darkhorse220

Headlights also have a slight tint applied. I was going to blackout the lower chrome area, but will likely be doing a hidden winch bumper which replaces that piece.

Anyone running Cognito suspension lifts?

The grill comes off pretty easy and the center chrome detaches. I took mine apart, planning to spray w/ removable coating, but ended up sanding and spraying with a black chrome paint. Looks good, but should have prepped better, it has chipped some. The gold bowtie also separates from grill, making painting it very easy. I've done some pieces in vinyl wrap. That works well too. Buying nicer wrap is well worth the money, it is more workable and forgiving. Vinyl wrapping is an art to get it right, imo. Im still learning.

I was hoping for some increased whine as a secondary benefit, but i didnt notice much difference. At idle and low rpm i have a slight noise that sounds like the tensioner. Hollow sounding "ting" ..... pause.... "hollow "ting".... pause .... repeat. Definitely seems like it'd be belt related, but could maybe be internal noise to the s/c compressor. Hasn't bothered me enough to dig into it. Once you start getting into the throttle a bit, or a lot, she screams though. An evil and simultaneously heavenly scream.

I hear ya... but Whipple's tune was making me regret the S/C altogether. At least for me, the powerband was inconsisent and erratic. This seemed to be further complicated by the 10 speed not knowing where to go next. Idle even seemed rougher than i liked. Didnt want to spend more money, but the pcm is already unlocked.. so gave it a shot. Ideally done on a dyno, but theres a couple good remote tuners that can do everything via email. Literally a couple. Need to understand what you're doing with fuel tables, timing, neural network, etc. More bang for the buck on a dyno, but even a remote tune was lightyears ahead of the canned tuned. If you're happy with the Whipple tune, I'd say it probably isnt worth it. To each their own. The CAI does seem to help, low to mid throttle. I'd say it was just in my head, but mpg has been up too.

Havent heard anyone mention a cold air intake and a supercharger together. I installed the GM performance intake. I liked the rotofab and the afe, but with how the intake tube and the maf is mounted, they would have required some customization. The GM is a direct fit, which is what i wanted. Definitely will improve airflow. Mainly installed as I'm looking to get a functional ram air hood evetually, at which point ill take the plastic top cover off. The hoods funnel air and dump right over the top of existing filter location.

Whats the latest update on this Steve? Hate hearing about issues with brand new trucks.

You can get to them in the drivers side wheel well. They are between the front of the wheel well and the radiator support area. Crank the tire to the right, remove the T15 screws securing the wheel liner. At least the ones in the front to drop the liner down, and you can get to the ecm from there. On the direct opposite side of the ecm and ecm mount is the tcm, harder to see it. Make sure you've got a t87a and not a t93 before you send in the tcm.

Ya'll worry too much. A little annoying. I'd deny my warranty if i was GM. I boosted intake pressure by 8lbs. Unlocked an ecm that was specifically hard to crack, and retuned parameters specifically meant to not be changed. Gm doesnt owe you a thing. Modify it. Or leave it stock. But don't act like its gm's fault if you break something. Thats ignorance. That said, hope they find a way to tune the t93. I know a lot of camaro guys wanting it more than me.

I agree with the surging. How was the transmission been for you? Mine feels like it can get confused if it wants to drop a gear or not. Sometimes it does, sometimes it hesitates. Some of the gear changes seem a bit harsh too. The t93 isnt tuneable, so ill live with it. I heard they do some amount of learning, so i considered looking into a reset on it.

Out of the blue.

I agree that it would eliminate some weak points when adding boost. Worst case if you were to leave it stock is that you end doing everything they mentioned later. Im in the 2nd camp. If i end up tearing down for a broken valve spring, ill rebuild it back stronger. As a reference, hennessey is boosting silverados with full warranty. They add "crankcase ventilation" i.e. catch can as well as hardened push rods.

Its pretty crazy how many wire harnesses, coolant lines, etc are crammed into the engine bay. I organized mine best i could, but theres just a lot in there. Going to add a couple more lines with a catch can too. Anyone mess with the trans tuning yet?

The 6.2 is pretty awesome naturally aspirated. I had high expectations, and Whipple didnt let me down. The power is pretty crazy, especially in a 4 door pickup. No check engine lights, leaks, or issues whatsoever. Id say what impresses me just as much as a full throttle pull, is the torque at lower rpms. On the first run, i idled around the neighborhood and barely had to touch the throttle. Haven't got used to the trans yet. Seemed like it wasnt sure which gear it wanted. Punching it from a 20mph or so roll and she seemed to hesitate on which gear to grab. I havent heard much about tuning the trans yet, but i can see the value of dialing it in. As is will take some getting used to.

Installed over the weekend. Still a few loose ends to tie up before a full blown test. Pun intended.

Does anyone have any custom tuning they would be willing to share? Whipple and ProCharger supply a canned tune, but they are limited/minimal to stay within emissions regs. Obviously a tune is specific to vehicle, just figured it may be worth an ask and more discussion. May even need a new post instead of under this one.

nt them? I sent HP the new ecm. You have to give them your VIN. They unlock it and send back. Nothing needs to be done on the ecm before sending. Its an exchange, you dont get the exact one you send them back anyways. To finish the process, once you get the ecm back, you use the vcm scanner, download the info off the stock ecm, peform the physical swap, and re-upload.

Any videos of your setup?

I got my ecu from gmpartswarehouse.com Shipped fast and was as good or better than ebay pricing. I have the gm performance exhaust. I like it. Could be a little louder for me, but is good for everyday driver. My whipple is on order, just playing the waiting game. Any one have thoughts on whether long tube headers are worth it? Kind of a pain to install them.

I'm not worried about warranty. Id rather build it my way. If i blow an engine, just a great excuse to pull it and build it back bulletproof. And still cheaper than callaway/hennessey. To each their own tho. HP tuners ecm is on the way. Ill probably get the Whipple on in the next few weeks.

I know Alpine made a new radio screen and climate control setuo for the 15-19s. Ive seen other larger screen upgrades for the older models too. Any options for 19-21? Anyone try any tablet mods?

Ordered an ecm to send into HP to help reduce how long truck will be down. Still havent ordered the supercharger yet. Im thinking Whipple, although the easier install of the procharger is nice. Anyone install the Whipple themselves? Just wondering of any pointers beforehand. Any tunes out there better than the Whipple tune? What other mods/upgrades has anyone really liked? I've always built lifted trucks, wheels/tires, etc. I'm going for a bulletproof high power build on this one.

Good point. Was not thinking about the bypass.

One other thought ive been debating on... should i put on some headers while im at it? Ive got the gm performance cat back, but id headers and better flow will help power and keep temps low, plus add some throat to the exhaust sound. They can also be a pain to install. And after i broke off a rear passenger side bolt and fought exhaust leaks when i put shorties on an old 350 K series, i swore id never mess with headers on a daily driver again.

I started out initially leaning ProCharger. Did some thinking and decided on Whipple. After more thought, i remain undecided. I know overall, whipple delivers consistent power increase. You'll get the boost even at low RPMs. I was then thinking i wont be pulling or hauling too often, and running lower boost at lower rpms might actually be more ideal (less engine wear, tire wear, drivetrain, etc). Some other differences.. ProChargers tune is easier to install, they have an arrangement setup with HP already to streamline the process. Procharger install is less invasive overall as well. With Whipple, you have to go through HP Tuners and get ecm unlocked, and then upload the Whipple yourself. Part of that process is more involved. Security/immobility relearn requiring a gm dealer (mdi2) tool. All that being said, since both are good options, I'm stuck at a crossroads... pondering...