Skipping at high rpm

[SHOdded]

As long as you are using a good provider for your fuel, and you are using an appropriate tune (20% E85/80% E10? might be pushing it in the mix), the LOR (or OAR) should be just fine (-1). If the LOR starts increasing, you leave room for knock to happen. LOR range is -1 to +1.

Torque Pro is just $5, so the only other investment if you have an Android device, is a Bluetooth (or Wifi) ELM.327 adapter for the OBD port. Since you are mixing E85, I'd highly recommend running this setup even if you are monitoring just a few parameters.

 

[Big Mike 74]

As long as you are using a good provider for your fuel, and you are using an appropriate tune (20% E85/80% E10? might be pushing it in the mix), the LOR (or OAR) should be just fine (-1). If the LOR starts increasing, you leave room for knock to happen. LOR range is -1 to +1.

Torque Pro is just $5, so the only other investment if you have an Android device, is a Bluetooth (or Wifi) ELM.327 adapter for the OBD port. Since you are mixing E85, I'd highly recommend running this setup even if you are monitoring just a few parameters.

Updated to the version 9 91 octane 3 bar, car shifts better but my little problem is worse which LMS said may happen, I think I'm just going to change all of the plugs for good measure maybe fuel filter? Went wide open with it on the freeway about 10 mins ago and she just started losing power and cutting out at now 5,000 rpm even lower than before.....maybe the gaps in one of the plugs is off idk.....this carnis f****** killing me right now

 

[13blacksho]

As long as you are using a good provider for your fuel, and you are using an appropriate tune (20% E85/80% E10? might be pushing it in the mix), the LOR (or OAR) should be just fine (-1). If the LOR starts increasing, you leave room for knock to happen. LOR range is -1 to +1.

Torque Pro is just $5, so the only other investment if you have an Android device, is a Bluetooth (or Wifi) ELM.327 adapter for the OBD port. Since you are mixing E85, I'd highly recommend running this setup even if you are monitoring just a few parameters.

My mistake... I meant to say a 10% blend. I do two gallons to a full tank.

 

[EcoBoostSHO]

Are you using an E85 calculator of any kind? If you are using two gallons of E 85 how empty are you when that happens? There are a couple of gallons left in there even towards empty. Over time your blend could be creeping up over 20% since regular gas already has 10% built in to it....maybe just try a regular tank of 93 and see if it gets better?

Sent from my XT1096 using Tapatalk

 

[Big Mike 74]

No codes set in PCM (don't go by CEL)? Which additive did you put in? That must have been what 6-7 tanks ago? If the plugs look clean (dry, no fuel smell, good color, no oil in plug well) and properly gapped (0.030), then the problem is not in that part of the system. Usually the 2013+ have a problem in:
A) Valve cover oil leak in plug well #3 (driver side, firewall side of engine)
B) Fuel injector Leak
C) Fuel pump (Low Pressure) or Fuel control module problems (HPFP issues are rare, but possible if symptoms present at a particular rpm)

Knock sensor wiring issues were fairly common in the 2010-12 SHOs, worth a check (though unlikely) for your SHO.

 

[Big Mike 74]

Same behavior when returned to stock? Colder weather, longer idling time would lead to more soot at the tailpipe.

You can see and hear if you look close the needle jumping the whole time up and down and how long it takes to get through this gear....this car used to rip through this gear

 

[SHOdded]

This is the V8 or the V9 tune, Mike? Definitely do not run the V9 tune at this time, it still requires some tweaking. Definitely struggling to pick up rpm & speed, like an exhaust restriction (likely clogged catalyst) or not enough fuel maybe. It is entirely possible the turbos are affected. This is where datalogging comes in handy when trying to self-diagnose. Maybe someone will make a guess that turns out to be THE answer, but having data on hand helps improve the probabilities.

http://www.underhoodservice.com/tech-feature-lack-of-power-leads-to-exhaust-restriction-analysis/

The fuel filter is integrated with the fuel pump, IIRC, so to change it, you will need to replace the fuel pump. I don't know if there is an access door under the backseat or trunk floor to make it an easy swap (there's one on the Edge) tho.

