Possible spark blowout?

EcoBrick Bob said:
Wheel hop always scares me.  Hard on axles, u-joints and differentials...  Only wheel hop I have had with my Flex was recently at the line in first, with Michelin Pilot SS.  Wheel hop is always in the front, as rear only handles a max of 150 hp/torque.  If you have someone watch your launches, they will see that fronts spin and rears do not.  Flex comes with 255-45-20's Goodyear RS-A's for comparison. Never tried them at the strip.

As for wheel hop issues.  The cure in Pontiac G8's is to use axles that are different diameters. Expensive but worth it. ($1,000.-$1,700) rear only obviously. Not aware of any axle options for EB drive train.
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Mine doesn't hop at launch, it destroys the tires though. They simply can not hang on at full stall launch. If i just stab it and let it flash they hold on tight but that of course would net slower times assuming i can get it to hook up.
The stock tires that came on the Sport are not very good tires.
Hankook Optimo H426 Grand Touring All-Season 255/50/20 reviews only give them a 2.5 out of 5 stars. 440 tread wear A/A but looking at specs and reviews they just don't hook up. Jack of all trades master of none.
I want to put some sticker tires on it but i'm torn between sizes....do i stay in the 255-265 range or go for the gusto and put 275/45/20 on it. Decisions, decisions.

I thought about running the hankooks 4drhrd is running but they are an inch shorter then stock height.
Not sure if i want to drop an inch in tire height ><
 
The OBD2 plug in came in today. I won't be able to log until Friday but hopefully i can see whats going on. I also picked up some 104 octane that i can throw in the mix and see if it's a potential bad gas issue.
 
Definitely log between the two tunes and see what's happening. I doubt it's spark blowout but you'll know soon enough with a couple of logs.
 
I've been using Torque for gauges on a Nexus 7, but haven't gotten into logging yet. How many parameters can/should I log at once and will it slow down my gauge display?  How do you get the log info off of Torque after a run?
 
4DRHTRD said:
Definitely log between the two tunes and see what's happening. I doubt it's spark blowout but you'll know soon enough with a couple of logs.
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Livernois suggested bad gas but i was mid tank when the issue started up. Also bad gas seems like it would get detonation if anything. I know the tune is super rich, cleaned the Sport the other day and both tailpipes were coated in black soot.
I also checked my plugs and they were a whitish to gray color which tells me the plugs are too hot for the tune. Guess i'll see whats up soon enough though.
 
I was running Murphy 93 this AM and had an engine light come on.  Was accelerating but not WOT by any means.  Turned out to be #6 plug misfire.  Never felt it and light flashed about 20 sec and then quit.  While continuing to drive I checked my DashHawk and found it in the history... but not current.  Have new plugs and will replace when I get to FL.  Have had misfires before and you could noticeably feel them.  Weird.....
 
EcoBrick Bob said:
I was running Murphy 93 this AM and had an engine light come on.  Was accelerating but not WOT by any means.  Turned out to be #6 plug misfire.  Never felt it and light flashed about 20 sec and then quit.  While continuing to drive I checked my DashHawk and found it in the history... but not current.  Have new plugs and will replace when I get to FL.  Have had misfires before and you could noticeably feel them.  Weird.....
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Could be a misfire, if the new plugs they put in the 14's are too hot once tuned with the 93 hi boost it is very possible. Hopefully once i get some logging time i'll get it pinned down.
 
TouchOfEvil said:
EcoBrick Bob said:
I was running Murphy 93 this AM and had an engine light come on.  Was accelerating but not WOT by any means.  Turned out to be #6 plug misfire.  Never felt it and light flashed about 20 sec and then quit.  While continuing to drive I checked my DashHawk and found it in the history... but not current.  Have new plugs and will replace when I get to FL.  Have had misfires before and you could noticeably feel them.  Weird.....
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Could be a misfire, if the new plugs they put in the 14's are too hot once tuned with the 93 hi boost it is very possible. Hopefully once i get some logging time i'll get it pinned down.
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Are the plugs that LMS sells a range colder?  I'm having similar issues with the Lund tune and may try these as a possible fix if they could help.

http://www.livernoismotorsports.com/products/Motorcraft-2010%252b-V6-EcoBoost-Spark-Plugs-%28Pre%252dGapped-Available%29.html
 
They are a range colder, I love them in az :) they may out may not be a great plug in a cold climate

Sent from my SCH-I545 using Tapatalk

 
I got stuck with a tank of 89 today (it was raining and I didn't want to hunt for better gas) and no more mis-fire.  I think my issue might be due to the stock (revised#) Autolite plugs Ford recommends which are factory gapped.  I didn't reduce the gap.  Will lower gap to .30 or less with my new cooler range plugs like BPD's.
 
4DRHTRD said:
You can pick up a set of autolites much cheaper locally:
Autolite XP-5364
Just gap them yourself to .025 to .030 (I'm on .025), .030 for stock apps.

http://www.autozone.com/autozone/parts/_/N-5yc1s?itemIdentifier=896895
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Autozone site is mad and tells me they don't fit...is that just because of the colder range that the site doesn't want me to have them?

