Davis86t’s 2015 Sierra SLT Z71 6.2L

davis86t · May 17, 2021

Sold the old crusty 22s. That put $1k towards the cam swap. Back to OEM 20s. It drives and feels much better with 20s to be honest. I still want another set of 22s though...

At this point it is no longer my daily driver. I got a Chevy Volt because I'm driving a lot for work and it saves me money. So the truck gets to stay super clean and detailed 24/7 and stays inside. I take it out any chance I get when it's not rainy. So much easier to keep it clean that way.. any time I take it out it looks like it just came off the showroom floor.

langston1726 · December 31, 2021

Whats the part number on your Xr1? Got any more sound clips?

Edited December 31, 2021 by langston1726

davis86t · December 31, 2021

2 hours ago, langston1726 said:

Whats the part number on your Xr1? Got any more sound clips?

Part number 40575

1 7/8 long tubes to X and dual 3” pipes with two Borla 40575 dumped before the axle.

Here’s one that I think was a cold start if I remember correctly. I’ll get another driving one uploaded soon too.

langston1726 · January 1, 2022

9 hours ago, davis86t said:

Part number 40575

1 7/8 long tubes to X and dual 3” pipes with two Borla 40575 dumped before the axle.

Here’s one that I think was a cold start if I remember correctly. I’ll get another driving one uploaded soon too.

Sounds great I just ordered the 400372 multicore which is a 17” oval case, I believe yours are 21”. Hope it’s not too loud with my TSP headers. Sounds like these get pretty rowdy on some throttle. Any drone with these?

Currently running a 19” Borla ProXs. It sounds pretty good but looking for just a little bit more rasp.

Edited January 1, 2022 by langston1726

davis86t · January 14, 2022

Yes there is a bit of drone, mostly around 2K rpm depending on load, but it’s enjoyable for me, not bad at all. My wife doesn’t like it though. But she drives a Tesla so..

I personally hate too much rasp and it seems like with my setup I’m constantly feathering the throttle to reduce it. Unless It’s WOT — it screams like a drag car then, and it’s all worth it. Haha