dram1983361

The drivetrain is covered to 100k miles on the Duramax's

There are still no real tuning solutions for these engines and since this is the case, no way to do a def delete yet. You've got a long way to go before your warranty is up!

Found some info for this over on the HPtuners forum in case anyone else might need this. E90 ecm vats relearn

Question for those that have gone the HPTuners route for tuning, when you put the modified ECM back into the truck, did y'all have to go to a dealer for the Vehicle anti theft system relean or is there a way to do this without a dealer trip? Maybe a tool/scanner that can talk to the vats module? Thanks in advance.

HPTuners can do what he wants

What's the width of the stock 275/50/22 tires? Like 11", 11.5" maybe? Then compare it to 12" wide 305s, take half the difference between the two ( that added to each side of the stock tire) and see if you have that much room available on the inside if you were to go with the wider tire. Basically turn your current wheels lock to lock and see if how much clearance you have on the inside near the upper control arms. This will give you a better idea if you have enough room. I can tell you with my setup I have no rubbing at all, but again I'm on 9.5" wide wheels with a +26 offset. One thing to keep in mind, not all 305/45/22 are the same( some are wider than others, some run narrower than others), So be sure to check the specs on what ever tire you decide to run if you do change sizes.

305/45/22 will fit on 22x9" wheels, Ive been there, done that. Now if they will fit and not rub on the upper control arms on stock wheels on T1 trucks, I cannot say if it will work of not. I currently run that size tire on my 22x9.5" aftermarket wheels with a +26 offset

SOLD!

Bump, still for sale. Im not as active on here latley but I still check in every few days

Not for the 4.3 https://www.hptuners.com/vehicles/

That won't do much if any for sound or power. Just some nice looking exhaust tips for those that have or want split exit rear exhaust. I went to 4" exhaust after the cat and dumped it after the axle with a 6" tip. That bearly made any difference in sound(mostly while in Regen) and no noticable feel in power increase. Until there is some real tuning solutions which might never come thanks to the EPA, you can forget about exhaust mods (deletes) that will make any real power gains. You're going to be limited to a couple different intakes and a couple different fuel pressure modules.

I was going to and got all the stuff to do it, but ended up going back to the 6.2l before getting around to it. During my time with the 3.0L I found traces of oil in the charge pipe/resonator after the turbo. The pcv system goes from the valve cover to the turbo itself.

Intakes and inline fuel pressure modules is about all you're gona find. There's other threads on here that discuss these. And both of those will give you a bump in power and throttle response. Exhaust won't make any difference since its straight pipe after the cat.

What model/trim do you have? I ask because I went with lasfit on my 2020 elevation and I replaced the license plate and reverse lights with no issue, but when I did the front and rear blinkers, I had hyper flash even though the lights were advertised as being hyper flash free. Wasn't the case and I had to figure out a solution. (WAMS to the rescue there) Then I traded into a 2021 RST and used the same lights on this truck, minus the rear blinker bulbs and had no hyper flash from the bulbs. The stock rear blinkers are LED already on the RST. Just something to be aware of.