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3-Series (E46, E90) Chat relating to the BMW 3-Series from 1999 to Current. Models include: BMW 316i, BMW 318i, BMW 318Ci, BMW 320i, BMW 323i, BMW 325i, BMW 330i, BMW 328 Ci, BMW 328i, BMW 325i/xi, BMW 330Ci, BMW 320d, BMW 330d, BMW 335d.

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Old 08-29-2006, 02:36 AM   #1 (permalink)
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Just Bought A 320SI

Hi

I am a new user to this forum

I just bought my first BMW 320 SI its a limited edition only 2600 units made worldwide. Any body now what tuning i can do to the engine?



P.S. The Plate Shown 320I is wrong its SI
Thanks
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Old 08-29-2006, 07:22 AM   #2 (permalink)
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damn d00d that's gorgeous! I wouldn't start messing with it until addequate research is done on those engines. I assume those engines are new? If not check out TMS, BavAuto, or other repuatble BMW retailers
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Old 08-29-2006, 07:56 AM   #3 (permalink)
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Pardon me for being ignorant but what engine does the 320si have and what makes it an si?
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Old 08-29-2006, 10:46 AM   #4 (permalink)
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Nice ride. Welcome to werkz

The 320si is a special version built in 2006 and limited to 2600 units. Inspired by touring car racing, the 320si is uses a high revving engine (max 8000 rpm) similar in size to the 320i, but with reduced stroke (by 2 mm to 88 mm) and increased bore (by 1 mm to 85 mm). Compression ratio is also increased to 11,0:1. The engine is mostly hand built, and does not have valvetronic, thus decreasing the number of moving parts for increased high-revving capability.

The engine is a N45B20S 2.0 (1997cc) 4-cyl, 16-valve that puts out 173hp and 148lb-ft.
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Old 08-30-2006, 01:15 AM   #5 (permalink)
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daniel stop copy and pasting. thanks.

n00b
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Old 08-30-2006, 06:49 AM   #6 (permalink)
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Quote:
Originally Posted by drz
Nice ride. Welcome to werkz

The 320si is a special version built in 2006 and limited to 2600 units. Inspired by touring car racing, the 320si is uses a high revving engine (max 8000 rpm) similar in size to the 320i, but with reduced stroke (by 2 mm to 88 mm) and increased bore (by 1 mm to 85 mm). Compression ratio is also increased to 11,0:1. The engine is mostly hand built, and does not have valvetronic, thus decreasing the number of moving parts for increased high-revving capability.

The engine is a N45B20S 2.0 (1997cc) 4-cyl, 16-valve that puts out 173hp and 148lb-ft.
man, beat me to it lol
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Old 08-30-2006, 08:08 AM   #7 (permalink)
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Seems kinda odd that the S14 put down 200+ mph back in '88 but this one only puts down 173 some 18yrs. later and with an 8k redline? Not that there's anything wrong with that, just seems like they could have done more with it if they had kept the valvetronic. I don't really see where Vavletronic should interfere with the ability to revv either. Just look at the first gen. S2000's, they had some ungodly rev. ablitiy but I'm pretty sure they were V-Tech as well. Which is another reason they put down like 240hp. Don't get me wrong, I'm not hatin on your car man, it's an engine tuners wet dream and beautiful to boot! I'm just wonderin! SWEET RIDE-CONGRATS! Oh and as far as mods, I would definitly start with a Dinan chip if there's one out there yet! I'd say on a handbuilt Hi-Rev job like yours, that would definitly be the most bang for the buck! Then I would go with a really good exhaust setup, maybe a Billy Boat or something of that callibur. Maybe check into how restrictive your intake is, but in my experience CAI's are a waste of time and money and unless you get a really good one and are pulling alot more than stock CFM through it, you may even lose hp! But again with it being a high rev mill, you may stand to benefit from a good one. Good luck and happy motoring!

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Old 08-30-2006, 11:16 AM   #8 (permalink)
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Quote:
Originally Posted by red330Iperfpkg
daniel stop copy and pasting. thanks.

n00b
It was all stuff I already knew, but it saves company time if I just swing by wikipedia real quick, ctrl+c, ctrl+v, instead of typing it all out.

n00b!
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Old 08-30-2006, 11:18 AM   #9 (permalink)
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Inspired by touring car racing,...
I am sure this is the part that gave me away
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