not all 3. But your right I should just do everything while I'm there. Multiple trips for a protune will get expensive.
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Old 04-27-2014, 06:17 PM   #6
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Get a boost controller. You don't need an uppipe. You're fine with just your downpipe. You're not going to gain any power from getting a catback.
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Old 04-27-2014, 06:26 PM   #7
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Quote:
Originally Posted by codesoccer View Post
Get a boost controller. You don't need an uppipe. You're fine with just your downpipe. You're not going to gain any power from getting a catback.
So no uppipe? Can you elaborate? Everyone seems to be pleased with this mod and it's ability to get into boost sooner. All in all you might be right maybe I should cancel out on the uppipe.
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Old 04-27-2014, 07:02 PM   #8
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You have a catless uppipe from the factory. There aren't a lot of gains to be had from changing the uppipe. If you do decide to change the uppipe, change it if you ever change the headers. It's too much work to take the headers off for such minimal gains. You should consider a fuel pump. I don't think I saw that in your list.
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Old 04-27-2014, 07:09 PM   #9
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Quote:
Originally Posted by codesoccer View Post
You have a catless uppipe from the factory. There aren't a lot of gains to be had from changing the uppipe. If you do decide to change the uppipe, change it if you ever change the headers. It's too much work to take the headers off for such minimal gains. You should consider a fuel pump. I don't think I saw that in your list.
Yea def a fuel pump
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Old 04-27-2014, 07:41 PM   #10
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-yes Fuel pump as even the good ones are cheap
-yes COBB DP
-yes Some sort of intake
- IMO the UP will gain you a little quicker spool and a few HP but with the good DP it will be worth it.....be sure to port match the headers to the UP and UP to the turbo.

Im not a fan of EBC because they are electronic and you cant fix them in the middle of nowhere like a manual, but if your going to have multiple maps with different boost settings then you have to go EBC.

The EWG is optional IMO unless your going aftermarket turbo or really turning up the boost 19-20+psi on the stocker. If you really feel you need the EWG just pay to have it piped back into the DP after the cat, and if you think you will get flagged for it during emissions testing keep the stock IWG on the turbo and just swap the boost lines back to it for inspection. Get a IWG-brace and clamp it shut when your running the EWG and take it off when going for inspection. Another option is the get flanges or v-bands on the DP after the cat and make a removable section for the EWG thats has caps/plugs to keep the EWG on the down low during emissions while running the stock IWG. It will cost a few hundred bucks for the fab time and piping bits but should not have any issues passing an emissions sniffer.

Id recommend the Ultamite Racing UP/catted-DP if your going to go external and want to recirculate it...its better quality and done & done with a 38mm WG and cheaper then buying it separate then fabbing it to recirculate.

http://www.ultimate-racing.com/xcart...cat=102&page=1
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Old 04-27-2014, 07:50 PM   #11
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What do you mean by can't fix an ebcs in the middle of nowhere? Why would you need to? He doesn't "need" an intake either.
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Old 04-27-2014, 08:05 PM   #12
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Edit: just saw you have a 2012, you have a while befire having to deal with smog
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Old 04-27-2014, 08:25 PM   #13
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Ok so some very good points being made here. My main reason for the EWG was for boost creep. Do you guys think without it will be fine without it? Will the boost solenoid help with this?

Will add fuel pump

Now I'm thinking
COBB TBE
COBB SF INTAKE
possibly uppipe without EWG or even no uppipe
Fuel pump
Boost solenoid
Protune

Your right I don't have to deal with emission for a while I'm just going to go ahead and do TBE.
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Old 04-27-2014, 08:47 PM   #14
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Quote:
Originally Posted by Dillinja666 View Post
Edit: just saw you have a 2012, you have a while befire having to deal with smog
You in San Diego?
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Old 04-27-2014, 11:16 PM   #15
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Quote:
Originally Posted by codesoccer View Post
What do you mean by can't fix an ebcs in the middle of nowhere? Why would you need to? He doesn't "need" an intake either.
You can't fix blown electronics, and if a wire to it is bad trouble shooting it is a PITA if your in the middle of nowhere with out tools and a test light. If a manual BC is acting weird it's either a bad hose or a gunked up/sticking check ball, witch either are fairly easy to fix.

