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Hesitation and high KR Cold weather issues?

Started by ShoBoat, April 05, 2015, 12:19:47 PM

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ShoBoat


Quote from: panther427 on April 30, 2015, 10:21:06 AM
Take a look at this sae study on gtdi/tgdi. Wonder if you could be experiencing this.
http://www.stratifiedauto.com/blog/low-speed-pre-ignition-in-the-mazdaspeed-disi-and-ford-ecoboost-motors/

http://papers.sae.org/2015-01-0758/

Interesting read, could be in regards to the KR I was seeing. But I am pretty sure that was winter gas. I am going to do the BG fuel service, I know that FMC isn't crazy about this type of service. However they have been doing it on turbo cars forever. And if you think back to the carb days of old they had a similar issue of "cooking" of the valves. The fuel was not sprayed like in TPFI right on the valves. So we have come full circle. And back in those days it was a can of carb cleaner and away you went ;).


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2012 Pearl White CTS-V Stock
2016 Fusion Titanium 2.0 EB Stock
2013 SHO Black on Black (Gone) PP, Unleashed Custom Tune, 170 TStat, SP534 Plugs, 3 Bar, Airaid Intake, PPE catted downpipes, Corsa Cat-back, H&R Springs. Focal 165KR Front Stage,2 JL W6 10 with Focal 800.1. 12.62 @ 110 mph.

ShoBoat

Just wanted to give a final update on this issue. It has stayed gone.... I still can't 100% point to a solution, maybe several things as stated earlier. She is still pulling timing but not at the same level as before. I tried a few different gas stations. And the 93 Esso had the worst KR (Weird since it's a really busy one), with the best being a Petro Canada 94 station. WOT HP fuel stays above 1800 PSI at all times, KR on the 94 Petro doesn't see above 3.0. I just wish I knew for sure what the issue was. One more mention that all the Gas in my area at least above 91 has 10% corn.
2012 Pearl White CTS-V Stock
2016 Fusion Titanium 2.0 EB Stock
2013 SHO Black on Black (Gone) PP, Unleashed Custom Tune, 170 TStat, SP534 Plugs, 3 Bar, Airaid Intake, PPE catted downpipes, Corsa Cat-back, H&R Springs. Focal 165KR Front Stage,2 JL W6 10 with Focal 800.1. 12.62 @ 110 mph.

ShoBoat

So it seems that I have resolved my weird KR issues, and let's just say it wasn't what I expected at all. I know have 0 KR pretty much all the time. Even lugging in a high gear at 55 to 70 mph. I have seen boost levels as high as 9 psi in 6th with no KR in fact it's adding timing same as last year. Now that I have a fix I will post a how to.


Sent from my iPhone using Tapatalk
2012 Pearl White CTS-V Stock
2016 Fusion Titanium 2.0 EB Stock
2013 SHO Black on Black (Gone) PP, Unleashed Custom Tune, 170 TStat, SP534 Plugs, 3 Bar, Airaid Intake, PPE catted downpipes, Corsa Cat-back, H&R Springs. Focal 165KR Front Stage,2 JL W6 10 with Focal 800.1. 12.62 @ 110 mph.

ecoboostsho

Excellent!  Can't wait to hear what it was.
2013 White SHO w/PP, Gearhead Tuned, 3 Bar, 160T, Plugs...Mess with the Bull and you'll get the Horn. :)
Previous 2011 Tuxedo Black SHO w/PP - 12.89 1/4 Mile