Post a log of the issue coming up on map0 and map1 for comparison to these map3 logs.
Burger Tuning JB4 for Kia Stinger!
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Post a log of the issue coming up on map0 and map1 for comparison to these map3 logs.
mitchyboy
Active Member
So just went for a quick drive (only got short small roads around my work so couldn't get up to high speed) - managed to get a log in each of map 0, 1, 2 & 3. Strangely the car felt fine this time, so I don't understand because absolutely nothing has changed since the last couple of times I drove it and I was getting the problem time and time again. Confused.
I think maybe the problem is more prevalent when accelerating hard from a cruising speed - ie. pulling out to overtake or accelerating out of a slight bend. And it's not just me noticing it, because my wife in the passenger seat asked why the car was surging/stuttering...
Here are the new logs in any case.
Is it just boost oscillation at partial throttle? If so the new FUD.7 linear pedal mapping may help.
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mitchyboy
Active Member
I'll go out later after work and find a nice, long, quiet bit of road and get some decent logs for analysis. I don't think what I've currently provided is much use to you!
mitchyboy
Active Member
Happens under full throttle, so not sure. When it happens, the car also feels sluggish and doesn't accelerate how you expect.
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TwinSnails
Stinger Enthusiast
Is there any tire spin? Could be the nannies coming in.
washguy
Stinger Enthusiast
If it were me I would add 4 gals of e85 then fill it up ......or if ya got half tank put 2 gals in....that 98 may not be all that... but geez you shouldn't have problems on map 0 cause that's stock...so it isn't the fuel then nor the JB4
map 1 should be fine if it were fuel related too....im thinking one of your mods the bov maybe?
did you do all the mods at one time or add them...think back at what point did it start to do this if you added mods...and then you said it stutters and at the same time the bovs are unloading ...could be your problem right there...who did all the installs? if it was a shop take it back to them.....if its sluggish at hiway cruise while inputting lots of pedal that's a high load situation....these latest hexes are super smooth....at what point did this start is the question of the day....if you had the
jb4 installed and she ran fine...you can eliminate that prolly.and also it does this on map0 that's stock.so the JB4 doesn't come into play.... Wash
map 1 should be fine if it were fuel related too....im thinking one of your mods the bov maybe?
did you do all the mods at one time or add them...think back at what point did it start to do this if you added mods...and then you said it stutters and at the same time the bovs are unloading ...could be your problem right there...who did all the installs? if it was a shop take it back to them.....if its sluggish at hiway cruise while inputting lots of pedal that's a high load situation....these latest hexes are super smooth....at what point did this start is the question of the day....if you had the
jb4 installed and she ran fine...you can eliminate that prolly.and also it does this on map0 that's stock.so the JB4 doesn't come into play.... Wash
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So I had questions about the log I shared on the 1/4 mile thread. I'm not attacking anyone. I am just curious. Seems like everytime someone has a question it gets turned into a shitshow argument....
Red - Why the heck aren't all of my cylinders acting the same? Timing is dropping out completely on different cylinders at different times?
Green - Wtf is this guy doing.
Black - That is a ridiculously long throttle cut and really deep right? What is causing this. I know on the faster JB4 logs, this doesn't cut as deep as it does on mine. This seems like it certainly is wrecking my 0-60 because when this happens, you can clearly tell in my log my speed stops increasing. Also, is this shift long as hell or is it just me?
Purple - Isn't launch control 2500? Why am I chillin at 1500 to start?
Red - Why the heck aren't all of my cylinders acting the same? Timing is dropping out completely on different cylinders at different times?
Green - Wtf is this guy doing.
Black - That is a ridiculously long throttle cut and really deep right? What is causing this. I know on the faster JB4 logs, this doesn't cut as deep as it does on mine. This seems like it certainly is wrecking my 0-60 because when this happens, you can clearly tell in my log my speed stops increasing. Also, is this shift long as hell or is it just me?
Purple - Isn't launch control 2500? Why am I chillin at 1500 to start?
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I zoomed in to your run to see what is going on at the launch which is why the X axis is stretched out.
Red - They are. The sampling rate of cyl1 via OBDII and cyl2-6 via a special ECU RAM read are at different refresh rates.
Green - RPM? Looks normal. Zoomed in you can see some of the sample points. With 5 samples in one second you'll see the transitions between the points.
Black - There is no black line here? Throttle looks more or less as it should. You dropped around 2psi at the 1-2 gear shift. Worth fixing but not unexpected given the exhaust mods, map, and intake temperature. Quick fix: Higher JB4 map or IAT wire to get factory target up during cold weather and lower JB4 targets.
Purple - Not sure what you're referring too. Green, engine speed, is sitting at 2200rpm on the launch.
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Tonkabob
2500 Posts Club!
All that timing pull in the middle of fist gear is impacting 60 foot time - correct?
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Sigh. I circled with colors the noted areas and then linked the pre circled log... so that post probably makes no sense. In the gym but when I get home I’ll include the correct image.
No ~10 degrees @ ~4000rpm @ 15psi is normal timing mapping.
Tonkabob
2500 Posts Club!
Ok, i see that now. The timing is dropping as the throttle opens and he doesn't get 99 throttle until 22 MPH and that's is 10 degree starting point at WOT.
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DaBears4Lyfe
1000 Posts Club!
@Terry@BMS can you tell if this has the fuel cables? I see the bluetooth on the right but cant tell if the fuel cables are there.
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TwinSnails
Stinger Enthusiast
Once I get wheel spin my throttle will slam closed and look similar to log. 0-60 at over 5.1 seconds(bottom) vs reduced boost by gear and very little if any wheelspin (top).
Looks like an older V1 harness. Can't see fuel wires.
DaBears4Lyfe
1000 Posts Club!
DaBears4Lyfe
1000 Posts Club!
Is there any issues with using this older harness? Could I buy a newer harness if it matters? What were the changes? Fuel wires would work the same and install the same?
From interior to exterior to high performance - everything you need for your Stinger awaits you...
