Megasquirt Megasquirt map, tips
09-13-05, 05:28 AM
#52
Rotary Enthusiast
t-von,
One of the beauties of the MS system is that you choose the rpm and map 'bins' to suit your install. If you have a high-revving bike engine, change the top rpm bin to 14,000, and adjust the others as needed. If a boosted engine, bump the top map bin up to just above your maximum map value, and adjust the others.
I have a friend who runs this system in his GMC motorhome. He has his 12 rpm bins spaced from 500 to 3500 rpm!
Roger.
One of the beauties of the MS system is that you choose the rpm and map 'bins' to suit your install. If you have a high-revving bike engine, change the top rpm bin to 14,000, and adjust the others as needed. If a boosted engine, bump the top map bin up to just above your maximum map value, and adjust the others.
I have a friend who runs this system in his GMC motorhome. He has his 12 rpm bins spaced from 500 to 3500 rpm!
Roger.
09-13-05, 07:20 AM
#53
MegaSquirt Mod
yeah, another thing about the map above in addition to what roger said. If your map goes to 7000 but you go over that, the megasquirt will keep providing fuel based on the last specified value.
You probably don't want to do this in your VE table, but in the spark advance table, it doesn't matter that much because above a certain rpm, you're not going to be changing your advance anyway. You can take advantage of this feature and make your rpm bins really close together for really fine control of the advance when it's increasing, and then when it levels off, have like 2 rpm bins at the right of the table at the same advance, and let the MS interpolate past the end.
Ken
You probably don't want to do this in your VE table, but in the spark advance table, it doesn't matter that much because above a certain rpm, you're not going to be changing your advance anyway. You can take advantage of this feature and make your rpm bins really close together for really fine control of the advance when it's increasing, and then when it levels off, have like 2 rpm bins at the right of the table at the same advance, and let the MS interpolate past the end.
Ken
09-15-05, 02:50 AM
#54
Originally Posted by muythaibxr
yeah, another thing about the map above in addition to what roger said. If your map goes to 7000 but you go over that, the megasquirt will keep providing fuel based on the last specified value.
Just to let you guys know, I'm tuning illiterate and trying to understand this stuff.
Last edited by t-von; 09-15-05 at 03:05 AM.
09-15-05, 07:21 AM
#55
MegaSquirt Mod
the 12x12 tables are fully sufficient. All values between bins are interpolated (the spaces as you call them).
to set them up, you can generate a table using the megatune software, and it'll evenly spread the rpm and MAP bins for you. Then all you have to do is start tuning. If you find a peaky spot between bins that needs a lot more fuel than the bins around it, and the interpolation isn't able to handle it, you just move one of the rpms on either side of that rpm to that rpm, and then keep tuning.
12x12 is more than enough with movable MAP and rpm bins and interpolation.
to set them up, you can generate a table using the megatune software, and it'll evenly spread the rpm and MAP bins for you. Then all you have to do is start tuning. If you find a peaky spot between bins that needs a lot more fuel than the bins around it, and the interpolation isn't able to handle it, you just move one of the rpms on either side of that rpm to that rpm, and then keep tuning.
12x12 is more than enough with movable MAP and rpm bins and interpolation.
09-15-05, 07:20 PM
#56
Originally Posted by muythaibxr
the 12x12 tables are fully sufficient. All values between bins are interpolated (the spaces as you call them).
to set them up, you can generate a table using the megatune software, and it'll evenly spread the rpm and MAP bins for you. Then all you have to do is start tuning. If you find a peaky spot between bins that needs a lot more fuel than the bins around it, and the interpolation isn't able to handle it, you just move one of the rpms on either side of that rpm to that rpm, and then keep tuning.
12x12 is more than enough with movable MAP and rpm bins and interpolation.
to set them up, you can generate a table using the megatune software, and it'll evenly spread the rpm and MAP bins for you. Then all you have to do is start tuning. If you find a peaky spot between bins that needs a lot more fuel than the bins around it, and the interpolation isn't able to handle it, you just move one of the rpms on either side of that rpm to that rpm, and then keep tuning.
12x12 is more than enough with movable MAP and rpm bins and interpolation.
Ok that makes since. Thx!
Thread
Thread Starter
Forum
Replies
Last Post
killerrx710
2nd Generation Specific (1986-1992)
1
09-24-15 10:57 PM
