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07-21-2012, 04:28 PM | #1 |
Scooby Newbie
Member#: 321019
Join Date: May 2012
Chapter/Region:
South East
Location: Knoxville, TN
Vehicle:2005 ImprezaWRXsedan WRB |
Log showing problem?
Here is a log I just recorded today, some of the data doesn't look good. I'm not hitting target boost ether, which I believe is supposed to be +/-1 of 17psi. Just installed the headers, up pipe and downpipe on Wednesday and switch from Stage 1 to Stage 2 map.
Vehicle specs: 2005 Impreza WRX M/T 159,000miles Stock motor, stock turbo, stock intake Tomei-UEL headers w/ up pipe (catless) Invidia- Downpipe Divorced (catless) Grimmspeed- AOS AP- Map: Stage 2 93 v310 3rd gear pull log: https://docs.google.com/spreadsheet/...2JMal96dWQ4YkE Thoughts?
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07-21-2012, 06:07 PM | #2 |
Scooby Specialist
Member#: 285270
Join Date: Jun 2011
Chapter/Region:
NESIC
Vehicle:03 WRX PSM |
Do you have any logs from before the new exhaust?
Where you hitting target boost before? Either way, I'd be going over my new exhaust and checking for leaks. You used new gaskets, right? Plus it's not hard to disturb a dried out vacuum line during an up/down pipe(s) install. Grab a small mirror and have a good look around. Just my .02. Good luck! |
07-21-2012, 06:19 PM | #3 | |
Scooby Newbie
Member#: 321019
Join Date: May 2012
Chapter/Region:
South East
Location: Knoxville, TN
Vehicle:2005 ImprezaWRXsedan WRB |
Quote:
On Stage 1 93 v300, I believe I was hitting 13psi. Don't quite remember specifics other than I did notice that the short time I was running the Stage 1 map, the car performed a lot better over the stock ecu map. Stage 2 has felt even stronger than Stage 1 as it should anyways. But I'm really a newbie when it comes to tuning this stuff. Just really trying to achieve the most boost at WOT on the stock turbo without causing damage. Supposed to be achieving 17psi +/-1 as to what Cobb's notes read on this map. Tightened up every possible exhaust nut and bolt. Yes new gaskets on everything. Even the Grimmspeed 3in DP to smaller exhaust piping adaptor. I've heard that a dirty/bad MAF and O2 sensor could be a problem also. Although I don't know if either two are bad. Thinking about changing the map again to the Stage 2 HWG map and hopefully hit 17psi. Thanks! |
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07-21-2012, 07:42 PM | #4 |
Scooby Specialist
Member#: 285270
Join Date: Jun 2011
Chapter/Region:
NESIC
Vehicle:03 WRX PSM |
Both are true. You did just have the O2 sensor out to swap to the headers, any chance it took damage?
It's never a bad idea to clean your MAF sensor. I do it every other oil change. Just get a can of MAF cleaner, pull the sensor, and honk it down. DO NOT use any other type of cleaner (carb/ electrical conn...) these will destroy the MAF sensor. Did u check for vacuum leaks? The stock inlet is prone to fail on the bottom side right in front of the turbo, prob not your problem, but something to look at and check regularly. I did notice in your log you had a DAM of 15 and a small amount of Fine Knock Learning. How long (miles) had it been since you flashed the new map before doing the log? If there wasn't enough time in between, the ECU hasn't had enough time to "learn" both fueling and timing issues. This means your car could be very sick and it's not showing it in the log, because the ECU was just reset, wiping out its memory. If your going after the HWG map, it might not be a bad idea to flash the Stage 2 91 octane map. It's a little more conservative on the timing side. I'd rather be safe than sorry. Again just my .02 |
07-22-2012, 10:01 AM | #5 | |
NASIOC Vendor
Member#: 4803
Join Date: Mar 2001
Location: Austin, TX
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Quote:
That said, you are underboosting by quite a bit. But, I would still start with the new maps (normal wastegate) and get some additional logs (and go from there). Bill |
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07-22-2012, 10:03 AM | #6 | |
Scooby Newbie
Member#: 321019
Join Date: May 2012
Chapter/Region:
South East
Location: Knoxville, TN
Vehicle:2005 ImprezaWRXsedan WRB |
Quote:
I'll just replace both the MAF and O2 sensor. Did check for vacuum leaks, everything seems to be tight and nothing leaking on the intake side and exhaust side. I flashed to the Stage 2 93 v300 map on the 18th (Wednesday). Took this log on the 21st (Yesterday). So maybe 40 miles. I did notice the DAM of 15 and Fine Knock Learning. I'll switch it today to the Stage 2 91 octane map, and get a log too. Btw, driving last night I had the AP screen showing boost and I noticed that I hit 15.1psi, so at least it's going up. Didn't log it though... |
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07-22-2012, 11:28 AM | #7 |
Scooby Specialist
Member#: 285270
Join Date: Jun 2011
Chapter/Region:
NESIC
Vehicle:03 WRX PSM |
Like Bill said above, go over to Cobb's website and download the newest maps (ver 3.10)
The boys at Cobb took a different approach at the timing tables. It really is a huge difference! It's drag and drop into AP manager, then flash to the car and enjoy! |
07-22-2012, 05:01 PM | #8 |
Scooby Newbie
Member#: 321019
Join Date: May 2012
Chapter/Region:
South East
Location: Knoxville, TN
Vehicle:2005 ImprezaWRXsedan WRB |
Just replace the spark plugs today with OEM NGKs
3rd gear pull log: https://docs.google.com/spreadsheet/...mc&hl=en#gid=0 Went from 3rd to 4th then 5th as you see on the throttle percent. Boost is still barely 13psi even though I random hit 15.1psi driving last night. Is that due to lower ambient air temps? |
07-23-2012, 08:38 AM | #9 | |
NASIOC Vendor
Member#: 4803
Join Date: Mar 2001
Location: Austin, TX
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Quote:
Bill |
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07-23-2012, 08:25 PM | #10 | |
Scooby Newbie
Member#: 321019
Join Date: May 2012
Chapter/Region:
South East
Location: Knoxville, TN
Vehicle:2005 ImprezaWRXsedan WRB |
Quote:
Also I've downloaded the AccessTuner Race beta program to see if I can get this car go to richer. Don't know how to do that exactly. It is running way to lean when transmission is in any gear and vehicle is coasting at any speed (foot off gas pedal). Once a little thottle is applied it goes down to 14.7 area. WOT is 11.2 also if that helps. When I changed my exhaust setup. The inside of the up pipe, downpipe was white. Including the O2 sensor in the downpipe. The spark plugs tips white too. So this motor is running way to hot. Thoughts? I will be replacing the O2 sensor in the Downpipe soon. Is that what the Accessport reads off when looking at 'Air Fuel Sensor 1'? Thanks. |
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07-24-2012, 09:33 AM | #11 | |
NASIOC Vendor
Member#: 4803
Join Date: Mar 2001
Location: Austin, TX
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Quote:
Bill |
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01-13-2013, 11:09 PM | #12 |
Scooby Newbie
Member#: 176046
Join Date: Mar 2008
Chapter/Region:
NWIC
Location: Auburn
Vehicle:2002 WRX Sedan Silver |
Try Running a High Wastegate map if you got rid of or have a high flow cat, see if that helps.
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