 

[Big Mike 74]

This is the V8 or the V9 tune, Mike? Definitely do not run the V9 tune at this time, it still requires some tweaking. Definitely struggling to pick up rpm & speed, like an exhaust restriction (likely clogged catalyst) or not enough fuel maybe. It is entirely possible the turbos are affected. This is where datalogging comes in handy when trying to self-diagnose. Maybe someone will make a guess that turns out to be THE answer, but having data on hand helps improve the probabilities.

http://www.underhoodservice.com/tech-feature-lack-of-power-leads-to-exhaust-restriction-analysis/

The fuel filter is integrated with the fuel pump, IIRC, so to change it, you will need to replace the fuel pump. I don't know if there is an access door under the backseat or trunk floor to make it an easy swap (there's one on the Edge) tho.

Yea I'm going to put it back to my version 8 93 3 bar tune tonight after I get out , that's the version 9 91 octane....all it did was amplify the problem, so maybe I shouldn't change all the plugs at this time? And what could I possible do for a clogged cat, I've seen that stuff called "cataclean" that runs through the gas I've heard that works well, I don't know my 2011 never had any of these issues and I got rid of that with 80,000 on it this car is becoming really frustrating

 

[SHOdded]

Even if the CataClean product works, the problem is likely to come back because the CAUSE is not resolved. The cats are covered by federal warranty, 7/70 or 8/80, so it might be best to take the car to a dealership (stock tune of course) and let them deal with it. Exhaust restrictions can destroy turbos, so it is important to pay attention to it ASAP. Turbo integrity should be verified along with the exhaust/cats.

http://www.underhoodservice.com/tech-tip-exhaust-restriction-leads-to-turbo-destruction/

Another possible problem could be timing issues, since we have variable timing on the SHO. That means timing chain, sprocket, or cam phaser involvement. Though usually you will hear a prolonged rattle, or have issues throughout the rev range if the cause is timing.

 

[Big Mike 74]

Even if the CataClean product works, the problem is likely to come back because the CAUSE is not resolved. The cats are covered by federal warranty, 7/70 or 8/80, so it might be best to take the car to a dealership (stock tune of course) and let them deal with it. Exhaust restrictions can destroy turbos, so it is important to pay attention to it ASAP. Turbo integrity should be verified along with the exhaust/cats.

http://www.underhoodservice.com/tech-tip-exhaust-restriction-leads-to-turbo-destruction/

Another possible problem could be timing issues, since we have variable timing on the SHO. That means timing chain, sprocket, or cam phaser involvement. Though usually you will hear a prolonged rattle, or have issues throughout the rev range if the cause is timing.

They are the catted downpipes from LMS currently on the car, I can't believe no codes are in the computer or anything

 

[SHOdded]

Well, IDK what else to say. If you are ok with pulling the plugs (I thought they only have 2k or so on them?), maybe they'll provide a clue. Verify the gaps with a feeler gauge and post some pics. COP wiring issues are a little harder to verify DIY, you need the proper equipment for that.
http://www.underhoodservice.com/cop-connection-investigating-common-coil-on-plug-misfires/

 

[Big Mike 74]

Well, IDK what else to say. If you are ok with pulling the plugs (I thought they only have 2k or so on them?), maybe they'll provide a clue. Verify the gaps with a feeler gauge and post some pics. COP wiring issues are a little harder to verify DIY, you need the proper equipment for that.
http://www.underhoodservice.com/cop-connection-investigating-common-coil-on-plug-misfires/

Yes I am off all weekend I pulled the plugs they seemed fine no odor not burnt up, but I didn't re check the gaps like an idiot so this weekend I'll pull them again and verify gaps re install and see what we have, I really appreciate your help man thank you, its frustrating that I had a 2011 with no issues at all with the same mods and almost tripple the mileage, and this car is giving me grief daily lol

 

[Big Mike 74]

This is the V8 or the V9 tune, Mike? Definitely do not run the V9 tune at this time, it still requires some tweaking. Definitely struggling to pick up rpm & speed, like an exhaust restriction (likely clogged catalyst) or not enough fuel maybe. It is entirely possible the turbos are affected. This is where datalogging comes in handy when trying to self-diagnose. Maybe someone will make a guess that turns out to be THE answer, but having data on hand helps improve the probabilities.

http://www.underhoodservice.com/tech-feature-lack-of-power-leads-to-exhaust-restriction-analysis/

The fuel filter is integrated with the fuel pump, IIRC, so to change it, you will need to replace the fuel pump. I don't know if there is an access door under the backseat or trunk floor to make it an easy swap (there's one on the Edge) tho.