That's the main reason why I prefer MBC over EBC
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Old 04-27-2014, 11:36 PM   #16
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Quote:
Originally Posted by dangerousatom View Post
You can't fix blown electronics, and if a wire to it is bad trouble shooting it is a PITA if your in the middle of nowhere with out tools and a test light. If a manual BC is acting weird it's either a bad hose or a gunked up/sticking check ball, witch either are fairly easy to fix.

That's the main reason why I prefer MBC over EBC
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Old 04-27-2014, 11:41 PM   #17
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Your worried about California and the laws regarding emissions... So you don't want to change your exhaust (which is perfectly legal), but your more than willing to convert to external waste gate and an aftermarket downpipe (both of which are illegal).. Something doesn't add up here..

To summit up. Post cat exhaust systems are fine with emissions. Modifying anything precat including removing the catalytic converters is not legal by any means.
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Old 04-28-2014, 12:06 AM   #18
kryptea
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Your worried about California and the laws regarding emissions... So you don't want to change your exhaust (which is perfectly legal), but your more than willing to convert to external waste gate and an aftermarket downpipe (both of which are illegal).. Something doesn't add up here..

To summit up. Post cat exhaust systems are fine with emissions. Modifying anything precat including removing the catalytic converters is not legal by any means.
You have a valid point... I guess I thought I could hide it more if I had stock exhaust and it was a bit more quiet.
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Old 04-28-2014, 12:11 AM   #19
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Quote:
Originally Posted by kryptea View Post
You have a valid point... I guess I thought I could hide it more if I had stock exhaust and it was a bit more quiet.
You need the exhaust. I'm running a full cobb turbo back and it's not loud at all. Sounds very nice. While not any huge gains to be had, you will pick up some power. Just swap the downpipe out every two years and smog. Should be fine.
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Old 04-28-2014, 12:16 AM   #20
kryptea
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It's just hard biting the D*** and spending 1800 on the full TBE F*** it.!!! My mind is made. But to my other only question not answered. Will boost creep be a possible issue without the EWG? Will a boost solenoid fix this issue just as well?
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Old 04-28-2014, 12:20 AM   #21
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Quote:
Originally Posted by kryptea View Post
It's just hard biting the D*** and spending 1800 on the full TBE F*** it.!!! My mind is made. But to my other only question not answered. Will boost creep be a possible issue without the EWG? Will a boost solenoid fix this issue just as well?
Boost control solenoid and a good tune will solve that issue just fine. I'm using grimmspeed solenoid with my vf22 05 Sti. Had it protuned with Cobb accessport. No issues.
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Old 04-28-2014, 12:30 AM   #22
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Well this saves me some dough. Thanks fellas
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Old 04-28-2014, 11:54 AM   #23
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I've been worried about boost creep issues as well (I'm going catless DP), and I did my research on the forums here. It seems to me that at your current intended level, EWG will not be necessary and might even be a bit of overkill. From what I've seen, any tuner worth his salt is going to compensate for any boost creep your car may experience. Having an EWG, (or in my case, a ported IWG) will just give the tuner more cushion for pushin' the boost up before he has to start compensating for creep, so you can maybe squeeze a bit more power out of the turbo, but at the cost of a few extra $$$ and having to deal with a noise you hate.
I say axe the EWG for now.
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Old 04-28-2014, 12:18 PM   #24
kryptea
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Yea I have decided to just can it for now. I am going to get the PnP grimmspeed stockers and I may just get a sweet uppipe to throw on while it's all apart. Maybe I will just port the IWG as well. I will consult with my tuner and see what they recommend.
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Old 04-28-2014, 12:40 PM   #25
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Compare the cost of buying an UP and PnP'ing your stockers vs just buying a new set of headers. A few headers come with an integrated up-pipe all as one piece. That's the route I'll be taking.
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