help with setting up megasquirt

Post Sat Jun 28, 2014 12:05 am

One for the tuning guru's.
I need to set up my spark tables on megasquirt as my mpg is really crap. Afr's are fine but timing is off I guess. If anyone can help that would be great

Post Sat Jun 28, 2014 12:21 am

you could lean out your aft targets a bit and re tune the bottom part of your ve table so cruise is a bit leaner save some fuel there

Post Sat Jun 28, 2014 12:37 am

guessing your block is a m20b25?

Post Sat Jun 28, 2014 12:52 am

i think its a 1.6l 4pot engine

Post Sat Jun 28, 2014 1:02 am

total waste of time then

Post Sat Jun 28, 2014 1:04 am

but its got boost.

Post Sat Jun 28, 2014 6:52 pm

i think a target cruise aft 0f 13.5-13.9 afr is way richer than you need and will cost a fair bit of fuel 15-16 afr would be better, using orfc will help a little and you warm up enrichment looks fat, my m20 does not need any extra fuel after the coolant reaches 27c so if you tune your warm up may help. and i think you ego switch point voltage should be closer to 2.5 volts as well

Post Sat Jun 28, 2014 9:07 pm

gromgsxr wrote:i think a target cruise aft 0f 13.5-13.9 afr is way richer than you need and will cost a fair bit of fuel 15-16 afr would be better, using orfc will help a little and you warm up enrichment looks fat, my m20 does not need any extra fuel after the coolant reaches 27c so if you tune your warm up may help. and i think you ego switch point voltage should be closer to 2.5 volts as well

ORFC?
My fuel table is set up great. Idle at 14-15 afr and under full boost 12.3 -13.2 afr off the top of my head.

My spark table may be the issue after speaking to a few people on megasquirt forum.

rich318i wrote:total waste of time then

Hmm you would know I take it

Post Sat Jun 28, 2014 9:08 pm

Yes M40 lump

Post Sat Jun 28, 2014 10:09 pm

yeah i saw the post on msextra and iv seen you msq. Over Run Fuel Cut, and like i said ur afr target table is rich from your data log at say 2800-3000 rpm cruising at 4% throttle the afr is 13.5-13.9 you could be 15-16 in that area.

Post Sat Jun 28, 2014 11:06 pm

Did you see the latest data log? Whats your username on there? When ive finished putting it all back together I will get a new log and go from there

Post Sat Jun 28, 2014 11:42 pm

yeah i saw the latest one, may wanna look at your ae setting it goes pretty lean on tip in, i'm grom_e30 on there. il keep an eye out for the log and current msq.

Post Sun Jun 29, 2014 5:37 pm

gromgsxr wrote:yeah i saw the latest one, may wanna look at your ae setting it goes pretty lean on tip in, i'm grom_e30 on there. il keep an eye out for the log and current msq.

Thanks for your help, I'll be in contact when things are up and running again