E mailed Livernois the same videos, they got back to me and seem to think it's definitely a fuel issue, and said its due to the cold weather and winter blend fuel which is possible because it started happening a couple months ago, recommended I continue to run 93 octand fuel but bump the tune down to a 91 octand 3 bar v8 until winter is over....I'm going to do this when I get home tonight and see how it is

 

[BamSHO]

Yeah warmer weather and winter blend is having an bad effect on our cars. I started going to back to brand name gas too, like Sunoco, Exxon, Shell. V8 93 3 bar tunes runs better.

 

[Big Mike 74]

Yeah warmer weather and winter blend is having an bad effect on our cars. I started going to back to brand name gas too, like Sunoco, Exxon, Shell. V8 93 3 bar tunes runs better.

Yea the videos I posted were with the version 9 tune they sent me, I was getting it with the 93 v8 3 bar tune too just no where near as bad, I'll try the 91 3 bar later and see if it eliminates the problem then when spring comes I'll go more aggressive with the tunes

 

[Big Mike 74]

No codes set in PCM (don't go by CEL)? Which additive did you put in? That must have been what 6-7 tanks ago? If the plugs look clean (dry, no fuel smell, good color, no oil in plug well) and properly gapped (0.030), then the problem is not in that part of the system. Usually the 2013+ have a problem in:
A) Valve cover oil leak in plug well #3 (driver side, firewall side of engine)
B) Fuel injector Leak
C) Fuel pump (Low Pressure) or Fuel control module problems (HPFP issues are rare, but possible if symptoms present at a particular rpm)

Knock sensor wiring issues were fairly common in the 2010-12 SHOs, worth a check (though unlikely) for your SHO.

http://s1073.photobucket.com/user/Bigmike7475/library/Mobile Uploads?sort=3&page=1

 

[Big Mike 74]

Well, IDK what else to say. If you are ok with pulling the plugs (I thought they only have 2k or so on them?), maybe they'll provide a clue. Verify the gaps with a feeler gauge and post some pics. COP wiring issues are a little harder to verify DIY, you need the proper equipment for that.
http://www.underhoodservice.com/cop-connection-investigating-common-coil-on-plug-misfires/

http://s1073.photobucket.com/user/Bigmike7475/library/Mobile Uploads?sort=3&page=1

 

[Big Mike 74]

Well, IDK what else to say. If you are ok with pulling the plugs (I thought they only have 2k or so on them?), maybe they'll provide a clue. Verify the gaps with a feeler gauge and post some pics. COP wiring issues are a little harder to verify DIY, you need the proper equipment for that.
http://www.underhoodservice.com/cop-connection-investigating-common-coil-on-plug-misfires/

Hey I put the 2 bar sensor back in the car and the stock tune back on it....it no longer skips at high rpm but the check engine light is on because the car does have down pipes however when I pulled the 3 bar sensor it was dirty I noticed I'm going to screw around with the car more today re tune it and see what happens.

 

[SHOdded]

That's good to hear that there IS a difference stock to tuned. Clean both MAP sensors while you are at it

 

[Big Mike 74]

That's good to hear that there IS a difference stock to tuned. Clean both MAP sensors while you are at it

I put the 3 bar back in it and the 93 tune back on it and noticed it started skipping again at higher rpm and downshifting funny, now I researched a little bit in faulty or bad map sensors and those seem to be some symptoms, I'll order another 3 bar to see if it clears up....but with the stock tune and the 2 bar the car runs a **** of a lot better I'm just getting o2 sensor codes probably due to the downpipes