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BMW 3-Series (E90 E92) Forum > E90 / E92 / E93 3-series Powertrain and Drivetrain Discussions > N54 Turbo Engine / Drivetrain / Exhaust Modifications - 335i > Anyone here with HPF Gen II and catless downpipes?



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      07-19-2012, 10:53 AM   #67
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well inside the car its really not that bad except from 2500-2900 rpms...and with catted dps its again not bad at all, but i wanna keep my catless setup.
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      07-19-2012, 02:34 PM   #68
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Originally Posted by benzy89 View Post
That is the WORST. Sounds great for EVERYONE outside the car, but everybody riding in the car needs earplugs.

I've just come to the conclusion that with the turbo 6-cylinders there will never be a GOOD sound to the exhaust. It'll always be a somewhat muted, bass filed tone + if you try to improve it by adding an exhaust, you'll just get TONS of drone inside & drive yourself batshit crazy.

The new M5/M6 doesn't sound bad, but it's the V8 that makes the difference. Sadly it'll never live up to the sound of the S85
Not even a joke, I had earplugs in the center console for the highway haha.
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      07-19-2012, 04:11 PM   #69
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Originally Posted by Bakeme521 View Post
Not even a joke, I had earplugs in the center console for the highway haha.
thats funny though i just avoid the 2500-2900 rpm range as that is the only time it actually droned.
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      07-19-2012, 06:30 PM   #70
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i just got downpipes installed, and love the sound.. definitely got louder.

but i want more ... is the change from stock to catless downpipes just as big as the change from catless downpipes to fully catless (HPF)?
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      07-21-2012, 01:25 AM   #71
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Originally Posted by jetblackcoupe View Post
i just got downpipes installed, and love the sound.. definitely got louder.

but i want more ... is the change from stock to catless downpipes just as big as the change from catless downpipes to fully catless (HPF)?
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      07-23-2012, 03:05 PM   #72
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      07-24-2012, 07:23 PM   #73
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http://www.youtube.com/watch?feature...&v=ydWbbtKhlVk

there is the youtube video of it on my car...which i am selling now or willing to trade with ae

hpf exhaust is just a bit too loud for my taste, but some others that have heard mine says its not that loud...however i do a lot of highway driving and dont want it to be that loud cruising.
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      07-24-2012, 08:40 PM   #74
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Quote:
Originally Posted by cleex024
http://www.youtube.com/watch?feature...&v=ydWbbtKhlVk

there is the youtube video of it on my car...which i am selling now or willing to trade with ae

hpf exhaust is just a bit too loud for my taste, but some others that have heard mine says its not that loud...however i do a lot of highway driving and dont want it to be that loud cruising.
thanks for the post... I have stock exhaust with catless dp's and I get rasp around 5-6k when I floor it, but I hear zero rasp on your video. is that the case? the resonator does that much for it?
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      07-29-2012, 05:22 PM   #75
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      07-29-2012, 05:38 PM   #76
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Originally Posted by jetblackcoupe View Post
thanks for the post... I have stock exhaust with catless dp's and I get rasp around 5-6k when I floor it, but I hear zero rasp on your video. is that the case? the resonator does that much for it?
i guess it does....there is 0 rasp in this system. i have vrsf catless dps
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      07-29-2012, 06:26 PM   #77
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Quote:
Originally Posted by cleex024
Quote:
Originally Posted by jetblackcoupe View Post
thanks for the post... I have stock exhaust with catless dp's and I get rasp around 5-6k when I floor it, but I hear zero rasp on your video. is that the case? the resonator does that much for it?
i guess it does....there is 0 rasp in this system. i have vrsf catless dps
that's amazing .. even though the first owner (guy in HPF video) said it's very raspy lol... did you ever have just catless downpipes with the stock exhaust?
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      07-31-2012, 07:02 PM   #78
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      07-31-2012, 07:33 PM   #79
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Originally Posted by jetblackcoupe View Post
that's amazing .. even though the first owner (guy in HPF video) said it's very raspy lol... did you ever have just catless downpipes with the stock exhaust?
yeah i did...before i had this i was catless dps and stock exhaust and that was slightly raspy when going full throttle...but it all depended on the day i guess because sometimes it did get so raspy that it almost reminded me of my e46 m3.

