Something is definitely not right with your truck.. I ran 14.9 with drop in K&N filter and mufler with my 20s on the stock 5.3. With 9lbs on my LQ4 I'm running in the 12s all day long.

 

You don't have to drive that far. Send him some logs and he can email a new tune. If you drive down to Odessa Friday I'm going to be at track and can log your truck.

 

My 240K mile 5.3, pushing 4900Lbs runs 15.2 at 90 MPH. Headers and a catback being the only mods. Thats also with heavy 32" tires.

 

thanks for the offer! I'll try to see if I can find someone locally that can log it. If not, I will definitely take up your offer

 

It sounds like its not even getting into boost. And I would just take it to someone in Houston. There are tons of shops there that can do it.

 

my ext cab has gone a 7.63 @ 93 mph and a 12.21@ 113 in the 1/4. I would say he set the tune up extremely safe. Check all your plugs and check the reference line on the wastegate and make sure you are making boost! Sounds like something is way off!

 

Im curious to see your slip. I bet your '60ft is terrible, even with that being said, something has to be off. Your trapping 75mph which is low 9's IMO.
I would check plugs,wires, wastegate, vacuum lines, etc... make sure everything is in working order. Then get Allen to work in the details. Im sure he has you on a safe tune.

 

Time for a dyno tune

 

maybe, if its a load bearing dyno then that would help.
Tuning a turbo on the dyno and street are two different beasts...

 

Do you have a boost gauge? There has to be a boost leak somewhere I am thinking.