as for the article...gm has employed this strategy on many trucks for many years...nothing really new there.

 

yup, found it. what it seems to be is Power Enrichment Rate. it's a number between 0-2, and the closer to zero it is, the slower the transition occurs.

'07 vette has it set at 1.0, escalade has it at 0.05, making it much slower to transition. the reason why it was on my mind because this morning i fixed a car that had a lean spike causing a KR that would pull timing for a whole run. so i sped up the PE Rate, car got the proper amount of fuel quicker as it needed it badly, the throttle response on this car is incredible (it's a very well designed NA LS2 setup). no more spike, no more knock, full spark and proper burn through the whole run without any other corrections. i guess if you want fuel efficiency (while driving a heavy truck with aerodynamics of a lunchbox) keep it toward 0.0, or toward 2.0 if you're making lots of torque quickly and need the fuel to catch up.

 

thats only part of it really Marcin...there is an actual delay timer in the code...0ing out the delays in the power enrichment form basically do the same thing as 0ing out that delay.

The enrichment rate just allows you to reach your maximum pe enrichment faster...setting it to 1.0 makes it pretty much instantaneous...many trucks have it set to .019 or something super low...but again thats only part of the story.

 

is this power enrichment junk used on the 4.8 and 5.3 as well????

 

all trucks...even I4 & I5 colorados and canyons

its pretty much universal for gm to do this on their trucks & suvs

 

Thanx for the info guys,
anymore know if my core from my 04 can be used for the new truck if i send it to Nelson's for programming.

 

if your 07 pcm is one of the classics then yes it should be the same, don't quote me though, if the 07 isnt a classic then no...completely different.

 

That's what i figured, pcm core i have is from an o4, new truck will be
07 next gen.

 

hp tuners will work on the new pcms.........right???????? i hope so cause i already bought it.

 

so what do we need to do to get rid of the delay? what tables are we looking at or has hpt found them all yet?