Have not done any logs yet just did a little gauge reading for a few mins tonight.
AFR is hitting about 10.7 at WOT. Seems kinda rich, i always thought 11.2 was a good base then work it to 11.8ish so long as no knock?
I'm new to FI though so maybe i'm wrong?
 
Also on the log section for torque it only seems to log one thing at a time? Is there a way to log 3 or 4 items at once or do just need to do multiple pulls for each aspect that needs to be logged?
 
Made some pulls tonight, allot of 40-70 pulls and two 0-100ish pulls.
With the 93 perf tune it's kinda random at times on the timing itself. One pull it hits 19degrees others its maxxed out about 14-15 degrees. It reached 19.5 on one of the 100mph pulls then when it shifted to third or fourth it dropped as low as 9 degrees and built back up to 14 at the high end of that gear.
A/F seems to be as rich as 10.6 and leans out to 11.2 at the highest.
Boost itself never gets over 14lbs at anytime WOT, and it certainly tappers off from about the last 1000 rpms for each gear. It dropped off as much as down to 7.5lbs sometimes.

One thing is clear, nothing is set in stone, each pull yields different boost numbers and ignition numbers while A/F is always rich.

I didn't realize i could add the knock app til after i was home and looking through the settings so i'll try and see about the potential for any knock tomorrow.
Then i'll install the 93 hi boost and see what happens.
I picked up a set of the colder plugs that i will put in after doing some pulls on the 93 hi boost.
I also have 104 octane i can mix in to possibly rule out fuel as an issue.

Any advice at this point from anyone?
 
I got a couple A/F readings in mid to upper 10's on the stock tune.  10.56 the lowest.  Mostly mid 11's and it would lean out in mid 12's.  This was several WOT runs from different speeds.  I'm not sure I'm logging timing right as it jumps all over so I won't report that.  Knock sensor retard KS only kicks in every once in a while, very little though, on stock.  It's usually when A/F is in 14's at WOT and building boost.  I'm not expert.  Just reporting what I saw on stock.

I'll try the tune later this week once the car gets serviced at Ford for another issue.
 
JMR76 said:
I got a couple A/F readings in mid to upper 10's on the stock tune.  10.56 the lowest.  Mostly mid 11's and it would lean out in mid 12's.  This was several WOT runs from different speeds.  I'm not sure I'm logging timing right as it jumps all over so I won't report that.  Knock sensor retard KS only kicks in every once in a while, very little though, on stock.  It's usually when A/F is in 14's at WOT and building boost.  I'm not expert.  Just reporting what I saw on stock.

I'll try the tune later this week once the car gets serviced at Ford for another issue.
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Mid 12's is a bit lean for FI imo, but mid 10's is super rich. So long as there is no knock present a 11.6-11.9 would be great for making power and staying safe.
 
JMR76 said:
I just started having some shuddering or slight hesitating running 93 tune.  It occurs about 70% of the time on full throttle above 5K RPM.  The weather here is colder 30s to 40s lately when I noticed.  It only happens at WOT above 5k.  I ran stock tune and 91 tune with no hesitation at all.

I didn't have this problem with the old 93 version, but this one is more aggressive.

I'm no way as knowledgable as others here, but I'm starting to think the tune is running lean on some bad gas or winter mix. 

I guess I'm going to have to invest in a program to start logging to see what's going on.
Click to expand...

Hello, was reading your post on your problem with the LMS 93 tune, I'm having the Same exact problem, could you please let me know if you found a solution to it. I have a 2013 SHO with the LMS 93 tune      Thank you very much, Rich
 
I starting logging.  It seems if I'm already moving 30 mph or more and get on WOT, it hesitated above 4500 RPM,  my logging show the timing spark retard is is kicking in.  The fuel actual drops offs then it continues to accelerate then shift. 

I've gone to 140mph at 3/4 throttle without any hesitation, but if I floor it, it shudders above 4500 rpm like like it's losing power.

The strange thing is that if I do stop and do 0-80 mph it seems OK with no retard. 
 
I changed spark plugs to the ones recommended here and gapped them to .25
Doing that the stutter went away except at a 60 punch. It will stutter from 60-65 then it's gone.
But it does not stutter anywhere else.
According to torque and the app for knock detection i do get some from time to time. Mostly at the 4500rpm area but it's usually .5 degrees.
I did get one run it hit twice, once at 4500 and got 2.5 degrees and again at 4800 and got .5
That was the worse i have seen.
However, watching real time data it seems it might just be pulling timing as needed here and there.

I'd also like to note i only get the stutter from a punch. If i hammer it from any other area say 40mph second gear and it shifts into third i do not get the stutter.
I thought about a/f ratio being lean but it's not. Even at a punch it's almost instantly at a 11.3/1 and gets as rich as 10.2/1
Last when looking at my absolute tps it seems i am showing 87.xx tps instead of 100% Is that normal or is something amiss there?
 
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