Overboost Issues
#21
I mean, in the end Ken, you've got 4 options:

#1: Get your car tuned by a Pro.
#2: Put your stock intake back and see if the stock intake 93octane map makes the overboost problem go away.
#3: Switch to the 91 octane map (which has a lower boost target) and see if the overboost problem goes away.
#4: Go back to stock, sell your accessport.

Logs might help us figure out which of those to do, but in the end it's going to be one of those 4.

(ok, 5: download AccessTuner Race and alter the wastegate duty cycle but let's be real, you're not going to do that and probably shouldn't.)
1987 Oldsmobile Cutlass 442
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#22
Damn, hate all of those options. Again, how do i make this google doc thing work for access to the log files?
2019 Mazda CX-5 (TURBAH)
(X)2016.5 Mazda CX-5
(X)2010 GTI
(x)2011 Lancer Evolution GSR
(x)2009 Lancer Ralliart
(x)2006 Acura RSX
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#23
Upload your spreadsheet to google docs. Open it. In the upper right hand corner there will be a "share" button.

Click on that, make the doc public, then paste the link (which will be shown in the "sharing" menu) here.
1987 Oldsmobile Cutlass 442
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#24
Awesome, thanks.

I highlighted in red towards the end where the knocksum went up.

https://docs.google.com/open?id=0BycdSTK...1BZaWwxblk
2019 Mazda CX-5 (TURBAH)
(X)2016.5 Mazda CX-5
(X)2010 GTI
(x)2011 Lancer Evolution GSR
(x)2009 Lancer Ralliart
(x)2006 Acura RSX
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#25
Cells 87-94 worry me. 28psi?

[Image: tumblr_lbqg10tZyq1qbwtq5o1_500.jpg]

also, further down, your WOT pull....27psi, 100% wastegate duty cycle, looks icky to me. Change your map.
1987 Oldsmobile Cutlass 442
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#26
Yeah, i figured as much.

Just for comparison sake, here is a log i ran back in the spring/summer. Could it just be the cold?

*should also add, i shifted into fourth toward the end of this one*

https://docs.google.com/open?id=0BycdSTK...U5Ca3JLLTA

Thanks for all of the help, borderline freaking out over here.
2019 Mazda CX-5 (TURBAH)
(X)2016.5 Mazda CX-5
(X)2010 GTI
(x)2011 Lancer Evolution GSR
(x)2009 Lancer Ralliart
(x)2006 Acura RSX
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#27
Ask your tuner to increase the wastegate duty cycle before it overruns. An experienced tuner will be able to "bleed" off boost overrun and land you at your intended boost without inducing much if any lag at all. That should solve your entire issue.

That said, I also saw further down issues with some of your tuning at off-throttle and part-throttle. Send that entire log, the whole tune needs to change. If they have access to DecelLTFT and STFT they can clean it up and improve your transient throttle response as well as in-between shifts, thereby reducing the negative timing adjustments.

Edit: Also adjust your damn TPS sensor, its annoying.
2020 Ford Raptor
2009 Z06
1986.5 Porsche 928S
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#28
Dj, there is no tuner. He is using a beta map from COBB. It has not been on a dyno or in the hands of a tuner. He cannot ask the "tuner" to do anything.
2019 Accord Sport 2.0 A/T
2012 Civic Si - Sold
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#29
Well he could ask a tuner, if he had one. Big Grin
1987 Oldsmobile Cutlass 442
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#30
So was the older run in the warm even good then? Never ran into any issues then...
2019 Mazda CX-5 (TURBAH)
(X)2016.5 Mazda CX-5
(X)2010 GTI
(x)2011 Lancer Evolution GSR
(x)2009 Lancer Ralliart
(x)2006 Acura RSX
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#31
Well, switched it to stock and was boosting to high 25's. Switched to 91oct map and boosted again to 28. I am going to switch back to stock intake and see what happens then.
2019 Mazda CX-5 (TURBAH)
(X)2016.5 Mazda CX-5
(X)2010 GTI
(x)2011 Lancer Evolution GSR
(x)2009 Lancer Ralliart
(x)2006 Acura RSX
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#32
Agree with DJ, get your WG settings adjusted.

