I got my 2011 chevy Silverado dyno tuned today. It only has 650 miles on it and here is the mods below.... I Break all my vehicles in real hard after 200 miles and i always get good dyno results.

160 thermostat
Volant CAI
ARH 1 7/8 Longtube headers with cats into a Borla XR1 3.5 race muffler (straight thru) I put on myself dumped TILL TODAY! I just had ARH route the exhaust out the side in front of the right rear wheel with 2 stainless tips that are staggered. Let me tell you it looks good and sounds sick!!!!!!

all numbers are uncorrected and on a Mustang dyno. all dyno pulls were performed in 4th gear. if your worried about your stock driveshaft than change it cause i wasn't!!!

FIRST PULL BASELINE UNTUNED/UNCORRECTED 338 RWHP 366 Torque

3 PULLS LATER TUNED 362 RWHP AND 376 TORQUE

OF COURSE TORQUE MANAGEMENT AND ALL THE OTHER BS IS HISTORY. FIRMED UP THE SHIFTS, PART THROTTLE SHIFTS, AND SHIFT POINTS, REV LIMITER IS @ 6600 WHICH I TESTED DOING SOME FIRST GEAR BURNOUTS.

conclusion = BEAST for what it is and what it has!

 

Those are good numbers! I was too scared to do a 4th gear run!
I pulled 340/352 in 3rd. I wish I could get a true number though. I'd like to know your track times!

 

Good numbers. Mustangs runs a little numbers too
what is your drivenshaft set up,
single or 2 piece, steel or aluminum.
2wd or 4wd.
any idea what speed you hit in 4th

 

Very nice.

 

Won't a 4th gear run still not give a true # since it is 1.2:1?

I'm sure it is still much closer than 3rd though. I will get my truck dynotuned after my Kooks and 4.11s go in and am pondering the driveshaft myself. I have the big 1 piece aluminum one (but it is still a little shorter than a 2wd truck at least) and after seeing some of the posts here may upgrade it before then too.

Seeing these #s on a Mustang dyno has my hopes up.

 

Having the stock shaft balanced for higher speed may be enough, but I don't know for sure.
The factory balance is for your tire rating, so about 100mph.
If you end up running 120 on a dyno, it is a risk.

I had a nnbs 07 2wd xcab. It had a 96 inch one peice alum shaft. 6 inch diamater
I tried to dyno that truck but is started to shake pretty bad so I stopped.
I'd say that d/shaft would have looked like a skipping rope at 120.

 

Good numbers

 

Well ****, I've been being a good boy and not going to wot and I've got almost 400 miles on mine! I guess I better go out and see where the shift points are RIGHT NOW!

 

Do It! BTW great numbers................

 

Haven't noticed any excessive vibration on my burban.