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04-01-2008, 09:04 PM | #1 | |
form follows function
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128i -> 130i N52 3 stage manifold tech
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BMW 128i N52B30: 172 kW (230 hp) @ 6500 rpm and 271 N•m (200 ft-lb) @ 2750 rpm attempting to fit the three-stage intake manifold and replace ecu onto a 325i was attempted by RichP also on e90post - however he never finished, and the question is still up in the air http://www.e90post.com/forums/showthread.php?t=27727 honestly i wouldnt feel right saying that this is probably the best way to start trying to get more power out of the 128i (honestly if thats all you care about really spend the 5k and get a 135) but the gains in emissions, efficiency as well as what probably are the most substantial torque/power gains your going to get on an N52, are all very attractive to me. the main reason i wouldnt just jump on the 128i are because for the compromise in hp youre really not getting better fuel economy and for me the prospect of a M120 CS what-have-you is worth holding out. but the technical possibility of this suggests significantly better engine performance. really its all just for discussions sake, and to bring to the attention of those that were unaware or were in the same camp as I when i saw BMW produced a 3.0l N52 that made 32 more horses and lb-ft. i especially am still unsure as to how these differences in intake manifold design wouldnt allow the 325 the same performance at high rpms assuming it's intake manifold essentially operates the same as the 330 but with all 3 pipe valves open all the time. can anybody shed some light on the differences in the 325 v 328? im digging around for that now, i had found a great resource that compared the three on the surface level very indepthly (if that makes sense) but cant find it now also anybody have any dynos for comparisons sake? I cant find any from E9X 325, 328 or 330.. and that would probably contribute a lot to the discussion |
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04-03-2008, 06:00 PM | #2 |
en masse
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I'm interested to see how the different intake manifold affects gas mileage/performance. I'm only looking at the 128 because of it's mileage rating for performance and $ output. I've heard of a lot of 328 guys consistently getting well over 30mpg on the freeway, and mid-low 20's in the city. The 135 is just too thirsty. Fast, but bank breaking at the pump.
If the 330 manifold/sofware retains good gas mileage along with a bump in power, It may be worth the extra money, for some. Thanks for the info, aesthetect! |
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04-03-2008, 09:40 PM | #3 |
form follows function
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yeah thats essentially the same reasons im interested in all this. i dont need 300hp and would much rather get a little better gas mileage. it would seem to me that above all else adding the 3 stage manifold would increase fuel economy as well as performance in the intermediary range. because the 128 as it is does not yield enough of a fuel economy gain for it to really be worth sacrificing the power one could get with a 135 (although the jury on real world driving reports on the respective fuel economies is still out).
however it really wouldnt surprise me if bmw upgraded to the 130 once the 135 got a little more boost or was taken out of the picture.. just one more reason why going through all the headache of fitting the manifold and getting the ecu to use it correctly wouldnt be worth it. |
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05-30-2008, 06:58 AM | #5 |
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Here is the dyno of the bmw 130. Clearly gains to be had...!
http://www.rri.se/popup/performanceg...p?ChartsID=239 |
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06-01-2008, 07:18 AM | #10 |
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I have not bought either car yet but I actually prefer driving the 128. It just needs a little bump in power say 30 ft/lbs. I am willing to pay parts, labor, and programming but I can not find anyone who knows how.
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06-04-2008, 06:41 PM | #12 |
form follows function
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seriously? you even wrote the title in the same way..
http://www.1addicts.com/forums/showthread.php?t=6487 follow that link to E90post for more information or to find people who have tried |
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06-06-2008, 12:06 PM | #15 |
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That sucks...even though im not getting a 128i, this still really sparked my interest. *cough* hmmm guess I..with the help of some good 1addicts, could start this..we would basically have the 128i market to ourselves....just a thought:thumbup: just need the
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06-14-2008, 07:18 PM | #17 | |
Private First Class
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did anyone else catch that the acronym doesn't match with it's description:
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i guess it doesn't matter, it just made me laugh. |
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07-12-2008, 04:06 PM | #21 |
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Yes, it does.
Upon further investigation, it might be possible to retrofit the DISA from an N52B30O (X3/Z4/X5) 3.0si into an N52B30M (_28i). If you look at the intake, there are two plugs attached to it. They are for the DISA valves. That takes care of the wiring issue. If BMW can issue a new VO for programming, all it might need is a new intake and the DISA valves. I have training in Montvale next week, so I'll ask one of the instructors. |
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