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      11-22-2019, 07:59 AM   #353
Petro135
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Love this thread. Read the whole thing.Thank you for the inspiration!!
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      12-28-2019, 02:25 PM   #354
chadillac2000
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Christmas 2019 was a good one. After entertaining a few offers on this car over the past month, and feeling very uneasy about letting it go, Iíve found a way to keep the 135i and upgrade to a newer, performance sedan sometime in 2020 without getting rid of something Iíve invested so much time and effort into. I knew Iíd regret it big time eventually.

The 1er also got a present -- a set of brand new Berk midpipes. For the past 100,000 miles Iíve been running a hacked up N54 midpipe with Vibrant 1790 resonators installed in place of the secondary cats and itís been great, but Iíve always eyeballed this purpose-built two-piece midpipe setup from Berk for some time now. Build quality looks top notch and came with new hardware and gaskets. It should sound great in between the ACF 3Ē downpipe and the MadDad Whisper. Should be installing these sometime in January.







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ACF PTE 6062 BB Top Mount ST Kit, Fuel-It! Stage 3 LPFP, Phoenix Racing Port Injection Manifold + RACE FMIC, JB4 + BMS ST E85 PI BEF
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      12-30-2019, 10:37 AM   #355
Petro135
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Do those make the car much louder? I've stuck with stock mids and axel back and only added catless dps because I'm not looking for anything too loud . But I think I'm at the point I want my car to breath better.
Nice pipes BTW!!
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      12-30-2019, 11:10 AM   #356
chadillac2000
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Quote:
Originally Posted by Petro135 View Post
Do those make the car much louder? I've stuck with stock mids and axel back and only added catless dps because I'm not looking for anything too loud . But I think I'm at the point I want my car to breath better.
Nice pipes BTW!!
I'm expecting a slight increase in volume, but not that much. The current setup has two Vibrant resonators and the larger stock resonator -- this one gets rid of the larger stock resonator, but does still have two smaller resonators that are similar to the size of the Vibrant ones.



I will say that catless DPs + catless mids + MadDad Whisper is a great combo. Not too loud at all during normal scenarios, but really comes alive under more performance oriented driving.
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      01-07-2020, 06:01 PM   #357
ianc
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Congrats on keeping the 1er Chad! Great news, and you def would have regretted selling it; I know.

ianc
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      01-08-2020, 11:50 AM   #358
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I'm happy to hear you're keeping it! Congrats. I am running the Berk Resonated Mids on my 2011 N55 and love them. I was running stock N55 mids before with the large resonator cut out, so basically a straight pipe. The Berk mids are refined, and eliminate drone. They sound great when you get on it! Looking forward to see how they sound on yours.
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      01-16-2020, 07:45 PM   #359
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I had the chance to spend some time with the 1er over this past weekend in order to install the new Berk midpipes I’d gotten recently, as well as take care of a few other maintenance items. I’d been getting some intermittent o2 sensor codes, which is common with single turbo setups, and since the downpipe has to be removed to access them, this would be a good time to swap those out with a new set of NTKs. The last set lasted almost 60,000 miles before they started triggering codes occasionally, so I stayed with the same brand. I also had some Redline D4 ATF and 75W90 gear oils on hand to flush out the fluids in the manual transmission and rear differential while the midpipe was out -- they were both due. Here’s a comparison pictures of my old midpipe and its shinier replacement.



After replacing the o2 sensors, which is a most unpleasant job given the extremely small amount of space to work with, I noticed how worn all of my top mount heat protection gear had become. I’d only had the turbo blanket on and off a handful of times over the nearly 60,000 miles I’d had this top mount setup, but the extreme heat had gotten the best of it. The v-band clamp attaching the downpipe to the hot side of the turbo was also destroyed during removal. The heat wrap on my downpipe was tattered and had come off in spots.



The next time I have my car torn down completely, I’ll probably take the time to have the hot parts ceramic coated and get rid of the exhaust wrap all together. Here’s a shot of the engine bay after the o2 sensors were replaced, the downpipe was reattached with a new 3 inch v-band clamp and a new Amazon turbo blanket. From what I’ve read, all the turbo blankets break down eventually, so might as well consider this something I’ll have to replace every few years. I prefer the darker color of this one, but it didn’t fit quite as snug as the one included with the ACF kit.





Installation of the Berk midpipes was pretty straightforward, but even with swivel sockets and extensions, getting all of the nuts and bolts tightens took patience. Berk included new hardware and gaskets, along with another exhaust hanger. Initially I did not install the exhaust hanger because I wasn’t sure what it was for, and experienced some rubbing. After some more research I discovered that the shorter exhaust hanger is actually for the axleback portion of the exhaust and it pulls the entire midpipe enough to avoid any vibrations from hitting the v-brace below it. Once that was corrected, everything fit nicely and wasn’t rubbing on anything. These pipes look great underneath the car mated up to the ACF downpipe and MadDad Whisper axleback.







First impressions are that volume is increased probably 20%, but still not too loud. Just perfect. The modified OEM midpipe I had been running had mellowed out some of the aggressiveness of this engine/turbo setup, but the elimination of the stock resonator and larger diameter piping from the Berk really gives the car a sinister snarl. Sound clips to come.
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ACF PTE 6062 BB Top Mount ST Kit, Fuel-It! Stage 3 LPFP, Phoenix Racing Port Injection Manifold + RACE FMIC, JB4 + BMS ST E85 PI BEF
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      01-16-2020, 08:43 PM   #360
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Great work; looking forward to the audio clips...

ianc
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"I got 328 loaner and was impressed with performance. It feels much faster than my 135i." - MOCKBA
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