|
|
|
|
Thread Tools | Display Modes |
09-16-2012, 11:51 PM | #1 |
Scooby Newbie
Member#: 324363
Join Date: Jun 2012
Location: VA
Vehicle:2009 WRX SSM |
Cobb SF Intake W/O Accessport
I was looking into getting a Cobb SF Short Ram intake for my 09 WRX Sedan. Do i need to have the access port too?
I don't want to have to run with the check engine light on or mess my car up in any way so i decided to ask here first!
* Registered users of the site do not see these ads.
|
09-17-2012, 12:01 AM | #2 |
Former Vendor
Member#: 265606
Join Date: Nov 2010
Chapter/Region:
NESIC
Location: Manchester, NH
|
this intake requires tuning. you dont need an accessport, but you need to tune for it.
Wicked M@ |
09-17-2012, 12:07 AM | #3 |
Scooby Newbie
Member#: 324363
Join Date: Jun 2012
Location: VA
Vehicle:2009 WRX SSM |
Great thanks. I guess that means don't run long w/out getting it tuned or getting the AP?
|
09-17-2012, 12:11 AM | #4 |
Scooby Guru
Member#: 51961
Join Date: Jan 2004
Chapter/Region:
RMIC
Location: Broomfield, CO
Vehicle:2005 STi 2012 WRX |
^ What he said
|
09-17-2012, 12:11 AM | #5 |
Scooby Guru
Member#: 51961
Join Date: Jan 2004
Chapter/Region:
RMIC
Location: Broomfield, CO
Vehicle:2005 STi 2012 WRX |
|
09-17-2012, 12:28 AM | #6 |
Scooby Newbie
Member#: 324363
Join Date: Jun 2012
Location: VA
Vehicle:2009 WRX SSM |
That's what I thought. Thanks!
|
09-18-2012, 01:43 PM | #7 |
Scooby Specialist
Member#: 262760
Join Date: Nov 2010
Chapter/Region:
MWSOC
Location: Lake in the Hills, ILLnoise
Vehicle:2011 WRX Hatch Limtd Satin White Pearl |
Some intakes are acceptable to run without a tune, such as the K&N. That intake doesn't change the diameter, therefore flow dynamics are unchanged, meaning no tune is required. Is it recommended? Oh yeah. Cobb does require a tune, so please consider your engine management before doing this or any intake.
|
09-18-2012, 02:50 PM | #8 | |
Scooby Guru
Member#: 51961
Join Date: Jan 2004
Chapter/Region:
RMIC
Location: Broomfield, CO
Vehicle:2005 STi 2012 WRX |
Quote:
ALL intakes for the 08+ WRX/STi need a tune...ALL of them, there are no exceptions. None of them measure close enough to stock to work with the stock scaling. |
|
09-18-2012, 02:54 PM | #9 |
Scooby Specialist
Member#: 70151
Join Date: Sep 2004
Location: New Jersey Shore
Vehicle:2011 WRX Limited Black |
|
09-18-2012, 03:04 PM | #10 |
Scooby Specialist
Member#: 90642
Join Date: Jul 2005
Chapter/Region:
NESIC
Location: Pineapple under the Sea, RI
Vehicle:WKD Everything |
this is absolutely my findings as well for 08+ cars.
Wicked M@ |
09-18-2012, 03:15 PM | #11 |
Scooby Specialist
Member#: 83266
Join Date: Mar 2005
Chapter/Region:
NESIC
Location: Springfield, MA
Vehicle:2011 WRX Sedan SWP |
Save your 275$ and buy the accessport. Stage 1 with that will produce a bigger smile than the intake. Trust me.
|
09-18-2012, 05:47 PM | #12 |
Former Vendor
Member#: 33174
Join Date: Feb 2003
Chapter/Region:
RMIC
Location: Salt Lake City Utah
Vehicle:Chat Email or Phone! 888-457-2559 |
For any 08+ WRX and STi any intake changes require a tune. We did testing on this a few years ago when trying out different stuff on 08+ cars and ran into it the sensitivity issue of these cars and air flow.
This dyno plot shows the AFR curve, however we ended up having to richen the car out to correct for the change in flow when we did a drop in. I dont remember exactly the #'s but it was along the line of .5-.75:1 lean out when going from OEM to drop in high flow filter. So in a nut shell, stick with OEM air filter and airbox unless you plan on tuning for it. Kirill RallySportDirect.com |
09-18-2012, 06:31 PM | #13 | |
Scooby Newbie
Member#: 303906
Join Date: Dec 2011
Chapter/Region:
NESIC
Location: Porter Square, Slumerville
Vehicle:2011 WRX Sedan Spark Silver Metalic |
Quote:
|
|
09-18-2012, 06:41 PM | #14 |
Former Vendor
Member#: 33174
Join Date: Feb 2003
Chapter/Region:
RMIC
Location: Salt Lake City Utah
Vehicle:Chat Email or Phone! 888-457-2559 |
We do our best to educate our customers on stuff like this, however its ultimately their decision on what to get and how to modify their car.
