08-29-2013, 08:58 PM | #177 | |
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Now I've never actually been around a car with a catless DP, but I've heard so many mixed reviews about the smell. Some say it's terrible, others say it's not bad and you only notice it if you're idling and outside the car. I just wonder if either makes a difference to BMW in the event of a warranty claim and how much performance one would give up with HFC over full catless with a tune. |
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08-30-2013, 08:03 AM | #178 | |
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My thought process is that if I'm gonna do it, might as well go all the way with catless. I'd expect the smell and soot to increase marginally but it's not that big of a deal. It's only noticeable when your parked idling or at startup. I don't think there will be a difference in bmws mind if there's a warranty issue.
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08-30-2013, 09:59 AM | #179 | |
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I'm on the fence, if there is no real difference (both will probably fail emissions) and the code is auto clearable by a tune (which I already have) then why not go catless. My concern was like you mainly the smell. I haven't really thought of the soot build up and haven't really heard that as an issue. I know our cars will build up soot in stock form. Having black tail pipes helps, but I know it's there as I clean them when I clean my car and there is always some build up, but I've never seen it on my bumper (red car though). Wish I could find someone with catless just to see if the smell is tolerable and perhaps compare to catted, but not a big BMW performance market around where I live, mostly american unfortunately. |
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08-30-2013, 06:57 PM | #180 | |
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M-PPK and Challenge DP installed:
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08-30-2013, 08:51 PM | #181 |
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Sweet...
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09-08-2013, 01:02 PM | #183 |
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dear all ... i am looking for original DP for 335i f30 -2012 ..due to warranty reasons.. anyone who is interested to sell your original DP please contact me .. thank you
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09-08-2013, 01:04 PM | #184 |
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looking for original DP for 335i f30 -2012 ..due to warranty reasons.. anyone who is interested to sell your original DP please contact me .. thank you
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09-09-2013, 01:55 PM | #186 |
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Which DP? Catless or catted?
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09-09-2013, 01:58 PM | #187 |
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Catted - HFC. (I'll update my sig to more clearly state that).
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09-09-2013, 02:43 PM | #188 |
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09-09-2013, 02:59 PM | #189 |
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That actually sounds really good. How is the noise in the cabin when cruising or accelerating lightly from stop? I have the Borla Stype w/ hfc dp and it sounds amazing but is also loud when accelerating slowly from stock.. I was considering the mpe.
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09-10-2013, 12:12 AM | #192 |
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Any other videos out there with stock exhaust and hfc dp, looking to do this set up soon, thanks.
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Last edited by M.Suka; 09-10-2013 at 12:18 AM.. |
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09-10-2013, 12:21 AM | #193 |
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Wow that sounds great, I have to pull the trigger on this!
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09-10-2013, 10:45 AM | #194 |
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09-11-2013, 12:07 PM | #195 | |
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There's a slight vibration I can feel under throttle and it's def louder during an initial cold start - that's actually probably the biggest diff is the sound level at a cold start. I've got more vid I can share. It's for the same trip before, so it's a 'hot' start but I'll try and splice up and share sometime.
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09-12-2013, 01:17 AM | #196 |
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I read on someone's build thread that you cant re-use the 2 mounting bolts from the stock down pipe, do you know if challenge provide's you with those 2 bolts and if not does anyone know the size, thanks.
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09-12-2013, 10:56 AM | #198 |
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Yes that sounds right if I remember correctly.... Also a good trick is to super glue the nut on to the DP before installing. It'll make more sense when you're actually doing the install.
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