Megasquirt s4 tii base map
My map is for a stock S4 turbo, but FMIC and much more open exhaust. Once you get into boost above about 4 psi, its very rich since i havent made it to a dyno yet (and have 1000cc secondaries in there). The cold-start stuff isn't quite correct either, but its not bad.
It should be ok to get you started for the NA region, and maybe a bit of the boosted region too after you change around the staging parameters.
It should be ok to get you started for the NA region, and maybe a bit of the boosted region too after you change around the staging parameters.
so i loaded it and it didnt start my car at all, so i was looking and mine has missing teeth so i changed that and some of the cranking setting to the way mine was so hopefully i can get it going!!!!
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the 2nd lm circuit is a circuit you can build in the proto area using an LM1815N chip to interpret a 2nd VR sensor. You would use this to read the stock sensor as is, with the LM circuit reading the 2-toothed wheel and the 24 toothed wheel hooked up to the regular timing input on the MS. The settings for missing tooth should be 12-1 toothed wheel (missing tooth, 24 tooth - 1), and the actual trigger numbers will depend on how you have the CAS aligned.
Joined: Aug 2005
Posts: 795
Likes: 0
From: Va Beach or IN, indianapolis
xshawn801x
shawn i had the same problem.
today i coped toplesses file and all i did was reuse most of the settings BUT rewrote the VEtable of fuel to his and in my case i had to lean it out a tad for my setup but it fired the car right up! thanks topless. i would still need to tweak the spark table and other little things but the map does work.
my setup
86 rx7 shell roller
88 jdm T2 motor
2core FMIC
stock turbo
550 primaries and 550 secondaries
shawn i had the same problem.
today i coped toplesses file and all i did was reuse most of the settings BUT rewrote the VEtable of fuel to his and in my case i had to lean it out a tad for my setup but it fired the car right up! thanks topless. i would still need to tweak the spark table and other little things but the map does work.
my setup
86 rx7 shell roller
88 jdm T2 motor
2core FMIC
stock turbo
550 primaries and 550 secondaries
Joined: Aug 2005
Posts: 795
Likes: 0
From: Va Beach or IN, indianapolis
hey topless
could i get your spark table map also please. mine isnt doing very well cause i cant get the car to idle any lower then 1500 i had it doing a great idle before not i cant get it to go lower without dying. any help here man thanks.
could i get your spark table map also please. mine isnt doing very well cause i cant get the car to idle any lower then 1500 i had it doing a great idle before not i cant get it to go lower without dying. any help here man thanks.
I found out recently that my FPR hasnt been doing anything, and the rail pressure has been an almost constant 58 psi instead of proportional to intake pressure like it should be, so my fuel map may be a bit off. The spark map I'm currently running should be pretty close to the one in the MSQ i posted above, but I'll try to throw up my most recent tonight.
I've been using the idle advance settings to regulate my idle and it seems very happy at 15* BTDC when fully warmed up and 6-8* BTDC on the spark map for when its not warmed up, even though most of the recommendations I've gotten were anywhere from 5* BTDC to 5* ATDC. However, I cant maintain a steady idle at AFR's much above 13-13.5, so I try to stick it at 12.5-13 and it works well enough. She currently idles pretty steadily at 800 rpm, I can turn it down but I want to keep the trailing coils on with a little bit of a buffer)
I've been using the idle advance settings to regulate my idle and it seems very happy at 15* BTDC when fully warmed up and 6-8* BTDC on the spark map for when its not warmed up, even though most of the recommendations I've gotten were anywhere from 5* BTDC to 5* ATDC. However, I cant maintain a steady idle at AFR's much above 13-13.5, so I try to stick it at 12.5-13 and it works well enough. She currently idles pretty steadily at 800 rpm, I can turn it down but I want to keep the trailing coils on with a little bit of a buffer)
Joined: Aug 2005
Posts: 795
Likes: 0
From: Va Beach or IN, indianapolis
so far i have a AEM spark table from a 3rd gen that i converted it so that the megasquirt can unstand it. and the fuel map is yours . i honestly think my main issue is that the spark table is a little off, like i would get 5 psi @ 4000rpm i want to tune for 10 psi . so yeah idle and going into boost are the main problems i have at the moment . thanks in advanced.
I've only run about 6 psi of boost on this setup, but it seems to run pretty well there. I've never driven a stock T2 so I dont know how it compares, but it seems pretty quick to me. Once again, the fuel may be a bit off for a setup with a working FPR (too rich everywhere, but especially at low loads), but that shouldn't affect spark.
Joined: Aug 2005
Posts: 795
Likes: 0
From: Va Beach or IN, indianapolis
topless
im having trouble loading your recent file there and was wondering if you just post the spark table in a picture . cant seem to get my labtop to unzip the file and now it doesnt even want to get on the net anymore which is even more odd......
thanks in advanced
im having trouble loading your recent file there and was wondering if you just post the spark table in a picture . cant seem to get my labtop to unzip the file and now it doesnt even want to get on the net anymore which is even more odd......
thanks in advanced
By request, here is the screen-shot of my spark map. I also have my idle advance set to 20* BTDC, active below 900 RPM and 2 points or so above minimum TPS ADC.
This map has been working well for me for the past month or so, and I recently got the best fuel economy (by at least 20%) i've seen over a given route (basically just 600 miles at 75 mph or so) since doing the turbo swap and megasquirt.
This map has been working well for me for the past month or so, and I recently got the best fuel economy (by at least 20%) i've seen over a given route (basically just 600 miles at 75 mph or so) since doing the turbo swap and megasquirt.
Joined: Aug 2005
Posts: 795
Likes: 0
From: Va Beach or IN, indianapolis
topless
was your VE fuel table changed as well ??? i do remember you running a 230 kpa ve table did you not? or did you change that table also to 210 kpa as well . if so can you post your ve table of the new changes please!
thanks man =)
was your VE fuel table changed as well ??? i do remember you running a 230 kpa ve table did you not? or did you change that table also to 210 kpa as well . if so can you post your ve table of the new changes please!
thanks man =)
My VE table goes to 230 kPa... i dont really have a reason for one being higher than the other since the most I see is about 140-145 kPa right now (6ish psi). Also, my fuel pressure regulator has likely not been working since i've started tuning it (i only recently got a fuel pressure gauge), and has been at a constant 60 psi, so correcting for a working FPR at stock pressure, the whole fuel map will become flatter and higher. However, I did just manage 26.7 mpg over the last tank of gas (all highway), so something must be dialed in correctly.
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