2016 Gt350 lag/hesitation between 2700 and 3000 rpm

Adriano S.

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Hello everyone , my name is Adriano and im writing from Switzerland. So far I have been involved only in vintage Shelbys, but i decided to get also a DD modern shelby so i got myself a Track pack magnetic grey / black stripes Gt350. The car runs fine , the only thing i noticed that, sometimes, I have a sort of lag between 2700 and 3000 rpm's. Anyone had such a problem in the past , if yes what was the cure? ( id did not run yet any diagnostic on the car) the car has 1300 miles as I write. No modifications apart the Ford P. by Borla exhaust ( 2.5 inches) ( car did have hesitation also before the installation of the new exhaust) . >THX!! :cheers:





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KenF

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I can tell you the car is sluggish up til ~3000-3200 rpm where the engine wakes up and screams to redline. it seems to be just a function of the 5.2 and it's behavior. Now it's not a massive hesitation or anything it simply feels slower and then picks up nothing too dramatic. If you have a massive hesitation something else is up
 

lemers

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Its also sluggish in that range if you are already moving when you try to accelerate
 
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Adriano S.

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i also asked a good friend of mine who has as me quite a bit of experience in cars to try the car , in a 5 minutes drive he had the same feeling that aorund 2700-3000 rpms the car, if u keep the accelerator at the same throttle rate , has sometimes a hesitation , a sort of slowing down effect in terms of acceleration , but below that range and above it all is just fluid, As you stated its something small but you still do feel that small lag effect at those rpms.
 
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Adriano S.

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at or above 4k i would even say :)
 

firestarter2

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I think its a cam profile shift(for lack of a better word). But its normal if annoying. Even the tunes have it.
 

Krogen

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Does the behavior change in the different drive modes? Although, it's not very noticeable to me, apparently throttle response is different in normal, sport, track and weather modes.
 

nastang87xx

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Look at the dyno graphs. 2500 - 3200 is just appalling. A few tunes have been able to take that dip out though.
 

PencilGeek

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