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Old 08-11-2016, 02:32 AM   #1
YoitsTmac
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328 autos: lets talk shifting

Ah, haven't had to create a thread in a while. I've been quietly asking myself if my auto is shifting differently due to my bad VANOS seals that I refuse to replace. This is all pertaining to light/slow acceleration, like around town. I drove my friends 330Ci and that thing shifted really early, dropping from ~1,700rpm to 1,100rpm. Now yes that is a different transmission and yes the 330 has more low end torque, but I don't think it had enough less torque to justify different transmission programming. My moms economy car shift sooner in some occasions and has nearly half the torque.

Getting down to the real question, what rpm does your auto typically shift at under light/slow acceleration? First shifts to second (if not already in second at takeoff) at ~2,200 and 10mph. I know the gap between third and fourth feels huge. Driving in third in the 20mph's at 1,800-2,100rpm. Stubborn son of a b*tch won't upshift to fourth until 30mph. The engine feels much happier when forced into fourth at 25mph. It feels like the car is revving too much for the task towards the end of the gear. No my transmission doesn't make funny noises. All I know is the 330 did most shifts under 2k and nearly all of mine are over 2k.
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Old 08-11-2016, 07:41 AM   #2
Quadcammer
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replace your vanos seals. I'm not sure why you would refuse to do that. Cheapest power gain you'll ever have.
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Old 08-11-2016, 10:20 AM   #3
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Between 2000-2500 in D and 2500-3000 in S D mode. Really really wish it was stick tho
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Old 08-11-2016, 10:35 AM   #4
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My lexus is in 7th gear before I get to the next stop light haha it's amazing how fast and how often newer automatics shift. even crawling through parking lots looking for parking spaces, i look down and i'm in 3rd, 4th, or 5th gear

but yes change vanos seals if you intend on keeping your car. no brainer
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Old 08-11-2016, 11:28 PM   #5
YoitsTmac
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replace your vanos seals. I'm not sure why you would refuse to do that. Cheapest power gain you'll ever have.
No one has given me any reason to beyond power. I find the DIY slightly intimidating, so I am unconsciously postponing it.

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Between 2000-2500 in D and 2500-3000 in S D mode. Really really wish it was stick tho
You and me both buddy. We just gotta save up! I wanna save for a 420G...

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My lexus is in 7th gear before I get to the next stop light haha it's amazing how fast and how often newer automatics shift. even crawling through parking lots looking for parking spaces, i look down and i'm in 3rd, 4th, or 5th gear

but yes change vanos seals if you intend on keeping your car. no brainer
That's crazy! Actually not too surprising, sounds like the F30 I drove. I plan on keeping it, but plan on a new powerplant in 2-3 years. No one has ever told me any reason as to why I should aside from power and fixing a cold idle, but I'm sure I'm about to get schooled....
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Old 08-12-2016, 06:51 AM   #6
OnTheFence
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I haven't looked in a while but I am pretty sure my auto E39 shifts @ 3000 (and when in sport mode it shifts @ 3500)
If you've got heavy throttle, it might not even shift until 4000

Your numbers seem way off. Shifting at 1700 is unheard of. 1100 is barely above idle.

Last edited by OnTheFence; 08-12-2016 at 06:51 AM.
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Old 08-12-2016, 07:48 AM   #7
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My E39 528iA started shifting at lower RPMs after I changed the oil and filter. Don't know what the explanation is, but it was exactly the reason why I had them changed.
In S mode, it was getting up to at least 6K, don't know exactly because I don't like pushing my cars hard (although, I've been cruising with the E39 with 200 km/h for long periods).

Have you thought about getting paddles, so you can get the most out of the steptronic?
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Old 08-12-2016, 07:50 AM   #8
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You and me both buddy. We just gotta save up! I wanna save for a 420G...

Has me thinking...can a 6 speed be put in a 323/328i/Ci as opposed to the 5 speed? I don't see why not
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Old 08-12-2016, 09:35 AM   #9
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Has me thinking...can a 6 speed be put in a 323/328i/Ci as opposed to the 5 speed? I don't see why not
Pretty sure any combination of any trans can be put into an E46. Even possibly up to E60 trans (which often share w/ the e46 and E9x) they're all familiar setups.

I've heard people in racing actually prefer the 320z 5 speed though and they swap the e46 m3 6 speed for the 5 speed. Something about being more durable? might want to red up on that.

every 320z i've encountered has been flawless well beyond 200k. im talking beaten up M3s with original fluid too! only thing that isnt so good is fuel economy on the freeway.. 4k rpms @75mph.. lol
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Old 08-12-2016, 09:46 AM   #10
lllRazorlll
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Pretty sure any combination of any trans can be put into an E46. Even possibly up to E60 trans (which often share w/ the e46 and E9x) they're all familiar setups.

I've heard people in racing actually prefer the 320z 5 speed though and they swap the e46 m3 6 speed for the 5 speed. Something about being more durable? might want to red up on that.

every 320z i've encountered has been flawless well beyond 200k. im talking beaten up M3s with original fluid too! only thing that isnt so good is fuel economy on the freeway.. 4k rpms @75mph.. lol
Yeah that's for further down the road when my transmission starts to slip. Good to know though
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