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      01-14-2011, 05:32 AM   #1
e87fan89
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2011 328i 0-60 (video)

I wana know what you guys think of my 0-60, I timed it around 5.8~6 seconds.
I have an AA tune with bmw perf. exhaust and K&N filter.

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      01-14-2011, 09:11 AM   #2
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Hey - cold weather and one person on board, the 328 isn't half bad!
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      01-14-2011, 09:55 AM   #3
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      01-14-2011, 10:19 AM   #4
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Automatic???
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      01-14-2011, 10:22 AM   #5
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Didn't C&D get 5.9 out of stock 328i?
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      01-14-2011, 11:14 AM   #6
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The video is all green. I can't see it.
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      01-14-2011, 12:15 PM   #7
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I dunno about C&D and yes my car is automatic =)
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      01-14-2011, 01:23 PM   #8
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How much of an impact did the AA tune do? Im looking to get it.
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      01-14-2011, 01:23 PM   #9
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Quote:
Originally Posted by e90fan89 View Post
I dunno about C&D and yes my car is automatic =)
Sweet!

Did you use DS or M mode? Looked to me the car was shifting at redline.

Do you have light weight wheels and tires on? If not they might help a little more.
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      01-14-2011, 02:52 PM   #10
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nop no lightweight tires or rims.

The AA tune is great, a place called RPM north on long island did it for me
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      01-14-2011, 03:24 PM   #11
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Originally Posted by e90fan89 View Post
nop no lightweight tires or rims.

The AA tune is great, a place called RPM north on long island did it for me

I just noticed you have an ix, that says a lot about what you have gained. Did you change gears at redline or around 5500 to 6000?
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      01-14-2011, 04:16 PM   #12
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i let the car shift at redline in DS mode
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      01-14-2011, 04:22 PM   #13
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Quote:
Originally Posted by e90fan89 View Post
i let the car shift at redline in DS mode
Have you ever tried to use M mode and let the car shift for you and see what time can you get? In M mode the car shifts at redline instead of 6000. In DS mode the car actually shifts at between 5500 to 6500 I think.
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      01-14-2011, 11:16 PM   #14
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Yes the results are about the same i think even a bit worse tbh
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      01-14-2011, 11:32 PM   #15
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Yes the results are about the same i think even a bit worse tbh
You are not the only one saying this. Based on some empirical 335i analysis, the optimum shifting points are very close to 7000 redline from 1st to 3rd gear. I begin to think the difference has to do with the fact the 328i has higher gear ratios than 335i.
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      01-14-2011, 11:32 PM   #16
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      01-15-2011, 05:55 AM   #17
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The only reason 335i's shouldn't be shifting at redline is because of torque curve. The NA 328i N52 is what people would consider conventional "peaky." Let it wring out all the revs for best results.
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      01-15-2011, 06:08 AM   #18
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Quote:
Originally Posted by dtc100 View Post
You are not the only one saying this. Based on some empirical 335i analysis, the optimum shifting points are very close to 7000 redline from 1st to 3rd gear. I begin to think the difference has to do with the fact the 328i has higher gear ratios than 335i.
No, it more to do with the different torque curves and the fact one is F/I and falls flat on its face when its within 1000 to 1500rpm or so of redline.

Redline the crap out of an N52 for best results.
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      01-15-2011, 08:23 AM   #19
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The 335i is certainly faster, but the 328i can get out of it's own way.
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      01-15-2011, 09:26 AM   #20
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Quote:
Originally Posted by michaelthepsycho View Post
The only reason 335i's shouldn't be shifting at redline is because of torque curve. The NA 328i N52 is what people would consider conventional "peaky." Let it wring out all the revs for best results.
I was refering to the empirical optimum shift analysis for the 335i, which called for best shifting points near redline, which if correct should make the 328i even closer to redline, like you said.

But in the real world practice, we hear that people get better time in 328i's by shifting BEFORE redline. Maybe that 335i analysis was wrong. If not, the only possible reason I can think of is the 328i has higher gear ratios.

I know the 335i owners don't like to hear it, driving a BMW NA I6 car, especially for the fact you can WOT it all the time, is pure pleasure Unfortunately they likely will disappear soon.
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      01-15-2011, 09:28 AM   #21
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Quote:
Originally Posted by J02 335i View Post
No, it more to do with the different torque curves and the fact one is F/I and falls flat on its face when its within 1000 to 1500rpm or so of redline.

Redline the crap out of an N52 for best results.
See the above.
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      01-15-2011, 10:51 AM   #22
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Quote:
Originally Posted by dtc100 View Post
I was refering to the empirical optimum shift analysis for the 335i, which called for best shifting points near redline, which if correct should make the 328i even closer to redline, like you said.

But in the real world practice, we hear that people get better time in 328i's by shifting BEFORE redline. Maybe that 335i analysis was wrong. If not, the only possible reason I can think of is the 328i has higher gear ratios.

I know the 335i owners don't like to hear it, driving a BMW NA I6 car, especially for the fact you can WOT it all the time, is pure pleasure Unfortunately they likely will disappear soon.
I've not heard of 335i accelerating faster by shifting at red line. HP fall off is pretty sharp past ~5500rpm on 335i unlike 328i, so I'd surprised people pull off better time by getting into lower HP range.

328i certainly has different gear ratio and final drive ratios, much higher than 335i. However, different optimal shifting point is all due to the difference in HP vs RPM in two engines.

Where is this empirical data you saw?
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