X Pipe
 

Does anyone have experience with adding an X-pipe to a 4.6iS? I'd like to add one to compliment the Dinan mufflers. If so, what size X-pipe do I need? 2.25 or 2.5?

This dude did 2.5" with a 4.8.


https://www.youtube.com/watch?v=EwhUHoQHBxE


Same for this dude


https://www.youtube.com/watch?v=hk2k8dIRDcA

There is nothing I have ever found that has determined what choice of size pipe or what location is best for a 4.6. I have a 4.6 with Dinan exhaust. Rather than an X or H pipe I elected to go with electric cutouts that can opened as much or little as I would like. I didn't want to risk creating a drone that could result from either choice of pipe or from the location of the install. My goal was maximum increase in performance rather than changing the sound of the Dinan exhaust. If your goal is changing the sound note that sound change from adding an X pipe is different than an H pipe.

https://www.youtube.com/watch?v=Dd43rwLHEW4

https://www.bumberas.com/blog/2018/6...h-pipe-exhaust

Thoughts on putting an exhaust in place of the resonator and having pipe extended to the rear?Sent from my SM-N975U using Xoutpost.com mobile app

There are clips on Youtube to hear the results of exhaust modifications. Several members have modified their exhaust but I don't recall anyone modifying Dinan Exhaust other than what I did. Dinan exhaust was engineered and tested to improve performance and engine efficiency. My recommendation is not to mess with it. And, again the risk of exhaust modification is creating a drone that is miserable to deal with.

I have a Straight Pipe on my M62B44TU (4.4 V8) - exept the Cats" are in place.

& this is how this ridiculousness sounds to the neighbours every morning in summer

https://www.instagram.com/p/CG98lSnH..._web_copy_link

Just dont blast it on your speakers ---SCARY---

In winter its much more quiet due to the cold air

Not sure if this helps, but this dude has 4.4i with 4.6is exhaust system and used 2.5.


https://www.youtube.com/watch?v=TW6G...vkh9J04ahICrO_

I think a certain sound is appropriate for certain vehicles. I removed my resonator on my 4.4. But this is beyond comfortable. Good luck...

To be honest not really, Once the pipes warmed up and the engine is at running temperature it starts to Scream and rumble after 3500RPMs.

Plus this was a start up on the 86 (low octane) Fuel, always louder due to slight increase of detonation. 91 or 94 Sounds significantly quieter

Here's mine. Not an ideal setup (I'm sure it costs HP)... but it sounds good, which was all I was going for. I never close the cutouts and it is not too loud, no drone at any RPM using the Dinan mufflers.

Attachment 79632

I think I am going to change out the stock resonator for an Xpipe and then have the cutouts as a dump like bcredliner. I HATE not having my exhaust come out of some sort of tip, but I would like a bit more volume at times so having the cutouts after the X-pipe as dumps would accomplish that. And maybe then I'd actually use the cutouts every now and then.

Here's what it sounds like currently:

X5 exhausts

The grey 4.4 N62 is running Corsa mufflers.

Dinan exhaust w/ cutouts

I have long since fixed the exhaust leak shown in the video.