Hello everyone,
I'm sure some eyes will roll and people might tear me a new one for this but here goes lol
I have a 2018 ram rebel 5.7
I'm just now learning about mods and I need some help when it comes to exhaust systems. Can someone please dumb it down a bit for me? I would like to switch things up in order to hear the roar of the v8.
I'm thinking ideally I would do a cat back system but I've also read that a cost friendly option could be as simple as changing out the muffler. I know that I can hear the sounds on youtube but i'm wondering what to look for when I shop for a muffler? What makes one better then others other then the way it sounds?
What size would I be looking for? 3 inch in and 2.5inch out? Where can I find the info for my truck?
Thank you to anyone who has the patience to read through this and wants to offer some help.
What you are looking for is something like the factory system on scat packs, with a baffle that automatically opens at start and when you floor it but closes a little while driving. There is no aftermarket system that does that outside of a manually operated cutout.
catback will give you more rumble for sure. I recommend the borla system. Costs a little more but sounds sweet. I put one on my 2006 Viper.
size wise, stick with what is on the system in front of the cats. You are not going to get anything, sound or power, putting bigger tubes behind the cats. Just money for nothing. 3" would be good for a 500hp beast. 2.5 is more than enough for a 5.7, even with a cam. But even if you decide on bigger, the only gains you will get are what you put in front of the cats from the manifolds. Dodge did not leave much of anything on the table. The aftermarket is only "different", not better.
About mods. The ONLY place a cold air intake gets more power is on a dyno with a shop fan blowing on the engine. The factory system pulls air from the fender well, not the engine compartment. A CAI pulls it from the heated engine compartment. Dodge put an air system on the truck that is capable of providing 100 percent of the engines needs under any operating condition even of the filter is dirty and partially restricted. Again, "different" not better.
Cams, headers. Tuning nightmare. You will end up logging and sending the results to HemiFeaver back and forth for months trying to get it fine tuned. Canned tunes will get it running but air temperature, exhaust, air fuel mixture all depend on your location and driving habits. Months. Canned tunes are only the begining. If you like driving your truck more than working on it, leave it alone.
Tunes. Everything affects the air/fuel mixture. There is no canned tune that will do anything but get the engine running at a base level. I do not care what they claim. It is a lie. I have tuned enough GM engines to tell you, it is a lie. And the most accessible place to get it done is HemiFever. Why? Because dodge changed their computers and tuning on cars a lot. Sometimes mid year. Even the dealer can not flash the correct tune back on your car unless they have the vin and it is 100 percent origonal. If you modify anything on the engine, even the dealer can not help you if you mess it up. You are screwed. And unless whoever is doing the tune has the correct software for your particular engine, off to HemiFever it goes and months of logging and flashing to get it right. And they have to guess because of temperature and your driving habits and whatever aftermarket parts you put on the car.
So, if you like driving your Ram, LEAVE IT ALONE. If it is a toy you want to play with in your spare time and have something else to drive, have at it. But make no mistake, it will stop being dependable transportation the moment you start messing with it. And consider this. The Dodge Demon. There is no way any aftermarket company is ever going to do as good of a job squeezing power out of a Hemi than Dodge. "Different" is not better. And most of the time ends up being stupid.