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BMW 3-Series (E90 E92) Forum
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Custom Catless Manifold + BMS Downpip Fix Install
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11-26-2012, 08:33 PM | #45 |
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Got to get the collectors welded onto the slip on flanges so they can bolt up. I wanted to get them on the car before I tried to guess at fitment.
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11-27-2012, 08:26 PM | #46 |
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11-27-2012, 08:35 PM | #47 |
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12-05-2012, 11:26 AM | #49 | |
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Also. I dyno'd these puppies yesterday. There are gains all across the curve. Best run for HP had 12whp gain and max torque was around 20 lbs. Average gain through the band was 14lbs. I have to get the sheets properly scanned. I will provide a full breakdown. Last edited by mapleridge; 12-08-2012 at 01:18 AM.. |
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12-05-2012, 11:33 AM | #50 | |
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You should see if the shop wants to make these and sell for a lot less than the mmw ones. Sure they would sell. I think they appear to have better flow than those as well.
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12-05-2012, 04:11 PM | #51 | |
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12-05-2012, 06:08 PM | #52 |
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How did you come to this conclusion?
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12-05-2012, 06:44 PM | #53 |
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Merely comparing the diameter of the piping and the curved bends with no harsh angles. Could be wrong they just appear smoother and wider. Plus they are sort of crude looking so i assume theyd be cheaper. Which doesn't matter to me since you cant see them anyway. |
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12-05-2012, 08:47 PM | #54 | ||
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In the end, it makes power and tq. Thats all I care about. |
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12-05-2012, 09:17 PM | #55 |
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12-05-2012, 10:00 PM | #56 |
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12-05-2012, 10:09 PM | #57 |
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congrats on your mod working out.
I'd like to know more if this can be manufactured for a few of us on the forums. For scanner, visit a staples and bring anything else you need bound or printed on high quality or thick stationary paper. I used them in the past, pretty decent prices
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128i Sport 6MT converted to Euro 130i spec, 3.73 diff, tuned by evolve ~220 whp 207 wtq(ft-lb) SAE
In-progress: //M front arm, M3 rack, e36M lip Wishlist: Coils, n55 mnts, headers, LSD, e60 finn diff "The 1-series is the last car that BMW engineered before the Germans, as a car-making culture, fell out of love with driving." - R&T 2013 135is |
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12-05-2012, 10:31 PM | #58 | |
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12-05-2012, 11:08 PM | #59 |
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Ok. So I figured I would just post the crappy cell phone pic of the dyno results and a short video. Specs were as such:
Last edited by mapleridge; 12-05-2012 at 11:22 PM.. |
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12-05-2012, 11:54 PM | #60 |
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Kickass gains. Would you mind sharing the total cost if you haven't already?
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12-06-2012, 12:46 AM | #61 | |
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I bought OEM manifolds, had jigs built, had custom casting done, then fabrication of custom built units plus dyno sessions. I can have these reproduced now but I just wanted to be sure they yielded results. |
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12-06-2012, 04:04 AM | #62 |
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Gains look great! can't wait to do mine!
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12-06-2012, 08:16 AM | #63 | |
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12-06-2012, 10:47 AM | #64 | |
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its the z4 that isn't confirmed. A dyno with gains & a child. You must be in some king of emotional high. Congrats!
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128i Sport 6MT converted to Euro 130i spec, 3.73 diff, tuned by evolve ~220 whp 207 wtq(ft-lb) SAE
In-progress: //M front arm, M3 rack, e36M lip Wishlist: Coils, n55 mnts, headers, LSD, e60 finn diff "The 1-series is the last car that BMW engineered before the Germans, as a car-making culture, fell out of love with driving." - R&T 2013 135is |
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12-07-2012, 12:08 AM | #66 | |
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Thank you. |
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