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02-18-2014, 05:04 AM | #1 |
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335i ar-design downpipes on e89
Hi guys, do you know if 335i ar-design downpipes will fit correctly on e89 35i??? Or otherwise z4 has different catless downpipes than 335i??? Thank you!!!
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02-18-2014, 05:30 AM | #2 |
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They won't fit directly. I ordered the AR catted dp's to avoid rasp and drone. Only lose around 5whp. Every car I have heard on the net with the catless dp's sounds bad....too raspy for my liking.
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02-18-2014, 08:32 AM | #3 |
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Which exhaust did you go with? So, the AR DP's resulted in no in-cabin drone?
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2016 340i XDrive, EBII/black, 6 MT, M Sport, Track Handling, Cold Weather, Tech, Lighting, Driver Assistance Plus.
2012 Z4 35i, ED 2/24/2012, Melbourne Red Metallic, Black Leather, Carbon Trim, 6MT, M Sport, CW, PP, PS, NAV, CA. |
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02-18-2014, 01:33 PM | #4 |
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AR makes a Z4 specific design and they fit perfectly. Maybe you lose power without a tune but I cannot understand why you would install DP's without running a tune.
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02-19-2014, 02:44 AM | #5 |
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I haven't received the DP's yet. I plan on using the stock 35is exhaust which is already fairly loud and has a very nice note. With the catted AR dps I expect a slight increase in sound level but certainly nothing offensive to the ear. I am hoping to enhance the exoticness of the note and add some HP. I have an ESS tune.
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02-28-2014, 01:57 PM | #6 |
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will running the catless DP's throw a check engine light?
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2011 BMW Z4 35i | FBO | VTT Stg 2+ (EK, 20T clipped)| Motiv PI| Motiv Tuned | Fuel-IT Stg 2 + inline fuel pump | Spec Stg 3+ clutch | MFactory flywheel | 606whp 575Lbs |
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03-02-2014, 07:46 AM | #7 | |
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Drives: E89 Z4 35i
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03-03-2014, 07:25 PM | #8 |
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thanks. i assume you need to order with the O2 sensor hole so that the O2 sensor isnt just hanging around unattached?
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2011 BMW Z4 35i | FBO | VTT Stg 2+ (EK, 20T clipped)| Motiv PI| Motiv Tuned | Fuel-IT Stg 2 + inline fuel pump | Spec Stg 3+ clutch | MFactory flywheel | 606whp 575Lbs |
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03-04-2014, 01:24 AM | #9 |
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It's a personal choice but would just go with the catted ones. You get 90% of the gains with 0% of the hassles. I find that with an aftermarket exhaust the catless dps give a farty sound! Not good. Plus drone and a smell.
If you want the ultimate in sound with an aftermarket exhaust then go for catless midpipes and catted dp's. |
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03-04-2014, 04:08 AM | #10 |
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Agreed. I had a car without catalytic converters several years ago and it was a huge headache with LEOs. the sound and the smell were too obvious and it wasn't worth it.
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06-07-2018, 04:59 PM | #11 |
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"directly". How can they be made to fit?
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