I have experienced a hesitation on my truck since I purchased it 6 months ago. I get a one to two second hesitation at take off from a stop. I have checked the back pressure tube and the one that goes to the turbo controller no problems. I have a Edge CTS programmer that only shows ... for EBP anyone have any ideas.

 

Called spool time


They all do it


Since boost is made from exhaust pressure it takes a second to get the system going


if going to shoot into traffic Hold the brake pedal and Get on the throttle get the boost leval up before you move


Got to change driving habbits since its not a Gasser that will react and come from a stop fast

 

higher altitude it gets longer, you will be changing your driving habits

 

Get the Atlas40 tune for your FICM from Ed.. It helps alot.

 

Jonathan, if this is a spooling problem how will reprogramming the ficm help.

 

This is from the website where I sent my FICM to. I don't know why or how it helps I just noticed quite a difference in throttle response from a complete stop.

 

Agree
Most folks report better throttle response with FICm tune

 

I am running an SCT tuner with three custom tunes from Gearhead Automotive, SRL, 8K Tow and Unlimited Tow. Now she takes off like a gasser with all three tunes. My FICM is stock. I think the engine timing or injector timing must be advanced or something, I dunno. What I do know is that I can't run stock tune anymore because I get very frustrated with the hesitation on acceleration from a stop.

 

Based on my observation:

The factory FICM programming was designed to minimize "black smoke" to be EPA friendly. As a result, if from a stop - you MASH the pedal to the floor, the PCM/FICM go in to "EPA mode" and limits fuel thus prolonging the time to "get up and go".
The FICM atlas 40 tune - (neutralizes the "EPA Mode") and allows more fuel to be injected which dramatically (at least for my 6L) reduced "turbo lag" at the expense of more "black smoke" for a second or two at take off.

 

What is an atlas 40 tune?

 

Description found here.

PHP Tunes

 

Yes the Atlast 40 gave me a minimal amount of smoke at cold start and if I smash it from a dead stop.
And Yes, it really helped with the lag......as other posters state, it drives more like a gasser, and barely downshifts on grades where it used to. Gained a solid 2 mpg on our truck.

 

I haven't notice a lot of smoke either (I'm glad.. I don't like a lot of smoke) and I'm running a cat and muffler delete. I have noticed around 1mpg gain but the throttle response is worth it.

 

Atlas 40 + Matt's SRL + =

No more turbo lag....