Timing gets pulled as soon as I build boost?
Thread Starter
Staging Lane
Joined: Aug 2016
Posts: 92
Likes: 1
From: Florida
As you can tell I'm not an expert in this tuning stuff yet. But it is my understanding that the cylinder air mass can also be calculated by IAT and MAP, which is what the sped density tune uses. The timing chart is in RPM vs Cylinder Air Mass so it is important to monitor when tuning the car.
ok thank you, I have been saving bits and pieces of info from the posts I come across when people have different issues in HPT. ON your wideband did you put it through the EGR input to reference it?
Good news!
I believe Cyl Air is calculated from MAP, RPM, TPS and IAT.
You will note the timing table uses it.......
I would go ahead and set the table you made all nines to 0. It's your safety net if it sees KR.
Have fun!
Ron
I believe Cyl Air is calculated from MAP, RPM, TPS and IAT.
You will note the timing table uses it.......
I would go ahead and set the table you made all nines to 0. It's your safety net if it sees KR.
Have fun!
Ron
Thread Starter
Staging Lane
Joined: Aug 2016
Posts: 92
Likes: 1
From: Florida
I have the MPVI Pro unit which gives you 4 inputs to data log whatever you'd like. I wired the widerband into one of those and then used the math parameters to convert the voltage to an AFR in VCM Scanner. My wideband needed a formula of [input voltage]/0.5+9.8.
I did set the min timing table back to 5 degrees. Heading to the track tomorrow to see what she'll do now. It definitely feels a lot faster.
I did set the min timing table back to 5 degrees. Heading to the track tomorrow to see what she'll do now. It definitely feels a lot faster.
so weird, I was having the same problems. same fixes.
no idea why it didnt do this with the previous motor/turbo combo
which table is this?
I have so many questions about your tune. I though you were running 80lb injectors boost ref'd base pressure at 4 bar, but you have the lb/hr scaling set to 116 across the board?
now I have the truck all put back together maybe we can get together on your dyno
no idea why it didnt do this with the previous motor/turbo combo
which table is this?
I have so many questions about your tune. I though you were running 80lb injectors boost ref'd base pressure at 4 bar, but you have the lb/hr scaling set to 116 across the board?
now I have the truck all put back together maybe we can get together on your dyno
Thread Starter
Staging Lane
Joined: Aug 2016
Posts: 92
Likes: 1
From: Florida
Good news - At the track this weekend the timing worked as expected. 13 degrees down the track, until IATs got a little too high (150 F) so it pulled 3 degrees out. It was a warm day with IATs starting at 105, so we will address that problem later.
I did find out that I'm running out of fuel pump. Current setup is a Walbro 255LPH and Boost a Pump drawing out of the top of the stock carb'ed tank. Looking to sell the Boost a pump/255 combo and buy one in line fuel pump. Would the Bosch 044 or Walbro 450 pump be enough to handle ~700 tire? Trying to keep fuel system as simple as possible so not looking to go dual pump, and trying to avoid buying a sump tank.
I did find out that I'm running out of fuel pump. Current setup is a Walbro 255LPH and Boost a Pump drawing out of the top of the stock carb'ed tank. Looking to sell the Boost a pump/255 combo and buy one in line fuel pump. Would the Bosch 044 or Walbro 450 pump be enough to handle ~700 tire? Trying to keep fuel system as simple as possible so not looking to go dual pump, and trying to avoid buying a sump tank.
Last edited by rworcester; Feb 21, 2017 at 11:37 AM.
Good news - At the track this weekend the timing worked as expected. 13 degrees down the track, until IATs got a little too high (150 F) so it pulled 3 degrees out. It was a warm day with IATs starting at 105, so we will address that problem later.
I did find out that I'm running out of fuel pump. Current setup is a Walbro 255LPH and Boost a Pump drawing out of the top of the stock carb'ed tank. Looking to sell the Boost a pump/255 combo and buy one in line fuel pump. Would the Bosch 044 or Walbro 450 pump be enough to handle ~700 tire? Trying to keep fuel system as simple *** possible so not looking to go dual pump, and trying to avoid buying a sump tank.
I did find out that I'm running out of fuel pump. Current setup is a Walbro 255LPH and Boost a Pump drawing out of the top of the stock carb'ed tank. Looking to sell the Boost a pump/255 combo and buy one in line fuel pump. Would the Bosch 044 or Walbro 450 pump be enough to handle ~700 tire? Trying to keep fuel system as simple *** possible so not looking to go dual pump, and trying to avoid buying a sump tank.
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Thread Starter
Staging Lane
Joined: Aug 2016
Posts: 92
Likes: 1
From: Florida
I am looking at the AE380. I have the stock tank, so would the "right way" to do this be welding a sump on the tank, and in line AEM380, and a boost reference FPR? I think if I can sell the 255/Boost a Pump, I won't paying out of pocket be too much
so weird, I was having the same problems. same fixes.
no idea why it didnt do this with the previous motor/turbo combo
which table is this?
I have so many questions about your tune. I though you were running 80lb injectors boost ref'd base pressure at 4 bar, but you have the lb/hr scaling set to 116 across the board?
now I have the truck all put back together maybe we can get together on your dyno
no idea why it didnt do this with the previous motor/turbo combo
which table is this?
I have so many questions about your tune. I though you were running 80lb injectors boost ref'd base pressure at 4 bar, but you have the lb/hr scaling set to 116 across the board?
now I have the truck all put back together maybe we can get together on your dyno
that flow rate comes from ID's data.
That table is called Knock Retard Min Timing
so that's the lowest the timing will go when retarding.
aparrently it's in effect for torque management as well.
Let me know when you are ready!
