Looking at the tables below, can the MS be tuned past 7,000 rpm's?

 

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.

 

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

 

See thats what I was wondering. So how would you spread the tables from a 800 rpm idle up to 9k (like for a Renesis engine)? If you spread the tables from idle up to 9k, you would have a huge gap in the map right? With the Renesis the hp doesn't level off. It keeps getting higher with rpm. Are these 12x12 tables limited my the processor? If so when will a more powerfull processor be available with more tables to tune with?

Just to let you guys know, I'm tuning illiterate and trying to understand this stuff.

 

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.

 

Ok that makes since. Thx!