LMS 3 bar V11 93 bounces off rev limiter
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MHW100
SHO Member
Gosh. I hammered it right out of the gate. I waited about 1 mi after letting the engine warm up
StealBlueSho
SHO Member
That would be me...
I have a 2016 SHO PP that I purchased with 7K on the odometer and currently has 16K on the odometer.
It’s been tuned pretty much since I got it. The LMS v11 did have hesitation before the pump but I had no shifting issues. After the pump I have had no hesitation issues at all.
I do run both GH and LMS tunes and have not had any issues with either one since the HPFP install.
Both are very solid tunes for me.
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Okay. So getting closer. I did the pint overfill trick first and drove the car for an extended time for the trans to relearn before any aggressive driving each time I tried a new tune. I tried 2 different new tune revisions, a softer shifting v15 and a performance v15. The softer one didn’t do anything strange, but it sucks. It doesn’t feel any quicker than stock and the car has no punch. The performance v15 tune is strong and shifts fine with no missed gears or fueling issues except on 2-3 WOT shifts at 65-70. You notice it most when you floor it from 40 or so and get a kick down to 2 on an on ramp and you keep it floored until the 2-3 shift is commanded at 65-70 or so. It still shudders a little and you get some tach flutter, but it does eventually shift on its own without hitting the paddle. Behavior is exactly the same with traction control on or off. I emailed Anthony and asked for them to back the 2-3 shift point down a little. I only got to try 3-4 once, and forget any higher than that. I don’t want to spend the next few months in jail. Lol
When they get the revisions done, I’ll run the new one for at least a while and report back. It seems like these issues might actually be fixable now, though. I was running low on hope before. Would really like that high pressure pump since my main issues seem to be fueling related but don’t want to mod the car that extensively now.
When they get the revisions done, I’ll run the new one for at least a while and report back. It seems like these issues might actually be fixable now, though. I was running low on hope before. Would really like that high pressure pump since my main issues seem to be fueling related but don’t want to mod the car that extensively now.
MHW100
SHO Member
I certainly have to hand it to LMS and Anthony for the outstanding customer support . Very accessible and sincere in wanting to resolve this issue . Email and telephone call today from him along with a V14 which my understanding may be the successor to V11 .
I'm going to try the V11 for a few more days to see if the missed shift somehow is abated by the learning process .
At least they are giving it the old college try .
I'm going to try the V11 for a few more days to see if the missed shift somehow is abated by the learning process .
At least they are giving it the old college try .
Raging Bull
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Is the v14 cutting back on the power a lil bit ? Or is it just shift points that are revised ?
MHW100
SHO Member
I think it's adjusting the fuel pressure to account for colder temps as well as full throttle shifting.
Raging Bull
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Gotcha !
I have V15 tunes and I can’t tell any power difference over the V11 on the performance 3 bar. That’s just butt dyno, though. I didn’t run before/after numbers or anything.
ridered74
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This thread has inspired me to try the v11 93 octane tune again. During my exchanges with LMS back in march/april, disabling traction control was never brought up by them. I ran an AJP 93 octane tune all summer with no issues, then switched to my LMS 91 octane tune when the weather dropped below 50 and just haven't driven it aggressively at all.
I loaded the LMS V11 93 hard shift tune the other day, and today I gave it a few WOT runs with traction control turned off from a dead stop and a few from a roll. It did not have any issues, and it was around 40 degrees today. To me, that is a band aid not an actual fix. I don't want to have to turn traction control off every single time I start my car. I don't have to do that with either of my other two tunes from other places,. It would be very easy to forget to do that, and next thing you know the car just falls on its face rather than accelerating as you would expect, and that could put a person in a dangerous position on the road.
For troubleshooting purposes, the first V11 93 worked flawlessly on my car for about two weeks. It was not until I finally got my downpipes moved over from my old car to this one, and then loaded the V11 downpipes tune that I started having issues.
I loaded the LMS V11 93 hard shift tune the other day, and today I gave it a few WOT runs with traction control turned off from a dead stop and a few from a roll. It did not have any issues, and it was around 40 degrees today. To me, that is a band aid not an actual fix. I don't want to have to turn traction control off every single time I start my car. I don't have to do that with either of my other two tunes from other places,. It would be very easy to forget to do that, and next thing you know the car just falls on its face rather than accelerating as you would expect, and that could put a person in a dangerous position on the road.
