Anyone ever take their headers/cats out?
03-16-2011, 12:14 PM
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Hey guys,
I'm going to be doing some aftermarket headers on my car and was wondering if anyone had any experience taking the headers out on a e60? I mostly want to know if it can be done without removing any engine mounts?
I'm going to be doing some aftermarket headers on my car and was wondering if anyone had any experience taking the headers out on a e60? I mostly want to know if it can be done without removing any engine mounts?
03-16-2011, 08:46 PM
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hmmm. 43 looks and no comments. Looks like I may be pioneering this myself...
03-16-2011, 09:03 PM
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Removing the factory exhaust manifolds is described step by step in the Bentley e60 service manual for each engine platform, but the manual is in my car at the moment so I can't describe each step for you at the moment. I do know that the v8 model says you have to disconnect the engine mounts and drop the subframe, but I know of one man who did the v8 headers without dropping the subframe. He said it took him 30+ hours to do the job though..
03-17-2011, 01:58 AM
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my question is, why? bmw puts more work in to the stock exhaust design than you may think. i'd be willing to bet that you would at best see minimal gains in power improvement, and more likely you will lose torque.
if you want more power, get a 550 or m5.
if you want more power, get a 550 or m5.
03-17-2011, 06:14 AM
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Interesting that you think this. Yes I agree bmw does have probably some of the best oem exhaust systems out there, however many people with e46's have done this with great results. The biggest reason that this is so successful is that by going to aftermarket headers I will be removing the cats, the cats are the most restrictive part of the bmw exhaust. This is really not much different than the twin turbo guys going to catless downpipes.
03-17-2011, 01:59 PM
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It's that attitude that gets us the "next best thing".
I just think it might be too much work, but I've been reading your posts about doing this, and it seems you got your mind set! Not many can help because most have not attempted, and wouldn't bother going where no...blablabla
03-17-2011, 04:28 PM
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yeah most likely you will need to drop the subframe, had to do it with my catless downpipes. On the 5 series, its very tight and hard to get into certain areas so most likely you will need to drop it. Def is alot of work for headers