[Dbp_22SG]

Nice set up !,

 

[407guy]

Only update I have is to report some fuel economy numbers for a trip from the Orlando, FL area to Asheville, NC. We did two trips, one to drop our son off at camp and another to pick him up. The first trip was "normal" driving with cruise control set at 75ish most of the time. The second trip was entirely with ECON on. I will note a couple of things about the second trip with ECON: (1) we had about a 1.5 hour slow moving detour due to an accident on I-95 in Georgia and (2) after that delay I had the hammer down as we made it into Florida and the homestretch to Orlando. Prior to this setback on trip 2 we were closer to 26 mpg at that point.

Surprisingly over two trips of approximately 1,135 miles each, the ECON drive did better with fuel economy.

Trip 1: 1134 miles, average MPG = 24.7
Trip 2: 1135 miles, average MPG = 25.1

Overall impressed that we consistently beat the reported MPG by Honda on this rig.

Trip 1:

Trip 2:

 

[dvs1270]

This has been a read. Thank you, I'm ordering parts for my custom exhaust now. I'm going to browse over this thread again tonight.

 

[407guy]

A public service announcement (PSA) on how to get your Passport to sound like it has an AEM intake installed.

I had some maintenance service done this morning. One of the things that was noted on the paperwork was to change the OEM intake filter on or before the next service. I’ve been running the OEM intake system for some time now, had an AEM intake installed previously. As we were driving away from the dealership I was merging with traffic and gave the rig a good ‘ol foot stomp on the right side pedal. Right away the engine (intake) was much louder and I thought, “gee, that almost sounds like I have the AEM intake installed.”

We pulled over and I popped the hood. The service tech inadvertently did not latch down the intake box. (At least it confirmed he actually looked at the filter since you have to open it to see the filter condition.)

Anyway, if anyone wants to know what an AEM intake more-or-less sounds like, just unclip the latches for the OEM intake and take the rig for a spin. Make sure there’s a gap between the top and bottom pieces of the airbox.

CLOSED latches on OEM intake:

OPEN latches on OEM intake (note the gap between the bottom and top pieces of the box):

 

[fx_chip]

A public service announcement (PSA) on how to get your Passport to sound like it has an AEM intake installed.

I had some maintenance service done this morning. One of the things that was noted on the paperwork was to change the OEM intake filter on or before the next service. I’ve been running the OEM intake system for some time now, had an AEM intake installed previously. As we were driving away from the dealership I was merging with traffic and gave the rig a good ‘ol foot stomp on the right side pedal. Right away the engine (intake) was much louder and I thought, “gee, that almost sounds like I have the AEM intake installed.”

We pulled over and I popped the hood. The service tech inadvertently did not latch down the intake box. (At least it confirmed he actually looked at the filter since you have to open it to see the filter condition.)

Anyway, if anyone wants to know what an AEM intake more-or-less sounds like, just unclip the latches for the OEM intake and take the rig for a spin. Make sure there’s a gap between the top and bottom pieces of the airbox.

CLOSED latches on OEM intake:

OPEN latches on OEM intake (note the gap between the bottom and top pieces of the box):

Thanks for sharing. If I rotated my wheels on the same day I would check to ensure that the lug nuts are tightened.

 

[407guy]

Thanks for sharing. If I rotated my wheels on the same day I would check to ensure that the lug nuts are tightened.

And tire pressures.

 

[JLH]

Of course if you do this, be aware that you may get dirt in your intake, especially if driving on gravel roads or dirt roads...

 

[JGRyan]

I put in a K&N in my '19 Pport and the difference in sound wasn't that noticeable. What AEM do you recommend? BTW - I did leave the dealership once after a rotation and the lug nuts were only hand tightened (not good for obvious reasons) so I agree - make sure they are tight before you leave the service center! Luckily I got home before the damn things fell off and tightened 'em!

 

[407guy]

What AEM do you recommend?

AEM part 21-795C.

407guy's "build" -- 2019 Passport Elite...

Use a leaf blower and air dry the roof?

www.passportforums.com

 

[Carlheizer]

407guy: Great job on the discussion and analysis. To eliminate the drone, you need to have a quarter wave tuner aka J pipe aka Helmholtz resonator set up like good-win racing has made for the 19-20 RLs. The quarter wave tuner configured correctly cancels the note creating the drone (there is actually a good you-tube video on how it works). I came across the MF XMOD #14006 system that is customizable and includes such an adjustable drone killer. I am seriously considering giving it a try an then putting a the 5” res in the back. Right now I just put a straight pipe in place of the second resonator. Just a touch of drone but not offensive. Here is the write up on the XMOD:

What does everyone think about this? Has anyone used an XMOD System? TIA

 

[PNWGarageDad]

All those are exhaust manufacturers or exhaust component manufacturers. All have PDF catalogs available for download. If I were building this I would buy both front and rear gaskets then compare measurements from catalog to each gasket. For what you want (I think) sound-wise I would go with a Magnaflow multi-chamber front muffler and either a dual chamber rear or straight-thru. Depends how much resonance you want. You need back pressure (chambers) on the front to slow down the sound waves (and not kill your gas mileage). The dual rear will deepen and soften the sound out back while a straight thru will have more high frequency wave (think whaaa). I prefer growl to whaaa but chose what you want. Use stainless mufflers and pipe, flanges will be carbon which will rust, unless you can find SS somewhere

Excellent feedback! I'm itching to add some exhaust sound as well!

 

[PNWGarageDad]

Just went over this thread again on your exhaust setup and thank you again for all of the details! I will do this same exhaust system. If any drone pops up , I will do this to remove it

 

[407guy]

^ Thanks for the video re J-pipe. Interesting, very interesting. May have gone with the "beefier" sound with a J-pipe..

And I will add the kid's exhaust in the video sounds really good.

 

[Driv3r]

Goodwin racing has many Ridgeline videos with the J-pipe/ resonator installed on a dual exhaust setup, and a pretty clever clamp on tiny muffler that can replace a small section of the straight pipe for comfort on long trips. They said that it can be swapped in your driveway, to enjoy enjoy 2 modes (loud and not so loud). I reached out to ask about Passport compatibility of parts, but the response was that there was nothing available (what a shame). The heart of the system comes from Magnaflow, so there is hope for us. I think you guys are on to something good. I strongly recommend watching their videos to experience the sound on their youtube channel.