For troubleshooting purposes, the first V11 93 worked flawlessly on my car for about two weeks. It was not until I finally got my downpipes moved over from my old car to this one, and then loaded the V11 downpipes tune that I started having issues.
shoblock
SHO Member
I loaded my first v11 in October. I'm in Northern Ohio, so it's cold, and there is no question the symptoms are worse as the temperature drops. I just ordered a Gearhead auto octane adjust tune with an sct tuner. I may try one more program from recommendations here, and will run the winter with the best of those tunes. In the spring, I will go to the track on a day when ambient temp is at least 60 degrees. If LMS is correct about the variable of temperature, I will likely have no issues with the v11, and if so, will run their tune all summer. Then, go to GH or possibly AJPT, for winter. ET's will decide. I really want to replace my fuel pump with a firestorm, but they are over $1500. Pretty sure the pump is the silver bullet. I'll post when all is recorded.
In the meantime, could everyone with v11 issues reply with the temperatures they are driving in?
Thanks
Shoblock
I think you’re correct. I first got the v11 around thanksgiving. It was unseasonably warm here around 60. I didn’t notice any issues at first. I first noticed the high RPM shuddering on a trip a week or so later when it was in the low 30s. It’s been mid 40s or lower ever since.
I didn’t notice any missed shifts where it dropped into neutral until they started messing with the tunes, and it has not done that again on v15, so that just seems to be an aberration.
I really need to get some gauges so I can monitor fuel pressure. I bet it’s dropping pretty low when it shudders above 6000 RPM.
StealBlueSho
SHO Member
It starts shuttering around 1000psi... should be at 2000+.
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StealBlueSho
SHO Member
You can pickup a used SCtX4 for around $250... you can monitor just about everything with one of those in real time, datalog, etc... resolution is really good.
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Raging Bull
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I went with LMS for my tune because I believed they were the pioneers in this ecoboost game. I still believe they are the best. I always go with my gut instincts. Can’t they just make a powerful tune that can be equal in hot and cold weather without any issues. I don’t have any issues with my 93 v11 tune , the soft shift one does take long to shift into 4th in sport mode only but it does shift. I can’t afford that high pressure fuel pump to make everything better if needed. Don’t want to keep adding mods to make ones that I have continue to work. Seems like the old rope a dope. I live in New York and fortunatly I can garage mine for the winter so I don’t know if I would have any of these issuses when the temps drop. Ran super during the summer though WHOA !! I’m keeping the faith !
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2015_SHO_PP
Member
Loaded the V14 93 this morning and only noticed a very slight hesitation above 5500 when punching it. It was 26 degrees outside. Coming home temps were about 46 and there were no problems at all. The car threw me back in the seat and shifted fine up to ~90mph. Not trying to get a reckless driving ticket on an on-ramp.
Good to know. Been thinking about getting a tuner for the Mustang, so maybe I’ll get an X4 for it and use it for logging on the SHO. I assume it will log anything you plug it into and it doesn’t have to be married to the car.
I bought a cheap Chinese WiFi ELM for my iPhone a few weeks ago. Been meaning to try Forscan lite, Torque, etc to see what PIDs they can monitor.
So got a chance to run the latest v15 tune updated with the slightly lower shift point, and it doesn’t shudder anymore on 2-3. With it floorboarded at the 2-3 shift at 70 or so you get the slightest hesitation and almost imperceptible hiccup when it shifts, but I’m gonna drive it for a while before I request the shift point be lowered anymore. Definitely get the feeling I’m right on the edge of the fueling capability of the stock high pressure pump at that point, though. Would really like to log it and see what the pressure actually is. Wonder what the air fuel and knock retard is doing at that point though. With low fuel pressure, you’d think it would be lean.
I know you’re supposed to turn traction control off when you flog it, but just for an experiment, I drove the **** out of on the way home and did 20 plus full throttle pulls from 40-70 with the traction control on and a couple 0-70+ runs, and it never did miss a shift again. Don’t know what caused it before, but it seems okay now. Hope it doesn’t do it again. Don’t think my heart could take it. Lol
I know you’re supposed to turn traction control off when you flog it, but just for an experiment, I drove the **** out of on the way home and did 20 plus full throttle pulls from 40-70 with the traction control on and a couple 0-70+ runs, and it never did miss a shift again. Don’t know what caused it before, but it seems okay now. Hope it doesn’t do it again. Don’t think my heart could take it. Lol
shoblock
SHO Member
I ordered an SCT tuner Monday, and will get the GH tune for auto octane just to get started. It will be my go-to tune when traveling and octane is questionable.
Next, I would like to order the catch can and tune(s) from Brad for 93 octane. I have new plugs and the K&N drop-in as well as the three bar.
Questions:
Where is the best place to buy the catch can?
When data-logging for Brad, did you ever experience any of the disconcerting issues spelled out on this thread for the v11?
I'm thinking I would get my best data log climbing a ramp to a freeway where the speed limit is 70mph. Does that sound do-able?
Do you have a factory fuel pump?
Since we are in very different climates, I'm aware that the cold in Northern Ohio may add a variable that I will have to deal with.
Thanks for your help.
Shoblock
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