importance of dwell correction vs rpm ? if any ..

[Welshman]

ive been having spark blowout trouble on my gen4 3sgte , while scanning the map i noticed the dwell correction on on a ramp down to 80% by 8k from 500 ( 500 = only point at 100% )

i changed this to 100% all through and now with 2.7ms dwell in logs im running fine up to 8k @ 1.8 bar ( hopefully a good 550+hp at this )

i just wondered is there any reason this setting should be there or am i fine as i am ?

[ATS_Scott]

ive been having spark blowout trouble on my gen4 3sgte , while scanning the map i noticed the dwell correction on on a ramp down to 80% by 8k from 500 ( 500 = only point at 100% )

i changed this to 100% all through and now with 2.7ms dwell in logs im running fine up to 8k @ 1.8 bar ( hopefully a good 550+hp at this )

i just wondered is there any reason this setting should be there or am i fine as i am ?

I'm running the same dwell with no RPM correction on my GEN4's, but only running 400HP at wheels with billet compressor on otherwise stock CT15.

[Welshman]

that will do for me , i dont remember setting it , maybe the wizard did it if i clicked on a coil set sometime .

[Jadzwin]

We commonly use the following correction. It could improve idle speed (less misfires due to higher spark energy) and due to low effective DC it doesn't influence the coild temperature / life.

[flubyux2]

im also having spark blow out over 18psi with my 1jzgte but before switching to EMU, I was able to run 21psi smoothly. also using a conservative 0.025" plug gap.

the coil dwell corr table is untouched from the original 2jzgte base map I began with.
I did try to increase the coil dwell time table under the normal operating voltage regions but afraid to make large changes because I don't want to overheat the coils.

[Welshman]

mine improved once i put the dwell correction to 100 .

if you look a your logs it will tell you the actual dwell when its running .

[flubyux2]

today, i finally went into my emu and changed my dwell correction to 100% on the last cells. so far, so good. no spark blowout yet at low boost. i have to take the car out under high boost in cooler weather and see if my issue is solved.

if a little dwell correction fixed my low boost problem, i wonder how much the % can be safely increased to combat the spark blowout under much higher boost conditions without damaging the coil packs. i would hate to melt them down or overdrive them.