Take off has hesitation

[Khorus]

Sooooooooooooooooooo.......... Welcome to turbo lag...... This is the unfortunate truth for any vehicle with a turbo. My 280ZX does the same thing and it has a manual transmission so it takes a moment to get things going. Before I got the Livernois tune it still had some lag when preloading the torque converter(hold the gas and break at the same time) but wasn't bad. After I got the Livernois tune it did way better with reloading, as for normal takeoff it still has that delay.

Didn't feel like lag, best I can equate is slipping, I put 700 miles on it in the week I've had it and now all is normal.

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[Tim Vogt Sr.]

Mine has around 8500 miles and has/had an issue shifting from a cold start. It is slowly improving. The truck would start out fine but stumble at the 3-4 shift, though not by the same amount every time. My plan is to wait a little longer and take it back to the dealer for reprogramming if needed.

 

[VAMike]

Not sure if sitting on the lot for so many months with no miles or if indeed the trans has to learn and it took that long but everything is finally normal.

Yes, it's completely normal that the transmission needs several hundred miles before it shifts well.

 

[Gizmokid2005]

As others have mentioned, this happening when it's new (or after an extended power off situation likely), is normal. It's the "adaptive learning" that our transmissions go through to determine the best shifting points/etc based on specific hardware and driving patterns. You can find it on page 154 of your manual.

 

[ch47dmechanic]

I suspect this is done to reduce the potential for wheel spin in first gear.

 

[Khorus]

I put 800 miles on it since 29th. It had gotten much better, changed the BOV yesterday and now it is perfect.

 

[Tim Vogt Sr.]

I put 800 miles on it since 29th. It had gotten much better, changed the BOV yesterday and now it is perfect.

BOV?

 

[P. A. Schilke]

BOV?

Blow Off Valve....

 

[tgRanger]

I put 800 miles on it since 29th. It had gotten much better, changed the BOV yesterday and now it is perfect.

Glad to hear your enjoying your DV+

 

[Khorus]

Glad to hear your enjoying your DV+

Definitely makes a difference in throttle and shifting.

 

[tgRanger]

Definitely makes a difference in throttle and shifting.

Did you install it with the HeliCoils I sent?

 

[Khorus]

Did you install it with the HeliCoils I sent?

I installed without for now, keeping for when I have to take back off if / when I do.

 

[Racket]

After nearly 2000 miles I realized 87 octane was not giving me smooth low-end performance. Up to 40 mph the engine wasn't consistent. I read other drivers blaming injectors so I bout a bottle of injector cleaner at 5000 Miles. Maybe that helped. Found a station that sold ethanol-free 87 but it was as expensive as 93 octane with 'up to' 10% ethanol. The ethanol-free gas actually ran pretty well. Ran some E15 88 octane and that seemed pretty good under boost, but the gas mileage plummeted. Topped off with some 94 octane (cha-ching) and that was pretty good. But I'm not going to knock myself out going that all the time. Sticking with mid-grade and just installed an 89 octane tune from Torrie/Unleashed.

 

[Frenchy]

After nearly 2000 miles I realized 87 octane was not giving me smooth low-end performance. Up to 40 mph the engine wasn't consistent. I read other drivers blaming injectors so I bout a bottle of injector cleaner at 5000 Mike's. Maybe that helped. Found a station that sold ethanol-free 87 but it was as expensive as 93 octane with 'up to' 10% ethanol. The ethanol-free gas actually ran pretty well. Ran some E15 88 octane and that seemed pretty good under boost, but the gas mileage plummeted. Topped off with some 94 octane (cha-ching) and that was pretty good. But I'm not going to knock myself out going that all the time. Sticking with mid-grade and just installed an 89 octane tune from Torrie/Unleashed.

If you can somehow by magic manange to keep you foot out of it(yes I know, very hard to do so) the truck will get better fuel mileage with premium fuel. I ran my truck on 87 at first for a while then read that for towing and better performance to use premium fuel(91 and above). I decided to do the switch to see what would happen. I was impressed, I got better overall response and I got better MPG(1-2 at best) and I decided it was worth the extra cost. Now I have a tune from Livernois and it have even more power and response with another gain of MPG(roughly 2 MPG gain). Different factors make a big difference and mind you I go up STEEP grades going to and from work here in tge Rockies. Just something to remember.

 

[Racket]

If you can somehow by magic manange to keep you foot out of it(yes I know, very hard to do so) the truck will get better fuel mileage with premium fuel. I ran my truck on 87 at first for a while then read that for towing and better performance to use premium fuel(91 and above). I decided to do the switch to see what would happen. I was impressed, I got better overall response and I got better MPG(1-2 at best) and I decided it was worth the extra cost. Now I have a tune from Livernois and it have even more power and response with another gain of MPG(roughly 2 MPG gain). Different factors make a big difference and mind you I go up STEEP grades going to and from work here in tge Rockies. Just something to remember.

Totally expect better gas mileage with higher octane. I just have to justify the cost difference for the mpg since the truck makes good power by itself.

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