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  #1  
Old 06-23-2015, 10:15 PM
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Exhaust headers

So of course when browsing for headers on eBay it seems like there's a multitude of them but when it's time to actually buy them they're sold out everywhere.

Searched for X5 E53 headers and 325/330i headers yet none are to be found.

Any help with locating some?
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  #2  
Old 06-23-2015, 10:17 PM
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Are you just looking for generic ebay headers? I think the general consensus is they hardly ever fit right. But they are cheap enough to give it a shot.

m54 headers | eBay
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Old 06-23-2015, 10:26 PM
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Those are the same ones I keep seeing. If i'm going the E46 header route then I need the 325/330i fitment. It's longer therefore a better fit on the X.
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Old 06-24-2015, 11:03 AM
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Get the 330 fitment, you'll need about a 1" extension to mate up to the factory midpipes. Its been done before, the headers are cheap at about $100

If you don't have emissions testing and can live with a CEL go for it
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Old 06-24-2015, 11:31 AM
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Unfortunately there are none available on eBay right now. Sigh.


2002 BMW X5 E53 3.0i

"If you ain't first, you're last"
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2002 BMW X5 E53 3.0i- 235,XXX miles
Born 26 MAR 02

Current Mods
-Quad Muffler
-X-Pipe
-Exhaust Headers
-Conforti Shark Injector
-Pedalbox
-Dynavin N6
-Replica 87 wheels
-H&R Wheel Spacers
-LED interior lighting
-DEPO Headlights


Driving this X5 until the engine finally gives out.....then LS Swap or V10
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  #6  
Old 06-24-2015, 11:55 AM
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I assume your goal is improved performance? If so, and if you have not made other mods to the rest of the exhaust system I suggest considering that route as well. And then weigh to cost to the supposed increase in HP and TQ to decide what mods will deliver the best results per dollar spent. If your 3.0 is stock there are engine mods that are very likely to be the best value.
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Old 06-24-2015, 12:47 PM
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Exhaust headers

I've already did a muffler delete and put in new tips, installed an x-pipe, an AFE CAI, installed a pedalbox, and tuned it with the conforti shark injector. The headers are pretty much my last thing on the performance list with the Bosch mustang fuel injectors going on there somewhere down the line. I'm located in Minot, North Dakota so I won't have to worry about emissions testing therefore I don't have the need for cats as long as I'm registered here.


2002 BMW X5 E53 3.0i

"If you ain't first, you're last"
__________________
2002 BMW X5 E53 3.0i- 235,XXX miles
Born 26 MAR 02

Current Mods
-Quad Muffler
-X-Pipe
-Exhaust Headers
-Conforti Shark Injector
-Pedalbox
-Dynavin N6
-Replica 87 wheels
-H&R Wheel Spacers
-LED interior lighting
-DEPO Headlights


Driving this X5 until the engine finally gives out.....then LS Swap or V10

Last edited by mrcarter20; 06-24-2015 at 02:05 PM.
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  #8  
Old 06-24-2015, 01:30 PM
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How did you like the shark injector? I have a 4.8iS exhaust and an AFE intake and wanted to shark it to complete the "bolt-ons"
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2018 Ram 2500 6.7L Cummins 68RFE
19k miles -Bright White/Black - Big Horn Sport - Crew Cab Short Bed
2013 X5 35D (CEO's) - Born on 5/17/2013 -
82k miles - Alpine White/Cinnamon Brown/Premium Pkg, Sport Activity/Premium Pkg and Sound/20" Style 214/Running Boards

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  #9  
Old 06-24-2015, 02:04 PM
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I can feel the difference. The shifting is smoother and it has a better response. I can get to redline all the way up to 3rd gear and it hits 6500 rpm before it auto-shifts in 4th. I'm sure it would work even better on manual transmissions. Should've done it sooner.


2002 BMW X5 E53 3.0i

"If you ain't first, you're last"
__________________
2002 BMW X5 E53 3.0i- 235,XXX miles
Born 26 MAR 02

Current Mods
-Quad Muffler
-X-Pipe
-Exhaust Headers
-Conforti Shark Injector
-Pedalbox
-Dynavin N6
-Replica 87 wheels
-H&R Wheel Spacers
-LED interior lighting
-DEPO Headlights


Driving this X5 until the engine finally gives out.....then LS Swap or V10
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  #10  
Old 06-24-2015, 03:36 PM
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The exhaust system is considered in the tune. Unless the tuner states increases are based on particular modifications to the exhaust it should mean that they are using stock exhaust to reach the HP and TQ increases claimed.

I would go to the tune source to get their take on how your exhaust mods have impacted those claims. To increase torque you need high exhaust velocity--smaller pipes. Generally to increase HP you want less exhaust velocity--bigger pipes or less restriction. The smaller the displacement the more likely that won't stand up but my guess is the 3.0 will benefit most from back pressure reduction. It is a given those headers are not part of the tune you have. I would check with tuner to be sure but I would consider electric cutouts after the pre cat O2 sensor to reduce back pressure the most and without engine errors. I would find out if the injectors you are planning to add will help, I suspect they won't help. In my experience smaller displacement engines like the 3.0 are harder to choose the right mods, higher risk if you are not going a proven route.

If you really want to be first a lot more often, than forced induction on a small displacement engine like a 3.0 is going to deliver the big numbers.
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Last edited by bcredliner; 06-24-2015 at 03:49 PM.
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