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Hesitation and high KR Cold weather issues?
- Thread starter ShoBoat
- Start date
ajpturbo said:If they did an update your car wouldn't run unless u swapped the 3 bar.....and when u did ur reflash u over write the dealer flash...khdl4tv does have an update...I'll have to look when I get home what it changed to...its useless tho....literally 1 change in the entire tune and has to do with communications
Thanks Much appreciated! Actually mine is KHDK4KA
Actually it will run... I flashed mine back to stock and like an idiot didn't change the MAP back to 2BAR one time... runs like a dog when you put it in gear, but started right up and I drove it about 30 miles before it dawned on me what I had done... acts like it's in third gear all the time on surface streets, but runs fine on the freeway.ShoBoat said:ajpturbo said:If they did an update your car wouldn't run unless u swapped the 3 bar.....and when u did ur reflash u over write the dealer flash...khdl4tv does have an update...I'll have to look when I get home what it changed to...its useless tho....literally 1 change in the entire tune and has to do with communications
Thanks Much appreciated!
If you discover a new update on your ECM, check your service invoice to see if they registered an error and changed the MAP as if it were faulty.
I suppose it could run.Mine idled really bad and I wouldn't even have thought to try and drive it....I guess I call that not running....ur O2 sensors were driving ur car at that point lol...fuel trims would've been maxed out because the fuel table and speed density values would be all wrong with the slopes and intercepts....
Definitely explains the behavior, LOLajpturbo said:I suppose it could run.Mine idled really bad and I wouldn't even have thought to try and drive it....I guess I call that not running....ur O2 sensors were driving ur car at that point lol...fuel trims would've been maxed out because the fuel table and speed density values would be all wrong with the slopes and intercepts....
Another update, I decided to move down to the 2 bar tune. And no difference, I then swapped out the 3 bar sensor for my newer one (from the 3 bar tune) reset the adaptations and it appeared to be gone. I picked up another 3 bar sensor and loaded the 3 bar tune again last night. Unfortunately it's been raining for the last 2 days so I haven't been able to really test it out. Although, I did notice that Torque was reporting 16lbs of max boost before the swap. I don't recall ever reaching that much boost in the past. Once the roads clear up (hopefully tomorrow) I will know better.
The KR has not been effected at all by anything I have done.
The KR has not been effected at all by anything I have done.
That seems to be a common experience, KR when part throttle or lugging the engine only. Seems a little more oxygen in the fuel may do the trick, as the issue is not really controllable (thus far, to my knowledge) via a tune. Can you correlate the KR events to trans shift points? That's where it's pointing to on my Edge, and surprisingly, only once the trans temps rise above 100F. Of course, could just be a worn transmission, but doesn't feel like it at all.ShoBoat said:Misfire is gone! However KR still remains unaffected. 0 RK at WOT though.
ecoboostsho
New member
This may be related to this issue? http://en.wikipedia.org/wiki/Low-speed_pre-ignition
I see this in my car occasionally.
I see this in my car occasionally.
So I decided to try a different station for my fill up. Big mistake. LOR went to 83% on Forscan and KR was really bad. Started getting 3 at wot and 5 on mid throttle. 91 tune was only slightly better. So back in goes the stock tune for now. After doing some looking around the net. It looks to be common with 10% blends. Shelf life is max 90 days. And much less in winter months with condensation issues with water contamination. Looks like I will be going to 91 Shell that has no Ethanol.
http://m.click2houston.com/news/gas-station-octane-test-and-investigation/24654338
Interesting vid.
Sent from my iPhone using Tapatalk
http://m.click2houston.com/news/gas-station-octane-test-and-investigation/24654338
Interesting vid.
Sent from my iPhone using Tapatalk
ajpturbo said:But doesn't the ethanol help raise effective octane?..so u want E0 when most pumps are E10-E15....I thought that's what's so good about E85 is the ocean rating...so with e10 he octane rating will be slightly higher than pure gas at e0
If it's not fresh than no, the issue that I have read is that once the Ethanol absorbs any water it falls to the bottom of the tank at the station. Dropping the rating of the fuel up to 6 points. So basically I paid extra for 88 octane fuel. I am guessing that the last station does not sell a lot of 94. Hence the "bad" gas I got. 94 is a 10% blend up here. There is no where to get anything above 91 that contains 0 Ethanol around here. With the exception of "race gas". Shell 91 here has 0 Ethanol, which supposedly holds its Octane rating longer than an Ethanol blend. So back to the only conclusion that I can draw is that the pumps around here have some old 94 in them. The last in particular was really bad.
glock-coma
New member
SHOdded said:That seems to be a common experience, KR when part throttle or lugging the engine only. Seems a little more oxygen in the fuel may do the trick, as the issue is not really controllable (thus far, to my knowledge) via a tune. Can you correlate the KR events to trans shift points? That's where it's pointing to on my Edge, and surprisingly, only once the trans temps rise above 100F. Of course, could just be a worn transmission, but doesn't feel like it at all.ShoBoat said:Misfire is gone! However KR still remains unaffected. 0 RK at WOT though.
Torrie cured my lugging high kr issue with a tune adjustment. I will post the data log from torque later.
SHOdded said:So you have HEET type products available, ShoBoat? Methanol + water dispersant. I am testing it now based on Z's reco, Add a bottle and see what happens.
I have tossed in a bottle of Heet. I will report back.
Sent from my iPhone using Tapatalk
Awesome! Good luck!ShoBoat said:I have tossed in a bottle of Heet. I will report back.
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