2tgeu with megasquirt ecu. Need help with tuning like VE table ect

[BEV051]

Hi iv recently fitted a Megasquirt ecu to my 2tgeu and got it running (kinda its not idling well ect.) but im having trouble tuning it if any one has some info that could help like a VE table ect. that i could use as a base to work from that would be great, thank. Any help would be greatly appreciated.

thanks
Bevo

[oldcorollas]

can you host or email your setup currently?

what mods has the engine got, what size injecotrs, high/low Z, etc...

i have a map for my 4K, but it is not exactly a normal one.. but it shouldn't be too hard to get things worked out.

do you have a heated O2 sensor?

[BEV051]

Its pretty stock it has a slightly lumpy cam, extractors, 2 1/4 exhaust. Iv got low z injectors. I dont no the size of the injector though may be able to find out. and my O2 sensor isnt heated. and at the moment im using a very dodgy lap top because my good one dosnt have a db9 plug that i need and in trying to got a usb to db9 so I can use my good lap top that might help to.

[BEV051]

here is what iv got it runing on the best so far

<?xml version="1.0" encoding="ISO-8859-1"?>
<msq xmlns="http://www.msefi.com/:msq">
<bibliography author="MegaTune 2.25 beta" writeDate="1990-01-04T06:49:24-14:00" />
<versionInfo fileFormat="4.0" nPages="1" signature="" />
<page number="0" size="125">
<constant name="algorithm">&quot;Speed Density&quot;</constant>
<constant name="alternate">&quot;Alternating&quot;</constant>
<constant name="aseCount">200</constant>
<constant name="asePct" units="%">20</constant>
<constant name="baroCorr">&quot;Off&quot;</constant>
<constant name="battFac" units="ms/v">0.10</constant>
<constant name="cltType">&quot;GM&quot;</constant>
<constant name="crankCold" units="ms">12.0</constant>
<constant name="crankHot" units="ms">4.0</constant>
<constant name="divider">1</constant>
<constant name="egoCount">32</constant>
<constant name="egoDelta" units="%">1</constant>
<constant name="egoLimit" units="%">30</constant>
<constant name="egoRPM" units="RPM">1200</constant>
<constant name="egoSwitch" units="v">0.392</constant>
<constant name="egoTemp" units="°F">-40</constant>
<constant name="egoType">&quot;Narrow band&quot;</constant>
<constant name="engineType">&quot;Even fire&quot;</constant>
<constant name="fastIdleT" units="°F">40</constant>
<constant name="injOCfuel" units="ms">0</constant>
<constant name="injOpen" units="ms">1.0</constant>
<constant name="injPwmP" units="%">50</constant>
<constant name="injPwmT" units="ms">1.0</constant>
<constant name="injType">&quot;Port&quot;</constant>
<constant name="mapBins" rows="8" units="kPa">
20
35
45
55
65
80
90
100
</constant>
<constant name="mapType">&quot;250 kPa&quot;</constant>
<constant name="matType">&quot;GM&quot;</constant>
<constant name="nCylinders">&quot;4&quot;</constant>
<constant name="nInjectors">&quot;4&quot;</constant>
<constant name="primePulse" units="ms">2.0</constant>
<constant name="reqFuel" units="ms">5.5</constant>
<constant name="rpmBins" rows="8" units="RPM">
600
1100
2000
3000
4000
5000
6000
7000
</constant>
<constant name="rpmk">3000</constant>
<constant name="taeBins" rows="4" units="ms">
1.0
1.0
1.0
2.0
</constant>
<constant name="taeColdA" units="ms">2.0</constant>
<constant name="taeColdM" units="%">30</constant>
<constant name="taeTime" units="ms">0.5</constant>
<constant name="tdePct" units="%">2</constant>
<constant name="tpsThresh" units="v/s">0.586</constant>
<constant name="twoStroke">&quot;Four-stroke&quot;</constant>
<constant cols="8" name="veTable" rows="8" units="%">
53 76 103 113 108 102 97 92
59 84 114 125 119 113 107 102
63 89 121 133 127 120 114 109
66 94 128 141 134 127 121 115
70 100 135 149 142 135 128 122
76 107 146 161 153 145 138 131
79 113 153 169 161 153 145 138
83 118 161 177 168 160 152 144
</constant>
<constant name="wueBins" rows="10" units="%">
100
100
100
100
140
120
100
100
100
100
</constant>
</page>
</msq>

[thechuckster]

oh.. i thought you were doing fuel & spark.. oh well.

fwiw, timing map from a 3tgte - is not from megasquirt but gives you data to work with :


btw - good luck with the MS !

[oldcorollas]

i'd be starting with your REQ fuel (for which you should know what your injector size is)

you could also try going from alternating to simultaneous... or to alternating 2 squirts.. or 4 squirts... see which stabilises your idle better.

for NA, the VE bins should max out at under 100, unless you have underestimated your REQ fuel...