Sct tuner on my 6.4 pulls extremely hard when stopped - Ford Powerstroke Diesel Forum
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post #1 of 25 Old 04-04-2014, 12:34 AM Thread Starter
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Sct tuner on my 6.4 pulls extremely hard when stopped

I'm running an sct tuner on my 6.4 with a full egr delete, turbo back exhaust, and intake
Right when I put my truck into drive, the thing wants to just take off and go. I just replaced my rotors and pads, and still no difference.
This is super annoying when I'm sitting at a light and I have to put my foot down on the brake so I don't keep creeping forwards.
The truck doesn't idle unusually high or anything, and it's done this on every tune that I've tried also
Any ideas?
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post #2 of 25 Old 04-04-2014, 05:30 AM
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Do you have gauges? If so, are you building any boost when at a stop? Even 2psi will cause it.

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post #3 of 25 Old 04-04-2014, 08:01 AM Thread Starter
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Ya just the oem boost gauge. It shows that it is building a little bit of boost
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post #4 of 25 Old 04-04-2014, 09:39 AM
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Sounds like the tune needs adjusted. When I had custom tunes I was getting a shift flare on my street tune, had them correct it and no issues. I probably should have tried my hot street to have them adjust that as well, but pansied out. The Tow tune was 100% fine from day one though.

I'd look at that part of it first, but sounds like it has to do with the tune pushing for PSI all the time.

2010 Ford F250 XLT ; 5" Diamond Eye DP Back ; 2" Rough Country Leveling Kit ; 18x9 XD Hoss's wrapped in 33 Mastercraft AXT's ; 4" Top Gun Customz Blocks ; SCT Livewire w/ Gearhead Custom Tunes : AFE Stage 2 CAI
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post #5 of 25 Old 04-04-2014, 11:12 AM
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Have you put in an aftermarket torque converter?

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post #6 of 25 Old 04-04-2014, 11:21 AM
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Quote:
Originally Posted by garyn77 View Post
Ya just the oem boost gauge. It shows that it is building a little bit of boost
OK, you should not be building boost when at a stop....period. I would try another tune first and see if it continues. If not, you need the tunes cleaned up a bit, or just a different tune. Remember the 6.4 is an animal in many ways.....no two trucks are the same. If it turns out to not be your tune, you need to check for codes.....I would look for anything related to turbos, boost sensors, EBP sensor.....

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post #7 of 25 Old 04-04-2014, 11:27 AM Thread Starter
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Ya I will have to look and see what I can do about the tune I guess

And there are no codes showing. The truck has done it since day one of installing the tuner
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post #8 of 25 Old 04-04-2014, 11:41 AM
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Quote:
Originally Posted by garyn77 View Post
Ya I will have to look and see what I can do about the tune I guess

And there are no codes showing. The truck has done it since day one of installing the tuner
Have you tried just reloading the tune? If not, give it a try. These trucks do some strange things.

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post #9 of 25 Old 04-04-2014, 01:12 PM Thread Starter
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Ya I have tried that. Also updated my tuner the other week too

Called sct this afternoon and they are looking over the tune files off my programmer. I will let you guys know what they have to say when I get a call back
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post #10 of 25 Old 04-04-2014, 04:19 PM Thread Starter
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So I talked to sct. They couldn't find anything wrong . They did suggest taking it to the dealership and having my PCM updated, and then retuning my truck
I don't see how this could solve it though. I was under the impression that when I program my truck with my tuner, that it completely wrote over the ford software. Also ford wants $160 just to reflash it
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