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      08-18-2012, 12:33 PM   #1
Precision
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Recommendation for modification of my 330Ci

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I am looking for educated opinions on a modification game plan for my car. I have considered leaving it stock, it is my daily and I've also considered auto Xing it or just making it a quicker better handling daily but I'm not sure. I've been told as it sits it'd probably brake into a high 14 second in the 1/4 mile, it's not slow to me but I wouldn't mind having some more go.

The car:
2002 330Ci Sport, premium, cold weather package with 54,000 miles and an automatic transmission (I'm well aware that the auto kills it for a lot of people but whatever) and it has new continental contrasport tires



I'm looking for the best bang for the buck performance with out sacrificing quality
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      08-26-2012, 03:46 AM   #2
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get upgraded suspension is the only thing i recommend.
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      08-31-2012, 11:23 PM   #3
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Upgraded suspension is great... except that the ride quality gets hurt badly (usually). Get some dampening-adjustable upgraded coilovers. This way, you can adjust how hard the shocks are (I'm sure you'd it want a bit softer for everyday driving, then stiffer during auto-x runs). Not sure how much you'd want to spend on upgrades though.

Don't get ECU software as it'll be a waste of $$$ and will barely gain power at all. Definitely consider at least a drop-in high flow filter for maybe another few ponies afterwards. Consider an exhaust upgrade, mainly the rear section, as the stock one is VERY heavy. Exhausts from many companies can shave off often up to 50 pounds just with an aftermarket rear section, while freeing up a few more HP too. The closer you move towards the engine though, the more expensive things will get exhaust-wise. The rear section exhausts aren't exactly cheap either, but they have two good sides to upgrading it.

Here's Turner's dyno of their modded 330. Quite a lot of money was put into the car (talking probably over $10k if you're having it installed too; not worth tinkering too much with power adders)


Make sure if you want to do auto-x events, that the other suspension components can withstand the stress. Definitely consider upgraded front control arm bushings (stay away from hard materials such as metal or delrin, as they aren't ideal for the street- too aggressive for driving on bumpy roads). Just get a set from Bimmerworld (Powerflex) or AKG Motorsport. It's one of the best things you can do for under $100 to improve handling.

Since your car does not have a limited-slip differential, I highly recommend saving for one if you really want your car to perform well. This will definitely help you in the autocross, but it usually costs a lot. You can search around for used ones, but there's always questions about the true condition of it, and then if you're not that mechanically inclined, you have to get a shop to install it which can also take quite a few good hours.

Last edited by MrFukengruven; 09-01-2012 at 09:18 AM.
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      09-01-2012, 01:39 AM   #4
Precision
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I thought my car already has a 3.38
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      09-01-2012, 09:17 AM   #5
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Quote:
Originally Posted by Precision View Post
I thought my car already has a 3.38
Sorry, you're right. You do have a 3.38 lol
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