SPD Equal Length Resonator Delete (Gen3-like trombone) for Gen2s

[BoostCreep]

I mean, there’s no way deleting the resonator isn’t gonna result in a louder exhaust. The EL loop and crossover H pipe will surely change the tone, but it’s gonna get louder too. My main concern is in cabin drone around 2k rpms in stop and go driving.

 

[Nood1es]

I have the SPD downpipes, turbo adapters, and QTP cutouts - but the cutouts come with a mid pipe that deletes the same resonator and I have stock cat-back. With the cutouts closed, my truck sounds very similar to the truck on SPD’s site. If I could do it over again, I would buy this resonator delete opposed to the cut outs - they stay closed all of the time.

That’s what I have as well. I welded two resonators after the cutout to quiet it down some more n help with the drone(drone). Debating really hard whether I’m going to scrape the qtp for this.

 

[Oldfart]

I mean, there’s no way deleting the resonator isn’t gonna result in a louder exhaust. The EL loop and crossover H pipe will surely change the tone, but it’s gonna get louder too. My main concern is in cabin drone around 2k rpms in stop and go driving.

I am OK with a little louder, but I don't want it LOUD. I did that enough with my cars when I was younger. I even ran straight headers for a little while on a Plymouth 440 I had. It was great to get left lane hangers out of your way! What sounds awesome in short runs around town is not much fun on a 10 hour drive.

 

[Nex]

Must be my old ass thinking, but it seems the loop would increase back pressure. Thought you wanted the most free-flowing exhaust on for performance.

In to see how it is once installed.

 

[nikhsub1]

Must be my old ass thinking, but it seems the loop would increase back pressure. Thought you wanted the most free-flowing exhaust on for performance.

In to see how it is once installed.

would be negligible but remember, this is all about sound, nothing more.

 

[BoostCreep]

Dual 3” pipes will flow more than the Raptor’s small turbos would ever need, especially with only 1.75 liters of displacement feeding each side. The loop is definitely a flow restriction, but will likely make no difference.

 

[RussellG]

the video from SPD is with the stainless downpipes (which I have). They make the exhaust significantly louder than with the OEM cats. My Ford Performance Sport exhaust was pretty mild with the OEM cats, once I put the stainless SPD it is much more, umm... vocal. Here is a vid I took today from inside the cabin entering the freeway. About 3/4 throttle. Both front windows down.

Wow, I have the non-stainless version of SPD downpipes and mine is definitely not that loud.

 

[RussellG]

Is the rest of your exhaust stock? How much do downpipes increase the volume by themselves?

It increased sound a little bit. I wouldnt say significant, but noticeable. Someone posted a video of the stainless downpipes from SPD and my non-stainless SPD downpipes are definitely not as loud. I do also have turbo adapters just like the guy with stainless downpipes.

 

[Nex]

Dual 3” pipes will flow more than the Raptor’s small turbos would ever need, especially with only 1.75 liters of displacement feeding each side. The loop is definitely a flow restriction, but will likely make no difference.

Ok, so not something to go after if thinking bigger snails.

 

[BoostCreep]

Ok, so not something to go after if thinking bigger snails.

Even then I don’t think it’s an issue unless we’re talking 1,000+ whp.