Some manufactures state that tuning is not required based on how they designed the intake system. And others say they do, so we list information as the manufactures to stay consistent between them and us as we have not tested EVERY system on the market. When a customer calls in and asks about it, our reps will specify that we suggest a tune for 08+ WRX's and STi's if any intake changes are made of how air flows over the MAF sensor. Kirill RallySportDirect.com |
09-18-2012, 06:46 PM | #15 | |
Scooby Specialist
Member#: 262760
Join Date: Nov 2010
Chapter/Region:
MWSOC
Location: Lake in the Hills, ILLnoise
Vehicle:2011 WRX Hatch Limtd Satin White Pearl |
Quote:
|
|
09-18-2012, 06:55 PM | #16 |
Scooby Guru
Member#: 51961
Join Date: Jan 2004
Chapter/Region:
RMIC
Location: Broomfield, CO
Vehicle:2005 STi 2012 WRX |
Here's a figure showing the percent change in MAF readings for 6 different aftermarket intakes versus the stock intake. The K&N IS one of those being plotted here.
If you think a 10%+ lean shift at WOT is fine, then more power to you, but I don't, and I wouldn't go around telling other people that they don't need a tune for it either. The Perrin intake is also one of those being plotted here, it's actually SMALLER diameter that stock, yet it too has a 10%+ lean shift at WOT. Just the other day one of the Perrin reps posted in a thread in the Newbie forum and backed up that statement, the Perrin intake runs 10% lean at WOT on the stock tune. They are of the opinion that a 10% shift is not enough to warrant concern since the stock tune runs so rich anyway, but I don't agree with that sentiment. |
09-18-2012, 07:24 PM | #17 |
Scooby Specialist
Member#: 83266
Join Date: Mar 2005
Chapter/Region:
NESIC
Location: Springfield, MA
Vehicle:2011 WRX Sedan SWP |
These cars are so touchy, pretty much anything aftermarket you install, has to be tuned. Like I said, get the AP, and get OTS maps for it. I STILL got a protune, but if you really wanna save some cash (and run a risk over time) just get the AP. Newer gen subaru's are too damn touchy not too. I remember on my bugeye when I had a catless blitz nur spec tbe. A tune was not needed. The car ran pig rich, which was fine. Albeit I wasn't getting the most potential out of the exhaust without the tune, I could still run it without issue. These days, you just can't.
|
09-18-2012, 09:50 PM | #18 | |
Scooby Specialist
Member#: 262760
Join Date: Nov 2010
Chapter/Region:
MWSOC
Location: Lake in the Hills, ILLnoise
Vehicle:2011 WRX Hatch Limtd Satin White Pearl |
Quote:
I've done my part to save face. Apologies if this wasn't clear. Nonetheless, a 10% increase in lean spots on an already grossly lean OEM tune is not acceptable by any standard. |
|
09-18-2012, 10:51 PM | #19 |
Scooby Guru
Member#: 51961
Join Date: Jan 2004
Chapter/Region:
RMIC
Location: Broomfield, CO
Vehicle:2005 STi 2012 WRX |
I didn't catch that in your post, no worries. I guess K&N is like Perrin in that they assume a 10% lean shift isn't enough to warrant concern on a stock tune.
|
09-19-2012, 07:28 AM | #20 |
Scooby Specialist
Member#: 262760
Join Date: Nov 2010
Chapter/Region:
MWSOC
Location: Lake in the Hills, ILLnoise
Vehicle:2011 WRX Hatch Limtd Satin White Pearl |
That's truly unbelievable. Anyways, I strongly look down on those who hand out bad info just to bump their post count. The last thing I want to do is spread bad info. Either way, Perrin and presumably K&N's stance on this lean spot is amazingly sad.
Last edited by Decipher; 10-24-2012 at 05:51 PM. |
10-24-2012, 02:51 PM | #21 |
Scooby Newbie
Member#: 336002
Join Date: Oct 2012
Vehicle:2012 WRX Limited White |
good advice
I just ordered a cobb sf intake and thought that it was not necessary to tune it, but this thread has inspired me to order the accessport. I want to do this car right!
|
10-24-2012, 05:51 PM | #22 |
Scooby Specialist
Member#: 262760
Join Date: Nov 2010
Chapter/Region:
MWSOC
Location: Lake in the Hills, ILLnoise
Vehicle:2011 WRX Hatch Limtd Satin White Pearl |
Great choice. You won't regret it.
|
10-24-2012, 06:05 PM | #23 |
Scooby Newbie
Member#: 333307
Join Date: Sep 2012
Chapter/Region:
South East
Vehicle:2013 STI WRB |
Pretty sure MAF diameter changes, so in order for your MAF to read correctly, you need a tune / or access port to rescale for the car to run properly.
|
10-24-2012, 08:01 PM | #24 | |
Scooby Guru
Member#: 51961
Join Date: Jan 2004
Chapter/Region:
RMIC
Location: Broomfield, CO
Vehicle:2005 STi 2012 WRX |
Quote:
http://www.cobbtuning.com/Subaru-SF-...t-p/715100.htm It's even highlighted in bold red print... |
|
10-25-2012, 09:51 AM | #25 |
Scooby Specialist
Member#: 245218
Join Date: Apr 2010
Chapter/Region:
South East
Location: FL
Vehicle:2013 STI Limited |
You should just install it and report back here after 5000 miles and let us know if your engine is still alive.
|
Thread Tools | |
Display Modes | |
|
|