Lamarsh
Senior Member
- Joined
- Mar 12, 2015
- Posts
- 205
- Reaction score
- 86
- Location
- Detroit
- Ram Year
- 2020 1500 Rebel
- Engine
- 5.7L Hemi
I'm almost out of warranty, and am considering removing my exhaust manifold and upgrading to shorty headers. I just have a few questions about the (not necessarily bad) can of worms it could open.
First, I was wondering if anybody has any experience or input as to how shorty headers would perform with my stock exhaust (5.7L), vs. an upgraded aftermarket cat back system. If I run shorty headers, how important would it be to upgrade the exhaust?
On top of that, what benefit would a CAI add to these upgrades? I had one 3 Rams ago on a 2008, and I thought that was a meaningful upgrade because the intake on that truck was really closed in and did not suck much air from the front of the truck. The intake on these new Rams seem to already be a pretty decent CAI system. Doesn't seem very worth it, but figured I'd get your thoughts. If you think there's benefit to it, I'm curious what it is. Will a CAI make any big difference with shorty headers and an aftermarket cat back exhaust?
Last, with upgrades like this in mind (shorty headers, cat back exhaust, and maybe a CAI), I'm wondering how much benefit I'd get from a tuner chip. Does the new exhaust system and headers require any tuning, or will the truck's existing system work out the changes? I had a Flashpac chip and CAI on my 08, and I did notice a difference in MPG and perceived HP gains. It wasn't a lot, but it was noticeable. But I have no clue how it would work on this 2020, and frankly I wonder how it would work with this truck's software being upgraded by over the air / satellite. How does that jibe with a tune? Going to eventually put 35" tires when these stock 33" wear out, so it'd be nice to be able to adjust the speedometer at a minimum.
First, I was wondering if anybody has any experience or input as to how shorty headers would perform with my stock exhaust (5.7L), vs. an upgraded aftermarket cat back system. If I run shorty headers, how important would it be to upgrade the exhaust?
On top of that, what benefit would a CAI add to these upgrades? I had one 3 Rams ago on a 2008, and I thought that was a meaningful upgrade because the intake on that truck was really closed in and did not suck much air from the front of the truck. The intake on these new Rams seem to already be a pretty decent CAI system. Doesn't seem very worth it, but figured I'd get your thoughts. If you think there's benefit to it, I'm curious what it is. Will a CAI make any big difference with shorty headers and an aftermarket cat back exhaust?
Last, with upgrades like this in mind (shorty headers, cat back exhaust, and maybe a CAI), I'm wondering how much benefit I'd get from a tuner chip. Does the new exhaust system and headers require any tuning, or will the truck's existing system work out the changes? I had a Flashpac chip and CAI on my 08, and I did notice a difference in MPG and perceived HP gains. It wasn't a lot, but it was noticeable. But I have no clue how it would work on this 2020, and frankly I wonder how it would work with this truck's software being upgraded by over the air / satellite. How does that jibe with a tune? Going to eventually put 35" tires when these stock 33" wear out, so it'd be nice to be able to adjust the speedometer at a minimum.