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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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      06-26-2012, 10:29 AM   #45
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CP-E is also really high quality. performance difference between cp-e and ar will be nonexistent.. I'm planning on running cp-e catless downpipes with the HPF gen II, so if you get the downpipes on, put up some high quality videos of cold start and revs and acceleration to redline if you can!!!
How bout i meet you in the Bronx one weekend and you can see how it sounds up close without downpipes. I think its badass.
I'm sure it sounds amazing with stock downpipes I just want to hear it fully catless. if you end up getting downpipes, let me know

also, benzy, that's the non-resonator first gen HPF.. probably significantly louder than the one we're talking about
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      06-26-2012, 11:16 AM   #46
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was gonna say, in NJ catless DPs + that exhaust = insta-ticket

Seen way tooo many cars get tickets from local PD for their exhaust + "Noise Pollution" Civics 95% of the time, but also Camaros, Vettes, Mustangs, ///AMGs and even some ///Ms
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      06-26-2012, 03:00 PM   #47
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Think we've crossed the line from Awesome into Obnoxious

For a DD, that's prob gonna make your ears bleed with all the drone (highways ). The VRSF CBE sounds interesting, but I recently dumped their DPs after disappointment w/ the quality of materials.

If you're going to buy DPs, IMHO there's really only 3 companies you should consider: AR, cp-E & Macht Schnell. The AR's are basically the Cadillac in this segment, they cost the most but also have the best fit & use the highest quality of materials. Then cp-E & MS. IIRC, AR & cp-E are your only options for Xi owners.

hmm what made you decide that the VRSF quality was a dissappointment?
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      06-26-2012, 03:11 PM   #48
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hmm what made you decide that the VRSF quality was a dissappointment?
Chances are it was 75% my mind looking for an excuse to not like them. Every random once in a while I would get subframe/transmission rubbing (rare) & I'd hear the tinny vibrating noise at idle from the trans bolts + DPs vibrating. We couldn't figure out how this was happening because when the car was on a lift was plenty clearance. The performance was without a doubt significantly better & the exhaust note was great under WOT, but in the end, I think I just couldn't be happy with the VRSFs because I wanted used MS or ARs + couldn't find them.

I now have Akra DPs, they're 2.75" and there's tons of clearance. The nicest things about the design is that it's a single tube bent (no welded sections), Akra uses studs instead of bolts (midpipe connection) & they mount into a bracket just like the OEM DPs (so they'll never shift around). I also think because the Akras are a little narrower, that boost builds up a little quicker & that the car is a little more responsive to throttle input.

This is just my experience & for all I know, I could've had the same problems with Macht Schnell, cp-E, AR or even SuperSprint downpipes. The mechanic who did my install is a BMW foreman, has a 1M w/ ARs and when he saw the VRSFs, he thought they were ARs (was confused b/c there was no badging). They went in easily & lined up, but my car just wasn't receptive. Surprisingly, he said that the Fabspeeds are the worst DPs he's ever installed & that they refused to go in smoothly.

Last edited by benzy89; 06-26-2012 at 03:24 PM.
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      06-29-2012, 08:44 AM   #49
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bump. no way only 2 people have this setup with videos
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      07-02-2012, 09:20 AM   #50
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yeah i would love to hear sound clips on this also.
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      07-07-2012, 11:02 PM   #51
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yeah i would love to hear sound clips on this also.


a lot of interest and apparently a lot of owners since the first shipment so let's get some vids up
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      07-08-2012, 08:27 AM   #52
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well i get mine on tuesday so ill try to get some up
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      07-08-2012, 08:50 AM   #53
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hey bro... I was looking for the same thing and i came across this video. Skip to 848 and watch it from there till the end. I believe this car has Catless dps from VRSF ..

