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      09-26-2016, 10:34 PM   #1
Maina
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xdrive 28i vsxdrive35i 50mph-70mph times

Hello all,

Can the people with tuned x1's tell me their overtaking times(50mph-70mph). For stock cars Car and Driver measured 4,1sec (35i) and 4.2sec(28i) which I am willing to believe as the stock xdrive28i that I test drove did not feel slow and I have seen what a (350hp/400lbft) 328i can do. I am looking to switch to x1 for bigger ground clearance and cargo space. Either one would be run on JB4 + intake and e40-e50. I am curious if there would be a big difference in tuned vehicles cause I hate the gear shifter of the 35i and the softer suspensions of the 28i would be welcomed.

Thanks!
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Last edited by Maina; 09-26-2016 at 10:59 PM.
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      09-29-2016, 09:51 AM   #2
Ja Gio
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How would I measure this?
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      09-29-2016, 11:03 AM   #3
vstolpner
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There are various apps that can do it for you using GPS in your phone, or with a Bluetooth connection to an OBD adapter you attach to the car (if you have one)

For the record, the 28i has plenty of power and I imagine with a JB4 it would become a beast. I've had a few people with me who drive the N54/N55 variants of other BMW models and they couldn't believe mine wasn't the same.
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      09-29-2016, 02:06 PM   #4
Ja Gio
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I have 28i with Dinan Stage 1. It's quick!

Can this be done with Dash Command?
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      09-29-2016, 04:02 PM   #5
vstolpner
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Most likely. I don't have Dash Command, but it does work with torque.
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      09-29-2016, 04:21 PM   #6
PrematureApex
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The cars are closer stock to stock. When you're talking about a JB4 and good gas, the N55 widens the gap considerably.

With flex fuel wires and a JB4, with adequate fueling running even half a tank of E85, you're looking at roughly 375+ whp.

E85 on a JB4 on an N20 is around the 300 whp mark. That's roughly a 100 bhp difference.

The suspension on a 35 isn't any firmer than one on a 28, nut sure where you got that info.

Hating the look of the old six speed is not at all a good reason to pick the N20 if you're looking for power/performance from modding. They even sell new gear levers which look just like the newer 8 speed to replace the ugly knob if you want.

Not that I don't think the N20 is the better choice for most people, with its 8 speed and improved efficiency.

That being said, someone looking to mod, going after power...yeah...hands down the N55. It's the difference between a quick fun little runabout trapping in the low 100s, vs. a downright sleeper running 110+. A $900 hotside upgrade, and you'd have a car that holds the N55 xdrive record...N55 X1, high 11's at 116 (on the stock turbo, intake/DP/50% E85 netted a 12.1 at 111).

http://www.german**********/showthre...-xdrive-record
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Last edited by PrematureApex; 09-29-2016 at 04:29 PM.
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