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04-13-2008, 01:46 AM | #1 |
Scooby Specialist
Member#: 170790
Join Date: Feb 2008
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BAIC
Location: Sacramento
Vehicle:2006 wrx cobb stg. 2 cgm |
Just hitting 14 psi on cobb stage 2 map instead of 16psi
Before I bought an accessport for my cobb turbo back exhaust i did some research and found out that i would be hitting 16 psi of boost. After i installed the accessport i noticed a big difference in power with the stage 2 reflash, but i'm only hitting 14 psi. Any idea why that is happening? What is the best performance map?
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04-13-2008, 01:52 AM | #2 |
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What gear are you hitting 14psi? I believe you should only hit 16 briefly in 4th through 6th before it tapers down to around 14 before redline. I could be wrong. See what some one with more experience with the AP has to say.
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04-13-2008, 01:58 AM | #3 | |
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Quote:
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04-13-2008, 02:01 AM | #4 |
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Vehicle:2006 wrx black |
go external wastegate. I am.
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04-13-2008, 02:07 AM | #5 |
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i noticed the other day i wasnt hittin target boost either. got bored and did a compression test and found #2 cyl down 20psi of compression. if ya got time and the know-how, it wouldnt be a bad idea, seeing as how the ringlands are soo damn fragile in our (wrx) motors.
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04-13-2008, 02:26 AM | #6 |
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You can try adjusting your wastegate arm a little. Start off with half of a turn tighter and see if that helps you at all.
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04-13-2008, 02:32 AM | #7 |
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cobb stage2 for wrx is ~14.7 to ~15.2 psi...
16-17 would be the sti's |
04-13-2008, 02:37 AM | #8 |
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When my car (06 wrx) was cobb stg2, I was hitting 18psi all day on the OTS map. Weird how different cars react so differently to the same maps..
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04-13-2008, 02:56 AM | #9 |
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^^catless perhaps
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04-13-2008, 03:18 AM | #10 |
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Yep, with my Cobb OTS map and catless TBE I run 16.4psi. (reading off the AP)
EDIT: this is on the wrx 2.0L |
04-13-2008, 03:23 AM | #11 |
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Hmmm Iam running 18.5-19psi
Stage 2 STi Catless 3" TBE |
04-13-2008, 04:17 AM | #12 |
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04-13-2008, 04:29 AM | #13 |
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Only hitting 14psi may have something to do with the wonderful gas we use here in Cali, 91 octane sucks....
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04-13-2008, 04:38 AM | #14 |
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04-13-2008, 08:48 AM | #15 |
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Your cheap gas isnt going too help unfortunately. What are you using to measure boost, stock gauge, ap? Mine was boosting around the same until I had it protuned....
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04-13-2008, 11:39 AM | #16 |
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The 02-05 target boost is 15.8psi @ Cobb Stage 2. However with the 2.5L block Cobb made some changes to the maps. The 06-07 target boost 15.2psi +/- 0.7psi @ Cobb Stage 2 (Link to Cobbs 06-07 91oct map notes). So @ 14.5psi you are within what Cobb considers normal for your vehicle.
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04-13-2008, 12:13 PM | #17 |
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I thought it took a couple of days for the car to learn the tune.....so maybe the boost will raise in a couple of days
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04-13-2008, 12:52 PM | #18 |
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04-13-2008, 01:02 PM | #19 |
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i am using my accessport to measure the boost, So is that okay for an 06 wrx? What do you guys think about boost controllers?
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04-13-2008, 06:30 PM | #20 |
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MBC's are a bad idea unless you really need it and know what you are doing.
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