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DIY: Do It Yourself
Post here to share or improve your wrench turning skills! All BMW E46 DIY tips, tales, and projects discussed inside. Learn to work on your car and know the right BMW parts you will need!

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Old 10-28-2005, 01:06 PM   #1
DiscoStu
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Fuel injector replacement

My current fuel injectors need to go. I'd like to replace them with some brand new ones. Does anyone have a good DIY for replacing fuel injectors? Anyone have p/n for 328ci injectors? And lastly, can I upgrade to bigger injectors for higher fuel flow without having to modify my ECU?
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Old 10-28-2005, 01:25 PM   #2
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Get a Bentley Repair manual or use this link:

http://www.pelicanparts.com/BMW/tech...eplacement.htm

Good luck but it shouldn't be hard at all, just a bit tedious.
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Old 10-28-2005, 01:51 PM   #3
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Thanks for the link. All i need to do now is look into getting the injectors.
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Old 10-29-2005, 09:07 AM   #4
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You will need software if if you do decide to go the bigger injector route
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Old 10-29-2005, 07:02 PM   #5
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Injectors are really easy to replace.

I can almost guarantee unless you are boosted that you do not need bigger injectors. You are going to cause yourself more of a headache buy going bigger and no extra power adder to help consume all that fuel you are going to be dumping.

Why do you think you need new injectors?
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Old 10-31-2005, 02:47 PM   #6
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Quote:
Originally Posted by ///Mechanic
Why do you think you need new injectors?
The car has 103,000 miles. Haven't replaced them since i've owned the car, bought it with 45,000 miles. I've run my gas tank down real low a few times. I just feel like i'm being robbed of the potential power of clean fuel injectors
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Old 10-31-2005, 05:45 PM   #7
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I am in the same boat as you. I recently bought brand new ignition coils and fuel injectors for my 2000 323i.
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Old 10-31-2005, 06:19 PM   #8
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Originally Posted by DiscoStu
The car has 103,000 miles. Haven't replaced them since i've owned the car, bought it with 45,000 miles. I've run my gas tank down real low a few times. I just feel like i'm being robbed of the potential power of clean fuel injectors
If you haven't had any misfires or faults show up related than you are throwing your money out the window. OBD2 cars are so closely monitored, you can get a CEL for the slightest of changes in perameters. If it will make you feel more confident....take the fuel rail off and visually inspect your injectors. With some gas and a soft bristled brush you can clean them up. If it comes down to it, your dealership should have an injector tester in which they can install your injectors into the test rail and place the injectors in a tank of water........so you can see the spray pattern. I am sure they would charge you no more than 1/2 to 1 hour of labor, if they charge you.

Seriously though.........you are wasting your money without a CEL.
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Old 11-01-2005, 01:03 AM   #9
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how much would six new injectors cost me?
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Old 11-01-2005, 08:12 PM   #10
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hey go to turnermotorsport for cheap injectors that are slightly used. They sell the used one for $113 for all six. Basically, turnermotorsport suped up their e46 so they can race them. in return the sell off all the OEM stuff for dirt cheap.

As for me, I went with buying all 6 brand new injectors from circlebmw. I wanted that "brand new" peice of mind. they cost me around $100 per injector.
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