Biggerdogg01

Hi George, This truck is already supercharged, I am building a 408 to go with it. It is tuned with HP Tuners. Thanks

Hi Everyone, I am currently building a LS 408, Whipple Supercharged engine for my 2017 Silverad0 2500hd 6.0l. I will not tow heavy load very often, and the truck is my daily driver....just wanting to have some fun. Currently the 10.5 differentials are geared at 4.10, but with the future increase in engine power, I feel the 4.10 gears will be a bit much for take off, as it will rev to fast? I am going to install an Eaton Trutrac assembly in the rear, but wanted your EXPERT opinions on the gears? Advice appreciated.

Hi Larry, Boy, that answer sounds so familiar. I ended up purchasing a smoke machine and found no leaks. It was all in the tune parameters. I also had the surging at around 2000 rpm, which I thought was a lean condition. The way that I described it to Whipple was I was feeling almost a flat spot in the throttle. I felt as if the engine was starving for fuel at this point. When I data logged a test run, it showed that I had very high fuel trim levels. I never really got rid of this condition with the assistance of Whipple. I experienced either extreme changes one way or another from them. My suggestion is to contact my tuner. Ted Jannetty at Jannetty Racing made so much power, it was night and day difference from Whipple. Whipples product is awesome, but you have to remember that they are using several tuning programs, and every one of us comes from a different area in the states and each truck has different running conditions. Ted will read your data log and find issues and make changes that will fix your running condition. https://jannettyracing.com/, tell them Randy sent you. He will email with you with no problem.

Well, I learned several things on our trip from CT to TN. First of all, I need to speak with my tuner and find out if under driving the supercharger will keep me out of boost at certain rpm ranges. The tune in my truck is set up for the most horsepower, this does not make for the best towing, thank goodness it will be at least another year before I tow again. The second thing that I learned with a supercharger is, you cannot use cruise control! I love my cruise control, however, cruise control is set off vacuum, and when the engine starts making boost, the speed continues to climb and I would have to turn off the cruise. One thing that was very enlightening, was while entering the interstate and picking up speed, many of the semi's that were already doing the speed limit, were amazed that I was able to out run them by the end of my on-ramp. I received many thumbs up from them. And lastly..…….when your truck is set up for getting the most horsepower, I found out that the average fuel mileage for 850 miles turned out to be approx. 6-7 mpg towing a 14,000lb 5th wheel

Larry, The issues that I had were from incorrect instructions. What type of low-end issues are you having?

The weather here in New England is hit and miss (snow and ice) but I will be towing for the first time since installing the Whipple. We are taking our 5th Wheel to Tennessee. I am excited to see how the increase in hp/tq performance pulls the hills through PA and then once we get down in VA and TN. I will post the trip once I have something to post. Oh, I also installed a Flex a Lite dual fan set-up pulling 6000cfm and leveled the truck with the Suspension Maxx leveling kit, very nice product. I came with stock spacers (I already have Bilsteins), and the kit come with from differential spacers which maintains the CV joint angle so the boots do not prematurally wear and also saves the joint.

You can get ahold of him, tell him I recommended you to him. His name is Ted Jannetty https://jannettyracing.com Randy

Unfortunately I do not, it is included and installed with the intake manifold.

Eric, Congratulations on the new truck. I am so very lucky to have a performance tuner over here that dialed my engine in after the Whipple install. You will read (if you haven't already) about people bad mouthing the E78 ECM. It is all about knowing HOW to tune it. My tuner actually calibrates a lot of Whipple's programs for them, so when speaking with them at the time of purchase, mention my guys name. I will PM you his info when you are ready. Knowing how systems on your truck work is very important. I do a lot of research before making choices and then confirming them with experts.

Hey SierraHD17, you actually have long tube headers that fit a 2017 Silverado 2500hd 6.0l? I looked at Speed Engineering and was not able to see anything close.

SierraHD17, I understand that you do not like this ECM and have issues with tuning, but as I have posted in my Whipple SC post, my truck is running so good after my tuner did his magic, that I would like to go with long tubes to add to my low end. I pull a 14K 5th wheel and the more torque I can make the better. You mentioned that you have speed engineering long tubes for your '17, but would they actually fit without modification? Trust me, I never knock anyone's opinion, but my truck just runs awesome.

I can't believe these headers are so hard to find. I was hoping one of you experts would have answered me right away...….

Ok, I have looked for quite some time and have failed to come up with any company that makes long tube headers for my 2017 2500hd 6.0l. Can any one of you lead me in the direction of this product? I was really hoping that Kook made them, but only for the 1500.

Ha e you looked at the Roadmaster suspension? I had one on my 1500 and it worked great. I ordered the u clamps to fit the 2500 ut never installed due to the heavy weight of my 5th wheel trailer. They ride very well and installed in maybe an hour. I still have them if someone wants to buy them. Sent from my SM-N960U using Tapatalk