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General E46 Forum
This is the place to get answers, opinions and everything you need related to your E46 (sedan, coupe, convertible and wagon) BMW!

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Old 06-19-2017, 05:05 AM   #1
salahy
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should I upgrade my E46 320i to F30 320i ?

Hi guys,
Finally I am thinking to upgrade my E46 six cylinder to a F30 4 cylinder, I guess my car is just getting old, and I had a minor car accident recently,

Basically, I cant afford the 340i its just very expensive in my country and the gas also very expensive, but I read everywhere else that the 6 cylinder much better than the 4 cylinder turbo car, so I want to see what you guys think


Thanks
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Old 06-19-2017, 08:59 AM   #2
fordy_4
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The only F30 I have driven was a 330e. The interior looks flashy, but I don't think it will stand the test of time like the e46 has. Too much digital stuff


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Old 06-19-2017, 09:26 AM   #3
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If you find a good deal on an F30 320i, yes.
I would definitely aim for one with the sport package, lighting package, and manual transmission.

F30 320i with a JB4 tune produces the same power (within 5%) as the same tune on a F30 328i.
It will feel much faster than your E46 320i, but without the tune, the F30 320i feels lethargic..
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Old 06-19-2017, 10:20 AM   #4
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The 320i is mechanically identical to the 328i. They just detune it. I'm not sure what the logic behind that is. If i were to buy a new 3 series it would definitely be a 320 + an aftermarket tune. It'll be a quick little car.

Last edited by Starvega; 06-19-2017 at 10:20 AM.
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Old 06-19-2017, 10:34 AM   #5
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Originally Posted by Starvega View Post
The 320i is mechanically identical to the 328i. They just detune it. I'm not sure what the logic behind that is. If i were to buy a new 3 series it would definitely be a 320 + an aftermarket tune. It'll be a quick little car.
This is not true.

- Pistons are different
- Exhaust diameter is smaller (60mm vs 75mm)
- Drive shaft is smaller
- Diff is different
- Gearbox is different
- Brakes are smaller

Main concern would be the pistons & long term reliability with JB4.
The small power difference after tune is almost 100% due to smaller exhaust on 320i.
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Old 06-19-2017, 10:42 AM   #6
CalVol
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Unless you like doing walnut blasting as a hobby, stay away from the N54, N20 variants...

http://www.hpashop.com/Walnut-Shell-...e-Cleaning.htm
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Old 06-19-2017, 10:45 AM   #7
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Every car has its hobby. Newer cars with DI has its walnut blasting, sure. But we have our subframe welding, oil pump nuts, RTABs, FCABs, cooling system, etc. as hobbies.

Pick your battles.
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Old 06-19-2017, 10:51 AM   #8
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Quote:
Originally Posted by CalVol View Post
Unless you like doing walnut blasting as a hobby, stay away from the N54, N20 variants...

http://www.hpashop.com/Walnut-Shell-...e-Cleaning.htm
Walnut blasting should be one of the least concerning maintenance requirements for N54/55 owners, due to low cost / frequency of service. N20 even less so.

$250-300 every 50k miles is nothing.
Plenty of indy shops with the equipment quote this price for the service.
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Old 06-19-2017, 07:17 PM   #9
CalVol
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I'll pass on this generation of DI engines and removing the intake manifold every 50K to blow walnuts at the valves... or trust some 18yo tech at an indie to do it.

I'll wait on the next-gen multiport engines with both port and DI that don't have the carbon issue before considering an upgrade.
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Old 06-19-2017, 08:00 PM   #10
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I drove a '17 330i, when My '03 325i got serviced, and I didn't like the electric steering.

Last edited by SGK325i; 06-20-2017 at 10:36 AM.
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Old 06-19-2017, 09:30 PM   #11
GhostFlame
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Quote:
Originally Posted by CalVol View Post
I'll pass on this generation of DI engines and removing the intake manifold every 50K to blow walnuts at the valves... or trust some 18yo tech at an indie to do it.

I'll wait on the next-gen multiport engines with both port and DI that don't have the carbon issue before considering an upgrade.
Its annoying, but that's the life of DI. To be fair though, the buildup is not nearly as bad on the N20 engines as it is the N54/55.

Hope your 2001 E46 makes it to when the next generation BMWs depreciate to affordability
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Old 06-30-2017, 04:45 AM   #12
salahy
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Hello guys, after I did a test drive for 320i and 318i and see the fuel consumption, I think I will go for the 318i yeah its huge step for me cause right now I have 6 cylinders 170 HP going to way less than that, but for me its better regarding the fuel consumption and I really don't use the horsepower and speed that much, I rarely speed to 140km.
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