but caatless dps and this hpf exhaust there really is no rasp...kinda weird that the other guy said there was so much rasp...maybe he has a different definition of rasp. my idea of rasp is the e46 m3...that was super super raspy.
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      07-31-2012, 07:42 PM   #80
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Originally Posted by cleex024 View Post
yeah i did...before i had this i was catless dps and stock exhaust and that was slightly raspy when going full throttle...but it all depended on the day i guess because sometimes it did get so raspy that it almost reminded me of my e46 m3.

but caatless dps and this hpf exhaust there really is no rasp...kinda weird that the other guy said there was so much rasp...maybe he has a different definition of rasp. my idea of rasp is the e46 m3...that was super super raspy.
so it gets a lot louder and eliminates rasp? sounds like a dream come true
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      07-31-2012, 08:05 PM   #81
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Originally Posted by jetblackcoupe View Post
so it gets a lot louder and eliminates rasp? sounds like a dream come true
yeah the sound is truly incredible, but only downside is some drone at 2500-2900 rpms which really isnt bad if you drive through the city but gets annoying when cruising at 70-80 mph in 6th gear.

if you could avoid cruising at those rpms then this is truly the best exhaust out there...the sound is so deep...everyone rubber necks when i drive by =). also this exhaust is not stupid loud either which is why i really like the sound of it...not ricey at all but loud enough to get someones attention
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      07-31-2012, 08:06 PM   #82
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but i do a lot of highway driving traveling anywhere from 300-400 mile trips almost every week so you can only imagine why im trying to sell this exhaust to get something a little quieter...but i dont want stock...i still do want something a little louder like ae.
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      09-23-2012, 11:24 AM   #83
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      09-26-2012, 07:01 PM   #84
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      09-27-2012, 10:56 AM   #85
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I have a similar setup...except I have Ar Catless downpipes, Vibrant resonators in place of secondary cats, and 3" alluminum piping from the resonators.

Sounds AMAZING! and no rasp and barely any drone. I don't have drone when cruising in 6th gear or anything. I only get very slight drone when doing an initial acceleration but only lasts like half a second lol. Its wicked! Mine is loud though, loud enough to turn every head on a street when i romp on it but its not loud if i drive like a grandmother lol.

Oh and above 4500rpm it sounds like a race car
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      09-27-2012, 11:32 AM   #86
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Quote:
Originally Posted by triggz
I have a similar setup...except I have Ar Catless downpipes, Vibrant resonators in place of secondary cats, and 3" alluminum piping from the resonators.

Sounds AMAZING! and no rasp and barely any drone. I don't have drone when cruising in 6th gear or anything. I only get very slight drone when doing an initial acceleration but only lasts like half a second lol. Its wicked! Mine is loud though, loud enough to turn every head on a street when i romp on it but its not loud if i drive like a grandmother lol.

Oh and above 4500rpm it sounds like a race car
Thanks for the input

I have cp-e catless dp's right now and everything else stock.. I get rasp around 5-7k which I don't like... And I want something louder.. Looks like this is it apparently (HPF)
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      09-29-2012, 09:32 AM   #87
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I have my hpf gen 2 exhaust and ar catless pipes sitting in my garage waiting to be Installed. I have no idea what I'm waiting for but it's good to see positive feedback about the setup! Thanks man.
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      09-29-2012, 09:42 AM   #88
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I have my hpf gen 2 exhaust and ar catless pipes sitting in my garage waiting to be Installed. I have no idea what I'm waiting for but it's good to see positive feedback about the setup! Thanks man.
Definitely leave some feedback or videos after the install! I'm sure lots of people would benefit from it
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