tcr

Has anyone dyno'd their 6.7L after deletes BUT without a tuner increasing the HP? I can't believe how strong my 2012 is on the stock H&S tune compared to completely stock undeleted form.

T210DRVR

I don't know, but instead of having as much as 30% recirculated exhaust gas you are getting 100% clean O2 rich air to the combustion chamber. Combined with the lower pumping losses by not having the restrictive DPF should result in more power output. My seat of pants feeling says about 20 HP, but when pulling my heavy fifth wheel up a local mountain I'm still in 3rd gear. It's not enough to pull it in 4th though I make it further up the hill before it has to drop into 3rd.

Mike Holmen

I dynoed mine. My on stock was 275rwhp and 650rwhp, H&S black maxx. My truck also dynoed 420rwhp on **** hot and 800ft*lbs. Mild was 300rwhp and 680ft*lbs.

tcr

So 275/650 was on a stock deleted truck?

Mike Holmen

Stock exhaust with a $40 (ok scrap home made delete). Just the dpf/2nd cat was removed. The first cat was still in being used.

All the emission sensors was disconnected egr soleniod, egr sensor, egr cooler, egt probes, dpf dP and the throttle butterfly valve. The egr cooler and egr soleniod are still present.

T210DRVR

Sounds about right Mike. I pulled the local hill today with my toy hauler fully loaded and MiniMax on mild. I would have pulled the hill at better than 60 MPH in 4th but my tranny temp kicked in the defuel. I was screwed at that and finished the climb at 55 MPH in 4th. The standard defuel setting for tranny temp was set at 165 degrees. That seems really low to me and I reset it to 185. Boost was right at 35 PSI. Any higher and the defuel would have kicked in as I have it set for 36 PSI. All other temps were fine.