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      06-02-2010, 02:44 PM   #1
tgxmike
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Anyone have the PowerBox on N51 Engine?

Just like the title says, does anyone have the powerBox tune on their N51 engine. I'm considering purchasing one.

It would be cool to see some Dyno numbers, or any other metric to compare.
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      06-02-2010, 08:51 PM   #2
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Mine is an N51, had the Pbox on for 8k miles now, and love it.
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      06-02-2010, 09:13 PM   #3
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Quote:
Originally Posted by Fireflyer239 View Post
Mine is an N51, had the Pbox on for 8k miles now, and love it.
Sweet, I've read your other posts w/ roll on acceleration times, etc. This def makes me want to look into the Pbox soon. (and the drop in air filter). Have you made it to the dyno yet?? I'm dying to see the umbers off an N51.... See my next post for why.
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      06-02-2010, 09:24 PM   #4
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I meant to post a lot more in the orginal post. I've been scrolling throught the 3er forum, and found some info on the 325/328 to 330 conversion.

http://www.e90post.com/forums/showthread.php?t=372973

Looking at the list of parts required for the conversion I realized those are the parts specific to the N51 in the 128i I have...

The major parts look to be the same, and the only major difference I see is the need for a ECU upgrade..... enter the BMS PowerBox (maybe)

So did BMW just put a 265HP engine in the SULEV 128i and detune it???
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      06-03-2010, 05:47 AM   #5
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Hmm tough to say, but an interesting thought. There could be any small number of differences that are critical. In any case, I can tell you I've been very pleased with the Pbox. I don't really think about it being there day-to-day, but the other day I shut it off just for kicks (went to map "0") and it felt like somebody threw out the anchor. I don't care that much of the improvement is "only" throttle response and not big power gain, because in the environment where I do much of my driving (secondary and country roads), it makes the car so much more enjoyable.

That said, there is some power gain, and I'd like to augment that with more air - but don't want the awful rice noise of an Injen or the expense of the BMWP intake. Anyway, good luck with your car.
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      06-03-2010, 02:30 PM   #6
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Quote:
Originally Posted by Fireflyer239 View Post
I don't care that much of the improvement is "only" throttle response and not big power gain, because in the environment where I do much of my driving (secondary and country roads), it makes the car so much more enjoyable.

That said, there is some power gain, and I'd like to augment that with more air - but don't want the awful rice noise of an Injen or the expense of the BMWP intake. Anyway, good luck with your car.
I'm more interested in Map7, w/o throttle remapping. With the 6MT the throttle remap isn't really that useful, and I actually like the throttle map used now. If I had an Auto, the throttle mapping would be necessary. I drove a 328i auto for a while, and the pedal is more like mush....
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      06-03-2010, 04:34 PM   #7
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Quote:
Originally Posted by tgxmike View Post
I'm more interested in Map7, w/o throttle remapping. With the 6MT the throttle remap isn't really that useful, and I actually like the throttle map used now. If I had an Auto, the throttle mapping would be necessary. I drove a 328i auto for a while, and the pedal is more like mush....
Even on the manual, the Power Box changes how your throttle reacts to your inputs. It becomes much more crisp and feels reminiscent of a tuned naturally aspirated motor rather than a mundane motor that's soulless.
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      06-03-2010, 07:44 PM   #8
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Very true - I have the 6MT and the Pbox on map 3 is the way to go. Car is much more lively, much more of a pleasure to drive!
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