First Off I'd like to say THANK YOU Patrick for going over everything in the greatest of detail and making sure I was happy with the end product, when we get some cold air im going to run it at the track to see what it will do !! Now on with the show.

The First pull we made was a baseline pull with no tune to see what the truck could do with just Headers and exhaust. It ended up putting down 346RWHP/355ishRWTQ. I didn't get that pull on video however.

The Second pull was with the tune, it ended up making 362rwhp/360rwtq. Keep it mind it was hard to tell where the peak torque was coming in at cause he couldn't keep it from downshifting out of third with his TCM Tune so he had to romp it from a dead stop on the dyno.

2011 GMC Sierra 6.2L First Dyno Tune Pull - YouTube

The Third Pull was a big crazy and had to be shut down cause it loosened one of the strap on the dyno lmao.

2011 GMC Sierra 6.2L Second Dyno Tune Pull W/Traction issues - YouTube

The Fourth Pull was the last pull before we put the M.I.T Tube/K&N, It made 361rwhp/370ishrwtq on this pull

2011 GMC Sierra 6.2L Third Dyno Tune Pull - YouTube

The Fifth Pull was done after adding the M.I.T Tube/K&N, it made 371rwhp/377rwtq with no changes to the tune what so ever. 9RWHP and 10rwtq not bad for 140$.

2011 GMC Sierra 6.2L Forth Dyno Tune Pull - YouTube

The Final Pull was done after adjusting the tune slightly, Pat added a bit more fuel and backed the timing off some. It managed to hit the rev limter so he had to back off the trottle lol. Final numbers are 366RWHP/372RWTQ.

2011 GMC Sierra 6.2L Fifth Dyno Tune Pull (Final Pull) - YouTube

This last video is a quick 20-90 run after heading out, I went back afterwards to get the shift firmness bumpped up a tad. Enjoy !

2011 GMC Sierra 6.2L Tuned 20-90 Roll - YouTube

Below is the Dyno graphs, From 65MPH up is where the third gear pull is.

 

Badass man truck is putting down some real good power! If you don't mind me asking how much did he charge you for all the tuning and were did he do it at? I'm really interested in getting him to tune my truck. Last I heard pat g was from Victoria? Anyways congrats man should run good at the track.

 

nicee!! its making some good power now!!! damn u and u 2wd guys!!...cant wait to see the 1/4 mile times to match

 

Nice steven! I can't get over him just flooring it from a stop on the dyno lol.

I call the first race!!!

 

Below is the Dyno graphs, From 65MPH up is where the third gear pull is.[/QUOTE]


After looking at your dyno graphs they look WAYYYY different than mine!
Yours are very jumpy and mine seems to be a broad curve...
Anyone know why they would be so different?
Our trucks are identical except the headers/ory.

 

Its just spikey from the shifts, if you look at the graph and just take the 65mph to 100mph or so its roughly the same thing, yours is zoomed in alot, my dyno sheets are over the course of three shifts.

 

Gotcha!!

 

Nice!

 

NICE GAINS !!!! Congrats
your truck must fly
i dyno tuned my 2500hd with the 6.0L, what a difference.

https://www.performancetrucks.net/fo...dynoed-489455/

 

What was your timing on the 371rwhp pull vs the last pull?