Gorske

I've always launched min in 4hi and switched to 2wd just before the 1-2 shift. I try not to do that many hard launched anymore running a ProCharger and I don't want to push it. Here is my launch video I made and my most current run. The top end run I waited till 2nd to which out due to traction issues in 4wd.

Black Rhino Mozambique wheels. https://www.blackrhinowheels.com/truck-wheels-truck-rims-mozambique.php

Black Widow 250 3" in/out muffler into a Corsa 3" in duel 4" out tip with the stock manifolds and a 3rd cat delete. Has a ProCharger P1SC.

There should be a yellow flex fuel sticker on the inside of the gas door or a transparent flex fuel sticker on the lower right corner of the drivers door window as well. 2017+ flex fuel 5.3s seem to be pretty rare where I am. I got a non flex fuel truck and just did the flex fuel mod.

Yeah the tune is the major role there. My buddy Zak with Klug Performance recently tuned a 2015 Stingray. That car with 93 octane and the stock tune was seeing 9 degrees of knock at 15-17 degrees of time at WOT. When he was done with the tune same fuel that was in the tank he bumped it up to 19-21 degrees of timing with zero knock at WOT. Which is crazy to think that 9 degrees of knock is considered "ok" by GM for the car to be like that. I know when we tuned both my 4.3 and 5.3 trucks for e85 the stock e85 tables were not that great. The e85 tables still made both trucks feel quicker but when properly tuned for the e85 it was a big difference. My 17 5.3 best time on 93 with a great tune was 14.41 in the 1/4 mile. Same truck with Zak's e85 tune with 72% ethanol ran a 13.96 in the 1/4 mile. 4 tenths with just a fuel change and tuning adjustment is huge for a NA motor. I have not personally seen what gain the 6.2 tuned for 93 versus a 6.2 tuned for e85 but I would think it would be equal to if not better results being the 6.2 is a high compression than the 5.3 Maybe someday I will upgrade to a 6.2 truck and test it out. Here is a link to the post on the Stingray tune. https://www.facebook.com/Klug-Performance-1563100830623160/

You don't want to look just at the octane rating with it comes to comparing 91-93 versus e85(65%-85%). How the ethanol burns is another reason why you see those performance gains. Ethanol is a cooler burning fuel so when it is compressed and ignited in the cylinders that cooler denser fuel creates a more intense explosion which then creates more power just like how your HP/TQ changes on cooler days versus warmer days. That is why you see the gains you do with e85 or an e85 mix on these higher compression direct injection motors and boosted applications.

Sorry was not aimed towards your post. More of a in general to past threads about e85 on NA vehicles. Also just a nice video to show what kind of gains you can see on e85 when properly tuned with a sensor. Plus I think it's a pretty sweet build

Here comes that e85 debate that happens every time someone mentions running e85.... There are thousands of NA 6.2 Camaros, Corvettes and Trucks running e85 with shown gains. As long as you have a good e85 tune and a sensor so the pcm can adjust the fueling for the different blends you are just fine running e85 in the 4.3, 5.3, and 6.2 Miata 6.2 swap NA running e85 and showing dyno results when running e85.

https://www.montmotorsports.com/dsx-flex-fuel-kit-2016-v3-cts-v/ https://www.montmotorsports.com/contact-us/ They don't have the kits on their website but call them and they sell the flex fuel kits for the 2014+ 6.2 trucks. They are 299.99.

Could you use the same kit you got for your SS on your truck or is that only for the Camaro and not universal for the 6.2? I got the OEM 5.3 kit for my truck.

I wanted to go with a 275/65 when I first got the Falkens but I was told they would rub with the stock suspension. Of course after I got the Falkens last fall I found a post on here where someone was running 275/65/18 with their stock Z71 suspension and not having any issues. Long story short the Coopers I got were on sale, along with my normal discount I get, and I got a trade in credit for the Falkens so for the low price of 300 dollars I got 4 brand new 275/65/18 Cooper Discoverer ATPs. I didn't need new tires but everything panned out to get a good deal and the Falkens were wearing down fast due to the recent trips to the track to get time slips for the mods I've done to the truck so not the tires fault lol.

Switched out the Falken Wildpeak AT3 265/65/18R for Cooper Discoverer ATP 275/65/18. I like them better so far. Next test is how they launch. First pic is the Falkens and second is the Coopers.

Yeah I kept it in the stock location at first closer to the back tire than the rear bumper, and where the Corsa on the tips can be slightly seen. Comes down to your preference and what you like though.

My Black Widow 250 muffler has 10k miles on it now and with the side exit before the rear tire I thought I'd make an updated cold start video.

CAI wise your only option for the 4.3 currently is the K&N and I tested the K&N and showed it does increase some power but slows the truck down. Exhaust wise a cat-back does not increase performance just gives you a different sound. Now headers would change the performance of the 4.3 but I do not know of anyone who currently makes headers for the current gen 4.3 Here is my post and test of the K&N CAI.

I would agree about the cold air intake and exhaust mods about not really adding power. However a tune is worth its weight in gold. I had a 2015 Silverado Double Cab 4x4 4.3 and with a e85 tune it went from the stock 285hp and 305tq to 320hp and 350tq to the crank with just an e85 tune. Stock it ran 16.19 in the 1/4 mile and with that tune alone it ran a 15.14. Those 4.3s run amazing with a tune. I'll link my 15.19 time slip below. Message Klug Performance on Facebook and he can get you more information about a tune. http://www.dragtimes.com/Chevrolet-CK1500-Truck-Timeslip-27884.html

I do not but I can get some for you.

center/center

No other mods. Stock manifolds, 2 cats, stock y-pipe, third cat delete, 3" pipe from the flex pipe flange to the muffler, and 3" pipe to the exhaust tip. Only other thing I can think of that might change the engine/exhaust sound would be that I am running e85 or the cam timing changes that were made to my tune. The idle video was from a cold start. Glad you like the sound lol. Also all my videos have been recorded with a Samsung Galaxy S8+ phone.

When I did the third cat delete the truck seemed to have a deeper tone to it for sure. Now when I went from the single exit to the duel exit it seemed it have a different tone as well. I'm very happy with my exhaust for sure. Love the Corsa sound but like you said hard to justify the cost. The Black Widow mufflers definitely have a good muscle car sound to them.

Yes at cruising speeds it isn't loud at all in the cab.