acceleration dead spot

[cseverens]

not sure if it's normal, but between 1400-1800 or so rpm, the engine is awful. it doesn't matter if I'm in S or D. anyone else notice that? I do have a tune from torrie, but doubt it's related. it's not from a hard stop. it's if I'm just cruising and press the gas pedal while it's in that range.

 

[14SHOCAR]

That sounds about right.

 

[glock-coma]

I think this the rpm range where the ECOBOOST has a very small amount of turbo lag.

 

[BiGMaC]

Agree....Sounds like it could be you're aware of the very slight turbo lag... Stock tune had my turbos becoming effective about 2100-2200 rpm... When I added the Downpipes the spike in TQ and HP rise on the dyno moved down to 1600-1700 rpms... More pull down low. Again this is all stock tuned... After adding the tune with DP adjustment the low end really pulled.

 

[Blackhawk]

I have something similar.  If I am cruising at the same speed for a bit and try to accelerate it doesn't respond.  When it happens I can keep the pedal in the same position for like 5 seconds and it still won't accelerate.  Once I let off and push in again it accelerates just fine. 

 

 

[FoMoCoSHO]

I have something similar.  If I am cruising at the same speed for a bit and try to accelerate it doesn't respond.  When it happens I can keep the pedal in the same position for like 5 seconds and it still won't accelerate.  Once I let off and push in again it accelerates just fine. 

That happened a lot on the 2013 but hasn't happened on the new one at all.

 

[SHOdded]

Response/shift logic change, maybe?

 

[cseverens]

well, i ordered ppe downpipes 9/1. manufacturer issues result in me not getting them for another 2-3 weeks still(unreal). hopefully that will help once I have those and the magnaflow x pipe installed in place of the 3rd cat.

 

[FoMoCoSHO]

Response/shift logic change, maybe?

I know something changed, I had completely forgotten about it on the old car till this thread.

I know on the old car when it happened it felt like the car was confused the figured it out and off she went.

 

[ZSHO]

I think its that winter blend gas,probably be best to send Torrie a log,probably need a tweak in the tune,sometimes they adjust the throttle blade at various points which they close and open slower to keep from having any issues like hesitation.  Z

 

[glock-coma]

I have something similar.  If I am cruising at the same speed for a bit and try to accelerate it doesn't respond.  When it happens I can keep the pedal in the same position for like 5 seconds and it still won't accelerate.  Once I let off and push in again it accelerates just fine. 

I wonder if doing a throttle pedal recalibration would fix this. I know there was a how to somewhere on the forum.

 

[gladams]

I have something similar.  If I am cruising at the same speed for a bit and try to accelerate it doesn't respond.  When it happens I can keep the pedal in the same position for like 5 seconds and it still won't accelerate.  Once I let off and push in again it accelerates just fine. 

I wonder if doing a throttle pedal recalibration would fix this. I know there was a how to somewhere on the forum.

Is this where you turn the car on (do not start car) mash pedal to the floor. Let your foot slide off the side of pedal, to allow pedal to raise fast. Turn off the car and wait 30sec. Start car and drive as normal or like you stole it. I did this and throttle responce was better, not perfect, without a tune.

 

[Blackhawk]

When do they start winterblend gas?  I did just start to notice it in the past month or so.  It's to the point where I am considering detuning and taking it in to the dealer.  If it was the tune I would think I would have always noticed it.

I think its that winter blend gas,probably be best to send Torrie a log,probably need a tweak in the tune,sometimes they adjust the throttle blade at various points which they close and open slower to keep from having any issues like hesitation.  Z

 

[FoMoCoSHO]

When do they start winterblend gas?  I did just start to notice it in the past month or so.

I think its that winter blend gas,probably be best to send Torrie a log,probably need a tweak in the tune,sometimes they adjust the throttle blade at various points which they close and open slower to keep from having any issues like hesitation.  Z

I think BND Bryan said 9/15

 

[ZSHO]

When do they start winterblend gas?  I did just start to notice it in the past month or so.  It's to the point where I am considering detuning and taking it in to the dealer.  If it was the tune I would think I would have always noticed it.

I think its that winter blend gas,probably be best to send Torrie a log,probably need a tweak in the tune,sometimes they adjust the throttle blade at various points which they close and open slower to keep from having any issues like hesitation.  Z

Based on this report the (winter blend)gasoline officially started on 9/16/15.  Z          http://www.atlasoil.com/Blog/Winter-Blend-Gasoline-is-on-its-Way Hope this helps any.

 

[cseverens]

I'm going to try the recal steps. the throttle does seem jumpy at time anyways.

 

[Blackhawk]

Thanks for the help guys, that does seem like it might line up. I'll try the pedal re-calibrate thing as well as get a log for Torrie.  It's really been bugging me out.

When do they start winterblend gas?  I did just start to notice it in the past month or so.  It's to the point where I am considering detuning and taking it in to the dealer.  If it was the tune I would think I would have always noticed it.

I think its that winter blend gas,probably be best to send Torrie a log,probably need a tweak in the tune,sometimes they adjust the throttle blade at various points which they close and open slower to keep from having any issues like hesitation.  Z

Based on this report the (winter blend)gasoline officially started on 9/16/15.  Z          http://www.atlasoil.com/Blog/Winter-Blend-Gasoline-is-on-its-Way Hope this helps any.

 

[FoMoCoSHO]

For any of the Unleashed guys, problem or not, I highly recommend the log/retune process. It doesn't cost anything except some time and a blast down your favorite highway on ramp.

I'm not very deep on the 2015 but the 2013 got better every cycle, sometimes just a little but by the time I traded it, the car was about as perfect as I could ask for.

Imagine my horror on the drive to the dealership when i flashed it back to stock, lol.

11 total tune revisions.

 

[ajpturbo]

I second that

 

[92BlackGT]

For any of the Unleashed guys, problem or not, I highly recommend the log/retune process. It doesn't cost anything except some time and a blast down your favorite highway on ramp.

I'm not very deep on the 2015 but the 2013 got better every cycle, sometimes just a little but by the time I traded it, the car was about as perfect as I could ask for.

Imagine my horror on the drive to the dealership when i flashed it back to stock, lol.

11 total tune revisions.

I need to do this to take advantage of the E