Are you throwing a CEL?

I know I overboosted up to 31 in the GSX sometimes during the winter months due to the air......but it was fun Smile

Plus you boosted up to 27/28 in your summer log to.

What is Stock boost supposed to be anyway? 19-21?

Also buy a wideband.....like right now.
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#33
Well, took the car to work today with the stock intake in and the Stage1 93 octane map, no intake. Still boosted to 28 and hit cutoff. I guess i'll try the 91 map and see what happens?
2019 Mazda CX-5 (TURBAH)
(X)2016.5 Mazda CX-5
(X)2010 GTI
(x)2011 Lancer Evolution GSR
(x)2009 Lancer Ralliart
(x)2006 Acura RSX
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#34
Ken Wrote:Well, took the car to work today with the stock intake in and the Stage1 93 octane map, no intake. Still boosted to 28 and hit cutoff. I guess i'll try the 91 map and see what happens?

Get data logs of this and of the 91 map and send them both to Cobb, along with relevant information about your car, because they'll want to see it.
1987 Oldsmobile Cutlass 442
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#35
Would it be dumb to try the one with and intake specified in it? Since it would be expecting more air?
2019 Mazda CX-5 (TURBAH)
(X)2016.5 Mazda CX-5
(X)2010 GTI
(x)2011 Lancer Evolution GSR
(x)2009 Lancer Ralliart
(x)2006 Acura RSX
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#36
Ken Wrote:Would it be dumb to try the one with and intake specified in it? Since it would be expecting more air?

Since it is not a Cobb intake, but an intake with an unknown diameter and flow rate, then yeah, I expect that data would be mostly worthless to them.
1987 Oldsmobile Cutlass 442
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#37
Getting no response from Cobb so far (i sent them an e-mail right before i started this thread). I ran a couple of logs with the Stage 1 91 octane maps. Seemed better, i never cut cutoff even as i was essentially beating on it for a while. i did see a couple blips of 28 however, although unfortunately i wasn't logging when they happened. It seems that the tune is just absolute crap for runs in fourth gear starting at about 4K.

I really appreciate all the help you guys are giving me, if you guys wouldn't mind taking a look at these two and see if they are better.

https://docs.google.com/open?id=0BycdSTK...3pmYkoySEE
https://docs.google.com/open?id=0BycdSTK...jRzM2h5bEk

The third gear pull looks good boost wise, a little concerned by the three 3's on the knocksum and the 99 WGDC values for a bit.
2019 Mazda CX-5 (TURBAH)
(X)2016.5 Mazda CX-5
(X)2010 GTI
(x)2011 Lancer Evolution GSR
(x)2009 Lancer Ralliart
(x)2006 Acura RSX
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#38
Cobb responded with the following to my first log i sent:

"There might be an air leak that could be causing the vehicle to over boost. I also would like for you to check if the vacuum line on your fuel pressure regulator is still attached. Evo X tends to pop those vacuum lines off if there are no zip ties."

Is this valid? And if so, where exactly am i looking?
2019 Mazda CX-5 (TURBAH)
(X)2016.5 Mazda CX-5
(X)2010 GTI
(x)2011 Lancer Evolution GSR
(x)2009 Lancer Ralliart
(x)2006 Acura RSX
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#39
Ken Wrote:Cobb responded with the following to my first log i sent:

"There might be an air leak that could be causing the vehicle to over boost. I also would like for you to check if the vacuum line on your fuel pressure regulator is still attached. Evo X tends to pop those vacuum lines off if there are no zip ties."

Is this valid? And if so, where exactly am i looking?
Seems like it. Or, I should say, it seems plausible and an extremely easy fix if it is the cause.
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#40
Just incase you dont know, the fuel pressure regulator is a rising rate regulator, so as boost rises, fuel pressure rises. I am not sure what the ratio is, but i'd assume 1:1, so every 1 PSI rise in boost = 1PSI rise in Fuel Pressure over your base fuel pressure. If the vac line is leaky or disconnected you wont have the fuel needed to feed your injectors at higher boost levels, thus your ECU says ZOMG WTF.

Air leak could play a role by making your FPR not have the boost pressure to raise the FP as stated above.
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