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

could it also just be a side effect of my big behind cam (236/248 duration) 113lsa 600+lift?

the higher my control authority gets the worse my engine rpm chases back and forth a few hundred rpm under cruise or any load. even idle. why is this? i moved it down to 3% so it wouldnt do it anymore.

my cylinders are about 3/4 a liter but I tell ya with even a .2ms pw under 160+ temp, and .1prime, it will flood unless i crack the throttle.

ya im actually gonna give that a shot after some research I did last night here on the forums, my prime was 2. at 25F and at 160F it was .1, so I made it 2. across the board, i will give it a shot tonight see what happens.

any suggestion for a starting prime point? is 2ms enough or should I do much ...

50#'ers - 8 of them.

not the answer I wanted but thanks, so if cranking pw is every ignition cycle that means for my v8, it squirts 8 times per revolution?

that makes sense why .1ms cranking is not enough but .2 which is double the fuel is too much and I have to crack the throttle quite a bit to let it fire.

any tips ...

i changed my injections per cycle from 2 to 4, do I need to worry about any of my other settings such as cranking pulsewidth? I have had a problem with warm starting, .1ms of cranking is not enough and .2ms of fueling is too much. I was curious if changing the injections per cycle would effect the ...

thank you matt, I did a test last night in which in my alpha-n table, i set my the cell my engine idles in to 20kpa, and on my vetable, at 20kpa, and the correct rpm, i set it around 47ve which my engine idles at with the map just fine, but with alpha-n enabled, it does not idle at all unless i ...

specifically how do the rpm points work from blend to full map? is it scalar as well? is there a bad or good range of rpm from blend to pure map?
is it a bad idea to use my bottom 6x6 grid of my ve table specifically for my alpha-n conversion table so i can tune my alpha n specifically?

cool! if my alpha-n rpm column points (800-1200-1600etc) dont match my ve table rpm points (600-900-1200-1500)
does it interpolate a ve number between the two closest rpm cells?

alpha-n qestion, when using alpha-n, you have your tps x rpm table, and fill in fake kPa values, when megasquirt looks at what kPa to reference in the VE table, what rpm column does it also go to? does it follow the same rpm as made in alpha-n table?

example:

tps 50%.................50kpa
rpm ...

just wnted to confirm, when wiring up my lc-1 wideband cable, i want to run the brown wire to the single wire lead in megasquirt? not the yellow, 'simulated narrowband' wire do i?

no smoke whatsoever while cranking or startup, should i richen up the prime pulse under hot? I am going to give it a try. ill let you know tomorrow.

anyone?

Im using the two point table and my -40 degree and my 160 degree cranking pw is both only 2ms, but in my cool california night weather around 50-60 degrees, it fires up fine but once the engine is warmed up (160) it cranks for about 3-4 seconds before it fires. what Can I do?

yes thank you I went out and did as outlined above, worked well! my prime at 60degrees is only 1ms, and cranking pw is also only 1ms, and my req_fuel bumped up to 30 before it stayed running.

now I need to fudge with the VE tables to get cruising good.

(i need a wideband)

once the car was warmed ...

yes i have spark and I just changed my spark plugs, they were really fouled. I just changed them out with some fresh ac delcos, and I am going to follow this new method for getting my car running from very little fuel to running. wish me luck now I am calmed down.

I've described this before.. maybe ...

WHY???
out of the blue it wont start i tried all new msq files and that didnt work so when I reverted back to my original, it wont start anymore! I have killed my battery many times now trying to start it I am just LOST. And quite frustrated right now.

Anyone in folsom, ca wanna come take a look at ...

is there a way i can see without the engine running, which way its moving if i look into my throttle body? alo is there a better tuning method? I was gonna leave it wide open until normal operating temperature, then close it, and adjust my throttle body manually to achieve perfect idle. then work my ...

please help?