GS357 S

Anybody done mods to their stock Bose system that worked well. I would like more power, some better highs, and a sub.

Thanks to all. Going with the Pennzoil Platinum and Purolater filter. Changes at 5K Thanks for all the good information.

Checking on the TPMS relearn tool you mentioned. Yes, have 35's to rotate as well. Thanks!

Thoughts on best oil and filter for 2020 6.2? Dealer got oil on the engine and side of truck last time it was in for service. Thinking about just doing the services at home with a Dexos approved oil and good filter. I see the new Vette uses Mobil 1 now.

Thanks

This sounds like a great solution. Were the JL Audio a direct replacement speaker for the factory Bose? Did you lose some power assuming you went with a higher ohm speaker?

What is the ohm rating for the factory Bose speakers you replaced? Did you go back with 4 ohms?

Wow, you are very talented! This is an awesome setup.

Bose upgrades - what have you done? Just wondering what the option are for different speakers and some more power. Thanks

Its all in the adjustment of the tailpipe section and possible mid pipe as stated above I have the same exhaust with no rattles, and it is possibly the best sounding exhaust I have ever heard.

Anybody know who makes the fender flares for SCA Black Widow trucks? or where to get them from? Looking to get a painted set for a 2020 AT4 1500. Thanks

Thanks for posting this. Definitely appreciate this info and makes my decision to get one of the other CAI's much easier. Thanks!

I was considering the GM CAI only because of the reflash, thinking that it was doing something for performance. I have seen the Rotofab make some impressive HP gains on the G8 GXP and SS platform with the LS3. At a local Dyno Day, we swapped from stock box to Rotofab and and back, same day, same dyno, same temp, fuel, stock cal for both, etc. and it was impressive. Not saying it the best, but always stuck in my mind that it worked.

I called Phasetek the shop that did a lot of exhaust testing on these new trucks, and they seems to think that none of the systems had any drone in the cab. The Atak was the loudest and most noticeable all the time but very refined, next the S type was very noticeable at cold start, noticeable while accelerating and not really noticeable while cruising. Last the touring, was noticeable during cold start but not so much after that. The S seems to be the right mix for me, and I did want quiet while cruising and towing. I should have it on the truck in a few weeks and can post my opinion if anyone is interested.

2020 GMC 1500 6.2 GM CAI with the "recalibration" or the Rotofab with no tune adjustments?