[williamsmichael]

Initial driving impressions are that it is not loud at all. Don’t get me wrong, you can hear it a bit but it’s nothing like the K&N I had in my Jeep Wrangler (JK). Granted I only drove it for a few miles after the install with a rig full of people. I’ll stomp on it more tomorrow for further impressions. Therefore, no judgment yet on whether it’s worth the $300 price tag at this time.
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The 'extra part' vacuum cap is meant to attach to the heat shield where it hangs over the battery in the large hole. I think it's just so the heat shield can rest on the battery more snuggly without causing vibrations.

You'll hear it when vtec kicks in.

 

[williamsmichael]

LOL could hear the Vtec kick in!

Bwwwaaaaa

 

[williamsmichael]

Huh? You can definitely hear the AEM intake. Different sound in the cabin when you're on the throttle.

The engine sound may or may not be "generated" but one thing that's a disappointment for me is the complete lack of exhaust note. Some day that will be changed. Just don't have the courage to perform surgery on the OEM exhaust.

its crazy because the passport does have a much better exhaust sound than my ridge did with the aem. maybe i notice it more because im at higher elevation. you could have a muffler shop cut out your exhaust resonator and weld in a straight pipe. cheap to do, easy to undo, and maintains a clean stock look. you could get a high flow cat as well. im my experience full exhaust on a j35 sounds like poo.

 

[williamsmichael]

its crazy because the passport does have a much better exhaust sound than my ridge did with the aem. maybe i notice it more because im at higher elevation. you could have a muffler shop cut out your exhaust resonator and weld in a straight pipe. cheap to do, easy to undo, and maintains a clean stock look. you could get a high flow cat as well. im my experience full exhaust on a j35 sounds like poo.

a good muffler should could remove the resonator at the flanges and fab a straight pipe with flanges as well.

 

[williamsmichael]

a good muffler should could remove the resonator at the flanges and fab a straight pipe with flanges as well.

another reason your exhaust tone is unsatisfying could be that vtec is only on the intake valves on the J35. it will never exhale as loud as inhales.

 

[williamsmichael]

Well here is supposed to be the diagram for the 2019 Honda Passport exhaust (wasn't around a month ago):

https://www.hondapartsnow.com/parts...dr-elite-awd-ka-9at/exhaust-pipe-muffler.html

So it seems there is a bit of a "muffler" from the axle back that could possibly be modified. I'm referring to #12 and #13 in the picture. If anything get those cans removed and see how it sounds. Not sure I'd want to straight pipe #11 as that'd be right under the cabin -- concerned about drone.

interesting. yeah 11 is the muffler. i guess the thing before it is also. im skeptical straight piping 12-13 would give you what you want. those look like the kind of resonators that enhance the exhaust note. probably why the passport has the low rpm growl its brethren lack. would be cool to see a sport muffler to replace 11 and the muffler in front of it. magnaflow and others make universal ones you could swap in. just match the stock flanges, get a flex pipe or two, and have a custom bolt on fabbed up. probably need to get an exhaust hangar fabbed too if you want both sections done. i honestly wouldnt worry about drone. these cars have a lot of sound insulation. but, a full turbo back on a wrx wagon never bothered me either. that theres some drone.

 

[williamsmichael]

interesting. yeah 11 is the muffler. i guess the thing before it is also. im skeptical straight piping 12-13 would give you what you want. those look like the kind of resonators that enhance the exhaust note. probably why the passport has the low rpm growl its brethren lack. would be cool to see a sport muffler to replace 11 and the muffler in front of it. magnaflow and others make universal ones you could swap in. just match the stock flanges, get a flex pipe or two, and have a custom bolt on fabbed up. probably need to get an exhaust hangar fabbed too if you want both sections done. i honestly wouldnt worry about drone. these cars have a lot of sound insulation. but, a full turbo back on a wrx wagon never bothered me either. that theres some drone.

i like the idea of keeping the stock tips but adding more sound too. trying to figure out the diameter if those pipes to find you a muffler.

 

[williamsmichael]

i like the idea of keeping the stock tips but adding more sound too. trying to figure out the diameter if those pipes to find you a muffler.

looks like pilots have identical exhaust up to the point where it splits the exhaust in two.

 

[williamsmichael]

looks like pilots have identical exhaust up to the point where it splits the exhaust in two.

a high flow cat could be cool too. i dont see a sensor going into the stock one so that could be a straightforward swap too.

 

[williamsmichael]

I’d match one of these to the front mufflers dimensions and pipe the rest. https://www.magnaflow.com/collections/performance-muffler

 

[williamsmichael]

Do you know if it's the same as the Ridgeline? Magnaflow's system might be a swap (the center section (#11). Interesting design. Much smaller flow through (second muffler) in the MF system.



https://www.magnaflow.com/products/19364-performance-exhaust-street-series?aces=6147722

it does look like all pilot/ridgeline/passport exhausts have identical designs up until the rear axle section. however, the ridgeline has a longer wheelbase so that could be an issue. i would thus not recommend that ridgeline exhaust for your passport. even if it does all lineup youd have issues with the exhaust tip and the rear bumper.

 

[williamsmichael]

it does look like all pilot/ridgeline/passport exhausts have identical designs up until the rear axle section. however, the ridgeline has a longer wheelbase so that could be an issue. i would thus not recommend that ridgeline exhaust for your passport. even if it does all lineup youd have issues with the exhaust tip and the rear bumper.

the right muffler shop could make it fit, though. theyd probably have to shorten it, which is easy, and could also easily bend the rear section to align with one of the passports bumper cutouts OR fit it to the stock axle back section.

i take back my last post. it wouldnt be bolt on. but if youve got the cash, a muffler shop could make it fit fairly easily.

 

[williamsmichael]

@swenpaylay -- thanks. Probably cheaper to have a shop cut the OEM mufflers from #11 and add different mufflers in their place.

definitely would

 

[williamsmichael]

definitely would

First 300bhp butt dyno tested passport! Let’s see it! I’ve read on other forums the J35 puts out more hp than advertised at the crank.