MicroSquirt.com read only forum (Jan.15,2018)

Well so far my jounry through useing megasquirt for fuel and spark has been a bouncy one heh, the point im at now its probley as close as im going get to something that is reiable and yet has perfourmence...

so far it seems when im pushing around 16~18 psi of boost my car will make some wierd hesitation and hissing noise... at first i thought it was my blow off valve being opened from the boost, but i added washers that came with it to give it more spring tensition and that seemed not make a noticeable difference....

when checking my logs i notice the map single is real spikey.... im running the anti lag filter at 60% to help smooth it out but it is still very spikey, and when looking at it u can see the pulsewidth fallow the map makeing my AFR little bit jumpy..... what can i do to smooth this out? im afread to add to much lag filter % and make it harder for MS to see the real mao varations..... i dont know why id be seeing this kind problem

anyone got any thoughts? im runnig MS2.53 V3 board EDIS4

Sean..

Sean,

The default lag on MAP is 50%, this is more smoothing than you currently have at 60% (higher numbers mean less filtering, up to 100%=no filtering).

I would think you should try values around 30% to 40%, that should smooth out the MAP signal without affecting the response terribly. You can go even lower, depending on how it affects your particular engine.

There's more on this here: http://www.megasquirt.info/ms2/configure.htm#lag

Lance.