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Old 06-21-2009, 05:55 AM   #1
Scooby Specialist
Member#: 188641
Join Date: Sep 2008
Chapter/Region: MAIC
Location: State College, PA
2005 OBP WRX, 03 EP3
Juiced 93 Ranger

Default Using the Cobb VF39 map with a VF43

I am looking at putting a VF43 on my 05 WRX and running the Cobb OTS VF39 map. I have searched on this and get all sorts of answers-some people say it will work fine, some say it won't, etc etc... I'd just like some feedback from people who have actually run their cars with this map and a VF43.

How long did you use the OTS map before you got a protune (or are you still using it)? Any issues at all with the car--running smoothly/etc? Any other info you'd find to be helpful to someone wanting to do the same setup?

Of course I have all the supporting mods--UP/TBE, DW C-Spec 565s, Walbro, STI TMIC. I have access to a VF39 WG actuator if using that would make a difference in how it ran with the map. I plan to use the OTS map for a few months until I get protuned....

Thanks in advance
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Old 06-21-2009, 09:39 PM   #2
Scooby Guru
Member#: 145105
Join Date: Apr 2007
Chapter/Region: MAIC
Location: Middle River, Maryland
2015 WRB WRX Limited
2007 WRX Limited (sold)


When are you getting protuned?

Call your tuner and have them customize a map for you so that you can get to their shop to get tuned.

The OTS map sucks anyways so I wouldn't and DIDN'T run it on my car. I upgraded to the VF43 turbo and had Jorge from P&L customize a map for me so that I could get to work for about a week until I could get tuned. I still didn't boost (and I think the boost was limited also anyways)

Again - DO NOT just run the Cobb OTS Map (VF39 map) it's not worth the problems it MAY cause.

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Old 06-22-2009, 01:47 AM   #3
Scooby Specialist
Member#: 104078
Join Date: Jan 2006
Chapter/Region: MWSOC
Location: Missouri
2013 WRX


agreed with asking the tuner for a base map to run off of, the main concern is the injectors i believe...
i ran no boost until my tune as well

+eleventy billion for JORGE AT P&L
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Old 06-22-2009, 01:47 AM   #4
👏 Big Ron 👏
Member#: 18062
Join Date: Apr 2002
Chapter/Region: MAIC
Location: I can save you a ton of cash
on car parts so PM
me b4 j00 buy


It matters now what we say, it matters what Cobb says, ask them. And no I'm not kidding even a little bit....call them. Bob Internetuser will not buy you a new motor when he leads you down the path of destruction, you might want to rely on the manufacturer more than some yahoo on the internet.
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