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Custom 3” Downpipes & Exhaust
- Thread starter Kruppa
- Start date
Thread Starter
#44
Honestly mostly to just be unique and experiment. Ideally an x is closer to the front but limited by the car setup and not wanting too sharp of an angle anywhere.
But X-pipes do help smooth the flow of air and clean up the sound and help scavenging effect for slightly more power.
X pipes also create a slightly higher pitch which I like for a v6. It’s not a deep glugging like a v8 muscle car. All just personal preference of course.
But X-pipes do help smooth the flow of air and clean up the sound and help scavenging effect for slightly more power.
X pipes also create a slightly higher pitch which I like for a v6. It’s not a deep glugging like a v8 muscle car. All just personal preference of course.
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Thread Starter
#51
Me and you both!! Obviously I wanted quite a bit of sound dampening with 2 resonators, a large mid muffler, and 2 rear mufflers as my intention is to have this be a daily driver and not be obnoxious/annoying for me to drive. Mainly I'm hoping for that difference in tone that sounds more like what I feel a V6 should sound like vs the ultra deep glugging typical of a v8 muscle car. We will see!
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Thread Starter
#53
Yeah we are going with the vibrant I think for that reason but still need to hear them. How large is your mid muffler? You have vibrant resonators?
I wish everyone with a custom set up could get together and we could all hear them in person, based on prior experience it’s impossible to compare clips online and everybody’s opinion of what is loud is so different. It could be based on tone vs drone etc. At the end of the day I am more concerned about the tone versus the volume however I do not want it overly loud
I wish everyone with a custom set up could get together and we could all hear them in person, based on prior experience it’s impossible to compare clips online and everybody’s opinion of what is loud is so different. It could be based on tone vs drone etc. At the end of the day I am more concerned about the tone versus the volume however I do not want it overly loud
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We’re virtually identical aside from your second x. SPD downpipes, Vibrant 1794 resonators, Magnaflow 12599 mid muffler and after I swap we’ll have the same Vibrant 1136’s...all 3” mandrel bent stainless. Mine sounds fantastic...I have no doubt yours will too. Very deep at idle and not loud at all. The only thing I’ve been fighting is the volume while driving. Having four 4” tips just outside the cabin doesn’t help but some sound treatments on the rear floor and hatch helped it a lot.
Thread Starter
#55
Awesome and yes I can’t wait to hear it. No idea what, if any, difference my custom catted downpipes vs SPD and the extra x pipe will have. I was planning on trying to put some sound deadening under the spare tire and maybe few other places in back. Do you think that’s worth it? My only other comparisons are relatively unfair as they’re more expensive vehicles but the explorer definitely has more road noise than I’m used to to start with.
Depends on the cell count in the converters you used. SPD uses a larger diameter 400 cell cat. If you used something like a 200 cell from GESI it may be a hair louder but I wouldn’t think too much. For the deadener I did full coverage CLD on the floor, tire well and hatch with Dynapad CCF/MLV in the same areas. It made a noticeable difference. I’m also in the middle of treating the entire cabin. I just got all 4 doors finished yesterday. Interior side panels are next.
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Thread Starter
#57
You’re going all out, I love it! My wife and I also have a X7 M50i and that thing is whisper quiet inside with absolutely zero squeaks rattles etc. I may mess around with some sound deadening on the explorer. Which model magnaflow do you have now for rears? The vibrants are bigger I assume since you’re trying them?
Thread Starter
#59
The vibrant muffler part is 5x9x15 and magnaflow is 5x8x18 so volume wise only about 7% difference. I’ve only heard MF vs Vibrant on the same platform once and they were similar - maybe Vibrant was slightly smoother but that was years ago and I’m sure the technology has improved. Your MF has also broken in so it will be hard to compare until you drive a bit. Your sounds clips from what I could tell sounded great and not loud at all - you could hear the engine plenty from outside but like you said perhaps the issue is just interior cabin noise.
Also just looked, my downpipes have G-Sport 300 CSPI (4” body, 7” overall)
Also just looked, my downpipes have G-Sport 300 CSPI (4” body, 7” overall)
The way Vibrant does their packing they claim they don’t burn in and have the sound change. Magnaflow definitely changes over the first 1000 miles or so. Mine got deeper and maybe a touch louder.
GESI makes your cats...I wouldn’t expect to notice any difference at all between a 300 and 400 cell cat with an exhaust this long.
GESI makes your cats...I wouldn’t expect to notice any difference at all between a 300 and 400 cell cat with an exhaust this long.
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