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Old 02-04-2017, 05:07 PM   #1
Tom Martin
Scooby Newbie
 
Member#: 461806
Join Date: Jan 2017
Chapter/Region: NWIC
Location: Central WA, Wenatchee area
Vehicle:
'17 WRX
Dark grey

Question Yep, another newbie

OK, I had a 2010 WRX STi. A fun car, I liked it a lot.
Now years later I bought a 2017 WRX. It's a nice car, I got rid of a Cad ATS V because it's absolutely NO GOOD in snow. In the winter my Z06 goes in the garage till spring.
Now, I'd like to modestly mod my WRX. I'm not going to race it in any way except the once in a while "stoplight grand prix".
I had a well known tuner tell me to just get his Cobb and tune to pick up an additional 60 HP and not to do another thing to my car.
I'd like to have a little more sound, maybe just different mufflers and maybe a K&N CAI.
1. Why would a modified exhaust system be a bad thing?
2. Why would a CAI be a bad thing?
3. How difficult is it to install a Cobb Accusport?
4. How difficult is it to download a "tune"? I'm in no way a computer geek!!
5. Is it likely to be able to pick up 60 HP with the Cobb and a tune?
I really wish you people would use a lot less acronyms and take the time to write out the part you're talking about. It took me about a week to finally realize the a BOV was a Blow Off Valve.
As far as I know I'm nowhere near a Subaru tuner. I live in central Washington near Wenatchee.
Can somebody who really knows try to answer my questions in terms that even I can understand?
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Old 02-04-2017, 05:40 PM   #2
GlarryHoodDIT
Scooby Specialist
 
Member#: 460907
Join Date: Jan 2017
Chapter/Region: RMIC
Location: Colorado
Vehicle:
2016 WRX
Phatron Tuned

Default

Congrats on the purchase!

1. It's not unless you are modifying the J/Downpipe without an accompanying tune. Catback/axelbacks are fine on the stock ecu, but anything past that needs a tune or engine damage will occur. Axelbacks are exhausts from the rear axel back, catbacks go from the midpipe back (the next pipe from the axelback), turbobacks go from the exhaust header manifold back - starts with the J Pipe and goes into the Downpipe then the catback on our cars.
2. It's not a bad thing it's just not necessary. Your stock intake system is more than capable of performing at these power levels, general consensus is below 400whp the stock system is completely adequate. If you like the noise then go for it, but it will accomplish little else that couldn't be done with the stock airbox at these power levels.
3. Easy as pie. There's a ton of youtube videos about how to do it, takes 5 minutes on a bad day.
4. Easy as pie. Go to Cobb's website, pick out the appropriate map (tune) and press download. Drag it into AP Manager and then flash it to your car. Make sure you are following the map notes (modification specifications) exactly as the maps were only tested using those specific mods. Tons of youtube videos on this too. Steemax is a member here with a Youtube channel and put up a really good FAQ called "How to tune your car" or something really similar to that. Search for it.
5. Debatable and depends on your tuner, if you are going with an OTS map then they put the expected gains in whp and wtq in the map notes. They go with a percentage rather then a specific whp number, and it's only speculation as what your car runs without actually putting it on the dyno.
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Old 02-04-2017, 05:40 PM   #3
EndOfLine
Scooby Newbie
 
Member#: 410366
Join Date: Jan 2015
Chapter/Region: Tri-State
Location: woodbury heights, NJ
Vehicle:
2009 wrx STI hatch
White

Default

First off go read Unabomber's stickies. Alot of good information and well worth the reading. Installing an accessport is literally just connecting the OBD 2 connector to your OBD2 port and following the accessport prompts. If you get the v3 accessport and what to mount it in your car there's a whole lot of options for that and entirely how you want to set it up. Downloading a tune from online (I'm assuming from cobbs site) is super easy. Find the tune that works with your mods (seriously read the freaking patch notes) and download it. Install the accessport manager and connect your access port to your computer, and transfer your tune via the manager. All of the instructions for doing so are on cobbs site.

60hp (do you mean whp or crank hp?) on a wrx is not going to be obtainable by just an accessport and tune.


But seriously go read unabomber's stickies, and then re-read them.
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Old 02-04-2017, 05:51 PM   #4
GlarryHoodDIT
Scooby Specialist
 
Member#: 460907
Join Date: Jan 2017
Chapter/Region: RMIC
Location: Colorado
Vehicle:
2016 WRX
Phatron Tuned

Default

Quote:
Originally Posted by EndofLine
60hp (do you mean whp or crank hp?) on a wrx is not going to be obtainable by just an accessport and tune.
According to the maps notes for Cobb OTS maps, stage 1 had peak gains of +8.5%hp and tq (+22.5 hp/tq) and max gains of +15%hp and tq (40.2 hp/tq) on 93 Octane. So a good tuner with 93 octane could probably make an extra 20bhp over an OTS map. That would probably require a Pro Tune or really good E tune though.
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Old 02-04-2017, 06:10 PM   #5
EndOfLine
Scooby Newbie
 
Member#: 410366
Join Date: Jan 2015
Chapter/Region: Tri-State
Location: woodbury heights, NJ
Vehicle:
2009 wrx STI hatch
White

Default

Quote:
Originally Posted by GlarryHoodDIT View Post
According to the maps notes for Cobb OTS maps, stage 1 had peak gains of +8.5%hp and tq (+22.5 hp/tq) and max gains of +15%hp and tq (40.2 hp/tq) on 93 Octane. So a good tuner with 93 octane could probably make an extra 20bhp over an OTS map. That would probably require a Pro Tune or really good E tune though.
I shouldve clarified, by tune i meant OTS tune, thats my bad, but i still stand by my statement. Theres still information the OP shouldve included in his questions, IE does he want 60BHP or 60WHP. Is he going to get it protuned/etuned or just an AP and OTS map. OP should still read the stickies, as should every "newbie".
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Old 02-04-2017, 06:14 PM   #6
GlarryHoodDIT
Scooby Specialist
 
Member#: 460907
Join Date: Jan 2017
Chapter/Region: RMIC
Location: Colorado
Vehicle:
2016 WRX
Phatron Tuned

Default

Totally, I wasnt meaning to call you out or anything. Just letting OP know that you dont need bolt ons for 60bhp, 60whp is another story for sure.
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Old 02-04-2017, 06:19 PM   #7
EndOfLine
Scooby Newbie
 
Member#: 410366
Join Date: Jan 2015
Chapter/Region: Tri-State
Location: woodbury heights, NJ
Vehicle:
2009 wrx STI hatch
White

Default

Quote:
Originally Posted by GlarryHoodDIT View Post
Totally, I wasnt meaning to call you out or anything. Just letting OP know that you dont need bolt ons for 60bhp, 60whp is another story for sure.
Oh no man haha i didnt take it that way either lol. i agree 100% with what you said, but theres just some info the OP needs to provide so he can get the right information and not spend money on something they will end up regretting or not being fully satisfied with.
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