Possible Causes of Power Loss

WickedSHO said:
Honestly I have never had the traction fully off. Never knew I had to hold the button, will get it a try today.

I will also reload the tune. See if that helps. In order to do that, I need to reload the stock tune and then the V8 tune correct?
I would personaly make an appt at the dealer and have the hubs replaced as SHOdded mentioned earlier and start from there,especially if no codes are set and the boost level is fine,sounds to me your issues started around the same time as the clicking noise correct?
 
WickedSHO said:
14SHOCAR, I think I have this info in my signature, 2014 SHO Ignot Silver. MDesign CF Intake, 3 BAR MAP, 160 T-Stat, LMS 93 OCT V8 tune.

ZSHO, turning traction control off fully is press break and double tap traction button correct?
Double tap puts it in advance trak sport mode which is higher thresholds for both tc and esc but still intervene in case the shenanigans get too intense.

A couple weeks ago while in that mode I was able to get the ass end out quite a bit with no intervention. That is the mode I am in unless I'm on the track or seriously feeling the need for speed and I'm by myself in Mexico.
 
Hey Guys,

So I just got back in from returning my car back to stock for its trip to the dealer tomorrow. While I had the MyCal tuner connected, it reported that there were two DTC's that needed to be cleared. The two are P008B and B1215.

Quick search tells me that P008B is for "Low Pressure Fuel Pump"? Not sure about B1215.

Causes of my recent power issues?
 
That could explain your problem as I have read of a few ecoboosters having the low pressure fuel pump replaced after experiencing power loss.
 
Agreed.  Low pressure fuel pump and/or fuel module controller.  BiGMaC put this issue in the spotlight with his 2013 SHO.
 
I'd recommend telling your dealer to check the battery also. This is to cover the flashing the tune process. From my understanding they see a tune flash and a battery disconnect as the same thing in there scan process. Pretty sure it gives a date of "flash" also. So a red flag to them could be the "flash" a day prior with no battery problems. Give em some story of it being dead a week ago and you've been hooking it up at night to trickle charge it.

Rich

 
Could the DTC for Low Pressure Fuel System - Too High, because caused by the E-85 I am putting in my car?

This last fill up I put in 3 gallons of E-85 and about 6 or so of Shell 93.
 
I fill up when I get to about half tank. Usually about 8 gallons or so. This last time I added 3 gal of E-85 and 6 of 93. There still could have been E-85 in there from my previous fill up. So the ratio could have been off?
 
WickedSHO said:
I fill up when I get to about half tank. Usually about 8 gallons or so. This last time I added 3 gal of E-85 and 6 of 93. There still could have been E-85 in there from my previous fill up. So the ratio could have been off?
After your first fill of E85 you're going to have to cut back on the ratio added. I've been mixing for almost a year now and find that a 17% E target works great, and would be something on the threshold of margin of error for the factory parts to handle.

Rich

 
I'll cut out the E-85 for now and do my next couple of fill up's with only 93. See if that DTC comes back.

When I am watching my LPFP and HPFP numbers, are there any ranges I should be looking for. Something normal?
 
Do you run torque?

I doubt the e-85 is your issue but knowing fuel trims and rail pressure would be helpful.

I've ran 70+% in both cars and no dtcs or cels. Pretty sure wass had same experience.

That being said that was for science, not daily driving because it will tax the **** 💩 out of fuel ⛽.system headroom in certain parts of the rev range.

I wouldn't cut out the E85 completely but tone it down a bit.

And I agree with Rich, less is more and my new BBG seems to like 20ish. (with a splash of meth😉 ) this also puts you in the range of plausible deniability if something were to happen since e-15 is ok on our cars. If they tested and you had 40-50, they might take issue with that.

You can run 30 all day long but you will see some Kr spikes due to fuel volume.

I'd like to see your fuel trims and rail pressure....wot2-3 and wot 3-2, which is where the fuel volume issues like to creep up.

 
I honestly don't think I am monitoring short and long term fuel trims.

As for KR's.....While tuned I have seen as high as +2.0 and as low as -2.0. Nothing outside that range. I usually only get positive KR in a WOT run, but never higher than +2.0.
 
WickedSHO said:
I honestly don't think I am monitoring short and long term fuel trims.

As for KR's.....While tuned I have seen as high as +2.0 and as low as -2.0. Nothing outside that range. I usually only get positive KR in a WOT run, but never higher than +2.0.
Are you using Torque? If so what formula are you using for knock? I would expect -4's on a regular basis with that much e-85...just wondering if you had the "old" formula which mistakingly showed half the knock you really had.

Never mind...I see you run Torque.
 
Well its been out for long time but depends on when you started. Go to the data logging forum and click on the stickied PID at the top (Torque PIDs take 2) and double check.
 
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