Car jerking coz of rich afrs?
#1
Evolving Member
Thread Starter
Car jerking coz of rich afrs?
What afrs would u recommend at wide open throttle for 89octane on a stock evo with just an exhaust?
I have a sputtering issue at third gear and fourth.. changed coils, plugs, tested leaks, fuel pump, everything related to what can cause a sputter.
then i checked my map and saw its going upto 9.5 afr at about 6k rpm.
I have a sputtering issue at third gear and fourth.. changed coils, plugs, tested leaks, fuel pump, everything related to what can cause a sputter.
then i checked my map and saw its going upto 9.5 afr at about 6k rpm.
#4
Evolving Member
Thread Starter
#5
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#8
EvoM Guru
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What afrs would u recommend at wide open throttle for 89octane on a stock evo with just an exhaust?
I have a sputtering issue at third gear and fourth.. changed coils, plugs, tested leaks, fuel pump, everything related to what can cause a sputter.
then i checked my map and saw its going upto 9.5 afr at about 6k rpm.
I have a sputtering issue at third gear and fourth.. changed coils, plugs, tested leaks, fuel pump, everything related to what can cause a sputter.
then i checked my map and saw its going upto 9.5 afr at about 6k rpm.
Two totally different things.
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KentStateTsi (Nov 12, 2017)
#11
Evolving Member
Thread Starter
now my map is reaching around 10.5 by redline but the gauge would still read upto 10.0, reducing the afrs fixed the hesitation.
#12
Evolving Member
Thread Starter
UPDATE:
I sorted this issue by adjust the fuel map, however, my wideband AFRS are way off with the fuel maps. Fuel maps are at 10.6 by redline, but wideband maxes out at 10.0.
is there a way i can get those two to match up, or atleast get them a bit closer?
I sorted this issue by adjust the fuel map, however, my wideband AFRS are way off with the fuel maps. Fuel maps are at 10.6 by redline, but wideband maxes out at 10.0.
is there a way i can get those two to match up, or atleast get them a bit closer?
#13
Evolved Member
#14
Evolved Member
you can spend some time adjusting maf compensation table but you will struggle to get it to match..
#15
Evolved Member
The numbers in the fuel map dont really correlate.
You can by fine tuning injectors and maf.
But you can have a 10.0 afr in high octane map and have a actual afr of 12.0 on the wideband.
If you have aftermarket injectors you can richen or lean globally so your map and wideband are almost the same.
You can by fine tuning injectors and maf.
But you can have a 10.0 afr in high octane map and have a actual afr of 12.0 on the wideband.
If you have aftermarket injectors you can richen or lean globally so your map and wideband are almost the same.