Build Thread - MegaShark
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marc79euro645
- Posts: 513
- Joined: Dec 08, 2008 11:33 PM
I am keeping away from Priming Pulse as I am often turning on the ignition to change a setting. I just know I'll inadvertently flood it and/or get fuel in my oil!
So, my REQ_FUEL is at 7.2 where it should be and fuel pressure is no longer an issue. Rescaled my VE table but I am pretty sure it needs some more live tuning. I haven't played with AE tuning yet. I've gotten as far as turning it on but that's it. Any tips on how to tune it? Should I do AE or EAE? EAE looks scarily complicated! Any suggested settings I should try to get started? Do I finish the VE table first and then turn on AE and tune it or can I do both at the same time?
As for IAT heat soak, how do I know if my sensor is heat soaked and reading too hot? It's a steel bung on a steel pipe. We're going to wrap the entire charge pipe in ceramic heat insulation wrap tomorrow to see if that lowers our IAT a little. Should I move the IAT sensor to just after the intercooler or leave it where it is (6" from TB).
Megasquirt is a handful. The build and install wasn't that hard but the tune is another animal. Racing in 5 days! Hoping to get this thing fully dialed in by then!
So, my REQ_FUEL is at 7.2 where it should be and fuel pressure is no longer an issue. Rescaled my VE table but I am pretty sure it needs some more live tuning. I haven't played with AE tuning yet. I've gotten as far as turning it on but that's it. Any tips on how to tune it? Should I do AE or EAE? EAE looks scarily complicated! Any suggested settings I should try to get started? Do I finish the VE table first and then turn on AE and tune it or can I do both at the same time?
As for IAT heat soak, how do I know if my sensor is heat soaked and reading too hot? It's a steel bung on a steel pipe. We're going to wrap the entire charge pipe in ceramic heat insulation wrap tomorrow to see if that lowers our IAT a little. Should I move the IAT sensor to just after the intercooler or leave it where it is (6" from TB).
Megasquirt is a handful. The build and install wasn't that hard but the tune is another animal. Racing in 5 days! Hoping to get this thing fully dialed in by then!
I have had good luck tuning standard AE. I know Dan has a lot of time playing with EAE. Peter may be able to help there as well.
I'm with Dan on keeping priming pulse low and you give an excellent reason as to why keeping it low can prevent flooding during certain circumstances.
I would probably just leave you IAT sensor where it is. Insulating the piping will help reduce radiant heating of the CAC piping.
I would also second that the a well tuned VE table should be extremely smooth. Engines are very linear devices and their fueling (and timing) requirements express that. I have tons of OE level calibration under my belt and smooth is good.
I'm with Dan on keeping priming pulse low and you give an excellent reason as to why keeping it low can prevent flooding during certain circumstances.
I would probably just leave you IAT sensor where it is. Insulating the piping will help reduce radiant heating of the CAC piping.
I would also second that the a well tuned VE table should be extremely smooth. Engines are very linear devices and their fueling (and timing) requirements express that. I have tons of OE level calibration under my belt and smooth is good.
Thanks for the feedback! EAE may be a bit too much for me given the race is this weekend so might stick with AE for now. Any recommend settings to start with or are they very particular to each set up?Brad D. wrote:I have had good luck tuning standard AE. I know Dan has a lot of time playing with EAE. Peter may be able to help there as well.
I'm with Dan on keeping priming pulse low and you give an excellent reason as to why keeping it low can prevent flooding during certain circumstances.
I would probably just leave you IAT sensor where it is. Insulating the piping will help reduce radiant heating of the CAC piping.
I would also second that the a well tuned VE table should be extremely smooth. Engines are very linear devices and their fueling (and timing) requirements express that. I have tons of OE level calibration under my belt and smooth is good.