Just wanted to know what you guys think my truck should be running in the quarter:

2005 GMC Yukon Denali AWD 6.0L LQ4
175812 miles
Whipple 2.3 with 3.00” pulley
2 step colder plugs
Airaid open filter element
Airaid tb spacer
Moroso catch can
corvette servo
Whipple fuel rails and injectors
stock Delphi fuel pump with kb bap
tuned
stock engine, heads, gearing, cam, transmission, torque converter and exhaust

 

Depends on alot of factors. What fuel, how aggressive is the tune, how much boost?
I dont see it making a whole lot of power with a stock fuel pump unless its some special Delphi pump.

Back in the day my truck ran 13.1s on with a rear mount turbo on 6psi, stock LQ4, Stock 4L80E, 3.42s, and weighed 5150#
Thats the closest thing i can compare it to.

 

Too many factors including weather and driver experience, plus it's heavy with a 4l60=13.3-14.2 is my range guess.

 

13.8.

 

13.1 @ 101

 

Must be something I’m doing wrong or maybe something wrong with the truck because I can’t surpass mid 14’s

 

What's your 60 foot time?

If that is really slow, you'll never get down the track fast unless tons of power comes in later on.

And if you removed about 500lbs, it would go a decent amount quicker. At a guess your truck is 5,500lbs.

 

my 60’ times were horrible. In the ranges of 2.3 to 2.6

 

Dang. My truck ran high 14s stock.
Do you have a datalog? Is the heat exchanger water pump working? High IATs?
Is it going lean? When does boost come in? Boost nice and smooth up top, no belt slip?

 

yeah I know, my times sucks for a high boosted Yukon. Yes I need to datalog while I’m running just to see what it’s doing. The entire kit is brand new, the pump is working. I’m pretty sure my iat’s are high. I probably need to maybe upgrade the reservoir, heat exchanger or pump since I’ve upgraded the pulley, since the kit is manufactured around a stock vehicle and stock boost. I had a reputable tuner tune it but I can’t put it past him that it may be running lean. I don’t have a boost gauge but the torque hits good and flat all the way through and I doubt I have slip issues since I don’t have any belt dust