Kennedy Diesel-owner
More than just a salesman-I use and test the products that I sell on a daily basis!
Superflow Lie Detector in house
2002 Chev K2500HD D/A CC Long LT 11.77@ 124mph at 7700# fuel only-e.t. needs help
2005 Chev K3500SRW D/A CC Long LT(SOLD)
2007 Chev K2500 Classic EC Short LT (Sold)
2012 GMC K3500SRW D/A CC Long LTZ Happy Birthday to me! Built 1 working day after my birthday and delivered 7 days later.
2016 GMC K3500SRW D/A CC short LTZ
Custom tuning in house using EFI Live tuning software!
Well, he was serious. I received the KD boost valve in like new condition. Thanks Linchhummmer.
I put it through a rigorous and thorough test. It worked perfectly, as advertised. Details of my test procedure and results are available upon request. The end result was very pleasing, and surprising. My boost gage goes up to 30 PSI, and with the valve at full adjustment, the boost was rocketing past that in a hurry. However, at stock fuel levels, there was almost no discernible gains I could tell. Perhaps a little, but it could easily have been within a margin of error, and due to changing conditions. Adding fuel was the key, and had profound results. An added benefit was, as the boost climbed quicker, EGT's climbed slower. A very nice side effect.
Although this little, unimpressive looking device is quite expensive for what it appears to be, it delivers in a big way. It's probably one of the best investments a you can make, if your goal is to increase available boost, beyond what your fueling programmer or box provides. I would have had one long ago, if I wasn't turned off by the price and appearance. Had I known then what I know now..........
The combination of JK's tune on my 2002 LB7 and the boost valve have produced the best overall towing mileage numbers of all 5 Duramax powered trucks I've owned. 275K miles of daily towing and winter snow plowing - under 1500 miles per year (up to deer camp and south to pheasant hunt) unhooked from the trailer. The combo simply rocks, and saves $$$ each tankful.
It takes more fueling to see the boost valve function propertly. It was very valuable in tuning diesel/propane/air mixtures on my previous 2001 - where 28-32psi nominal under fully loaded towing was commonplace......with only 1200 peak egts, 900-1000 nominal.
That truck would pull 12K# of boat and trailer straight up, if you could find a road that steep...
Last edited by Mark Rinker; 06-30-2008 at 20:04.
2011 Chevrolet Tahoe 5.3L daily driver
- Previous owner of two 1994 6.5L K3500s, '01, '02, and '05 6.6L K2500s, '04 C4500, '06 K3500 dually, '06 K3500 SRW, '09 K3500HD SRW, '05 Denali
- Total GM diesel miles to date : ~950K
Thanks for the heads up. Unfortunately, he'll probably keep the negativity in his signature...
Kennedy Diesel-owner
More than just a salesman-I use and test the products that I sell on a daily basis!
Superflow Lie Detector in house
2002 Chev K2500HD D/A CC Long LT 11.77@ 124mph at 7700# fuel only-e.t. needs help
2005 Chev K3500SRW D/A CC Long LT(SOLD)
2007 Chev K2500 Classic EC Short LT (Sold)
2012 GMC K3500SRW D/A CC Long LTZ Happy Birthday to me! Built 1 working day after my birthday and delivered 7 days later.
2016 GMC K3500SRW D/A CC short LTZ
Custom tuning in house using EFI Live tuning software!
Just disappointed that someone would publicly condemn a fully functional (and mfr inspected/tested) product without testing on another vehicle.
Oh well, Dmax Mav got a heck of a deal...
Kennedy Diesel-owner
More than just a salesman-I use and test the products that I sell on a daily basis!
Superflow Lie Detector in house
2002 Chev K2500HD D/A CC Long LT 11.77@ 124mph at 7700# fuel only-e.t. needs help
2005 Chev K3500SRW D/A CC Long LT(SOLD)
2007 Chev K2500 Classic EC Short LT (Sold)
2012 GMC K3500SRW D/A CC Long LTZ Happy Birthday to me! Built 1 working day after my birthday and delivered 7 days later.
2016 GMC K3500SRW D/A CC short LTZ
Custom tuning in house using EFI Live tuning software!
Just goes to prove you can please some of the people, all of the time. You can please All of the people some of the time, but you can't please all of the people all of the time.
02 2500HD LT D/A SB CC 4X4 BLACK, Westin stainless nerf bars, BW GN Hitch,Racor 60S post oem fuel filter, Oil Guard bypass engine oil Filter. All synthetic fluids. Kennedy boost valve, edge, Modified air intake,EGT & Boost digital gauge,TransferFlow combo fuel & tool box, Air Lift Suspesion Bags Rear & compressor with remote, Bilsteins front & rear, Frontier front replacement bumper.