http://www.youtube.com/watch?feature...&v=RXe40vcwzQE
i heard that one maybe 50 times but i'm not sure if there's bad civic-like rasp or not.. the owner of that car said that from 1 to 10 there was a level 8 rasp, even though it doesn't sound like that in the video.. so i want people with this setup to post better quality videos of the engine under load. it looks like the best option for a catless loud setup
Get some vibrant resonators to take away the rasp
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      07-08-2012, 08:55 AM   #54
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Get some vibrant resonators to take away the rasp
People shouldn't have to add something to an exhaust to make it sound pleasant. JMO
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      07-08-2012, 06:43 PM   #55
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Get some vibrant resonators to take away the rasp
People shouldn't have to add something to an exhaust to make it sound pleasant. JMO
+1 not paying a grand and a half to chop it up....
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      07-08-2012, 06:48 PM   #56
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lol...guys go watch the vid again...it already comes with resonators
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      07-08-2012, 06:53 PM   #57
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lol...guys go watch the vid again...it already comes with resonators
yeah but we just wanna know if that one resonator is enough to stop rasp when fully catless. that video doesn't sound clear enough to tell
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      07-08-2012, 06:53 PM   #58
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well again ill have mine on tuesday and hopefully ill have time to install and post vids =)
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      07-08-2012, 07:11 PM   #59
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well again ill have mine on tuesday and hopefully ill have time to install and post vids =)
sounds good!
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      07-12-2012, 09:23 AM   #60
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      07-12-2012, 09:53 AM   #61
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oh yeah sorry man...couldnt get vids yet but i will when my buddy comes down this weekend.

so as for now ill just explain whats going on...i have catless downpipes and just finished putting on the exhaust yesterday and heres the verdict

its awesome except for drone at 2500-2900 rpms and i cant take it...going through that section is fine but if you were cruising on the highway at like 75 in 6th, then the drone will kill your ears.

also the cause of this might be some vibrations too as i recently got an lsd installed and the vac diff cover...the exhaust touches both the diff cover and my camber link in the rear.

but overall the sound is very deep and gets a little higher pitched as you full throttle it...it sounds awesome and really no rasp at all. there are some kind of tinny noise as my exhaust is slightly touching both diff and rear camber link.

personally i thought i would never like an exhaust too much louder than stock but i actually do love the sound but still thought it was a tad bit loud for my taste...however my buddy who drives a supped up firebird he said he doesnt think my exhaust is loud enough and he absolutely loves the sound.

with that in mind i still might end up selling this and get a custom exhaust.

if anyone is interested let me know, price is at $1200 firm as i just got it and thats what i got it for...but cant sell it til this weekend as my buddy might buy it when he comes down but i would still like to have some deals if i do decide to sell it and he doesnt buy it.

whether i sell it or not the vids are coming.
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      07-12-2012, 08:10 PM   #62
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lol...guys go watch the vid again...it already comes with resonator
Fixed that for you. No muffler. Just a single resonator.
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      07-15-2012, 08:04 AM   #63
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bump
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      07-19-2012, 10:27 AM   #64
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bump
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      07-19-2012, 10:35 AM   #65
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Quote:
Originally Posted by benzy89 View Post
Think we've crossed the line from Awesome into Obnoxious

For a DD, that's prob gonna make your ears bleed with all the drone (highways ). The VRSF CBE sounds interesting, but I recently dumped their DPs after disappointment w/ the quality of materials.

If you're going to buy DPs, IMHO there's really only 3 companies you should consider: AR, cp-E & Macht Schnell. The AR's are basically the Cadillac in this segment, they cost the most but also have the best fit & use the highest quality of materials. Then cp-E & MS. IIRC, AR & cp-E are your only options for Xi owners.
That's my car and yes it made my ears bleed that's why it was on the car for 2 weeks. I have to say from outside the car it was far from obnoxious, it sounded so awesome. I wish it wasn't so loud inside the car or else I would've kept it.
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      07-19-2012, 10:39 AM   #66
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That's my car and yes it made my ears bleed that's why it was on the car for 2 weeks. I have to say from outside the car it was far from obnoxious, it sounded so awesome. I wish it wasn't so loud inside the car or else I would've kept it.
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
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