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Old 01-21-2013, 07:46 PM   #26
ajmillan
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Originally Posted by Cobb Tuning View Post
You won't be making an economy map per-se, you will be modifying the Stage 2 +SF map. Open that map in ATR (doesn't matter which wastegate map it is - SLWG that you used last will be fine). Go to Boost Control Tables -> Wastegate Duty and select the "Wastegate Duty Cycles (High)" table. Select the entire table with your mouse, hit "E" for edit, and enter 0. The entire wgdc portion of the table, should show zero. Save that map (with a unique name) and then transfer it to the AccessPORT and reflash it to the car. If all of this is done correctly, then it will show 0% "Wastegate Duty" monitor all the time, even at WOT. Get a run to high RPM (if you can do so safely) with this new map.

Bill
Here is the log with 0% wastegate duty and injector duty cycle included.
Let me know what you think

https://docs.google.com/folder/d/0B0...lta3E0dDg/edit
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Old 01-22-2013, 09:04 AM   #27
Cobb Tuning
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Originally Posted by ajmillan View Post
Here is the log with 0% wastegate duty and injector duty cycle included.
Let me know what you think

https://docs.google.com/folder/d/0B0...lta3E0dDg/edit
What was the outside temp when these logs were taken? Not an issue here with IDC and boost levels are somewhat controllable, except at high RPM (but you are not overboosting at high RPM this time). But, this differs from your fuel economy log, so I would expect that these newest logs were taken with warmer temps. If that is the case, then you'll need to wait until it gets colder out and get more logs. Even if boost drops enough with 0% wgdc, you are still not leaving very much of a margin to work with here. A custom tune for cold temps (even the temps you did these logs in) would require 0% wgdc at high RPM. Which means you could still overboost if you experience conditions that increase the chances of boost creep over what was experienced during the custom tune.

Bill
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Old 01-22-2013, 11:37 AM   #28
ajmillan
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Quote:
Originally Posted by Cobb Tuning View Post
What was the outside temp when these logs were taken? Not an issue here with IDC and boost levels are somewhat controllable, except at high RPM (but you are not overboosting at high RPM this time). But, this differs from your fuel economy log, so I would expect that these newest logs were taken with warmer temps. If that is the case, then you'll need to wait until it gets colder out and get more logs. Even if boost drops enough with 0% wgdc, you are still not leaving very much of a margin to work with here. A custom tune for cold temps (even the temps you did these logs in) would require 0% wgdc at high RPM. Which means you could still overboost if you experience conditions that increase the chances of boost creep over what was experienced during the custom tune.

Bill
Temp was around 72 degrees and I also put back the stock intake that seemed to help since with the low wastegate map it wasn't reaching target boost
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Old 01-23-2013, 01:29 AM   #29
ajmillan
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Quote:
Originally Posted by Cobb Tuning View Post
What was the outside temp when these logs were taken? Not an issue here with IDC and boost levels are somewhat controllable, except at high RPM (but you are not overboosting at high RPM this time). But, this differs from your fuel economy log, so I would expect that these newest logs were taken with warmer temps. If that is the case, then you'll need to wait until it gets colder out and get more logs. Even if boost drops enough with 0% wgdc, you are still not leaving very much of a margin to work with here. A custom tune for cold temps (even the temps you did these logs in) would require 0% wgdc at high RPM. Which means you could still overboost if you experience conditions that increase the chances of boost creep over what was experienced during the custom tune.

Bill
A protune in person should take care of the issue correct?
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Old 01-23-2013, 08:49 AM   #30
Cobb Tuning
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A protune in person should take care of the issue correct?
Right now, you are pretty much hitting the boost targets designated by the map at high RPM at 0% WGDC. Once you are at 0% WGDC, you can't do anything else to limit boost via tune. So, given this log was taken in warm temps, it still possible that you will see overboost at high RPM when it is colder out even at 0% WGDC. Which means the tuner would have no control over that. So, really, we need to see the same 0% WGDC log when temps are at the coldest you are going to see. It is possible for the tuner to manipulate the throttle mapping to close throttle at higher RPM to limit boost creep, but that limits performance when it gets warmer out, so you would need to have a couple of maps and switch between them. You may just want to consider putting a catted DP on the car or keep engine speed below 5000 RPM when it is colder out. But, let's see what your 0% WGDC log looks like when it is colder out.

Bill
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Old 01-23-2013, 09:28 AM   #31
ajmillan
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Quote:
Originally Posted by Cobb Tuning View Post
Right now, you are pretty much hitting the boost targets designated by the map at high RPM at 0% WGDC. Once you are at 0% WGDC, you can't do anything else to limit boost via tune. So, given this log was taken in warm temps, it still possible that you will see overboost at high RPM when it is colder out even at 0% WGDC. Which means the tuner would have no control over that. So, really, we need to see the same 0% WGDC log when temps are at the coldest you are going to see. It is possible for the tuner to manipulate the throttle mapping to close throttle at higher RPM to limit boost creep, but that limits performance when it gets warmer out, so you would need to have a couple of maps and switch between them. You may just want to consider putting a catted DP on the car or keep engine speed below 5000 RPM when it is colder out. But, let's see what your 0% WGDC log looks like when it is colder out.

Bill
Did you take a look at my stock intake log with stage 2 normal wastegate map, that one seemed fine to me.
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Old 01-23-2013, 09:40 AM   #32
Cobb Tuning
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Did you take a look at my stock intake log with stage 2 normal wastegate map, that one seemed fine to me.
Wasn't too bad, but what were the outside temps? As is typical with boost creep, outside temp plays a huge role. Car could be fine at one temp but completely overboosting at colder temps. The only way you can verify anything for sure is to test at the coldest temp that you are going to see with the car.

Bill
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