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Go Back   E46Fanatics > Tuning & Tech > Driveline, Engine & DME Tuning

Driveline, Engine & DME Tuning
Talk about driveline improvements, NA tuning and DME tuning your E46 BMW here. This includes diffs, intakes, exhausts, chips, software and OBD tuning.

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Old 09-10-2008, 12:12 PM   #21
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Originally Posted by snikwad View Post
I almost bought some M54 cams on here to put into my sharked M52.
I was told that I'd prolly have to remove the shark injection since it wouldn't match the M54 cams.

Then when I enquired about the actual cam swap, my tech buddy asked his master tech. He said there is a special tool that is required to replace the cam brackets, I believe they're called journals. Well anyway, this tool is to ensure that they are not over tightened when replacing the cam. I 1st thought, hmm, what about regular ass torqueing it to specs. But I guess our BMW heads are too sophisticated for that simple method. Since its already 2 for the master tech and 0 for us, I decided to just take his word on this one.
Besides after contacting TMS they said I'd have to get custom software or a piggyback type setup to correct my AFR that the cams would throw off. So I've decided to research swapping M3 brakes unto my 328i and maybe dropping a S52 motor inplace later on, instead of boosting.
Wow I'm going to call BS on you needing diff software to run M54 cams.

BMW even sells the ZHP cams as a "BMW Performance upgrade" to the non-m owners. There are lots of people on here running even more aggressive Schrick 264/248 profile cams even without any form of tune. Vanos can compensate for different profiles enough, and you will definitely notice a performance increase without software. While I will agree that a custom tune would be best, running your shark with any cam profiles publicly available will be fine. I'll also say that I wouldn't spend money on labor to put 330 cams, or even zhp cams... If you are going to do it, get the schricks for sure!

As for the cam tool, that's true. It can be done without that tool, but BMW says it shouldnt... just like we should never change our transmission or diff oil The part about the cam change process that may be difficult is the timing, which I think there is a special tool for as well.
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Old 09-10-2008, 12:13 PM   #22
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He said there is a special tool that is required to replace the cam brackets, I believe they're called journals.

I can't see how cam installation on this head is any different than M50/M52 which has never required a special tool for the caps. There is a special tool for the entire cam, is that what he is talking about??
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Old 09-10-2008, 03:33 PM   #23
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damn guys, now you all got me thinking about this cam swap again. Active how many parameters does the shark injection change, does it alter cam timing too, i was made to understand that this is where the problem lies, that the timing is adjusted for the M52 cams and that the M54 cams may throw it way off.
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Old 09-11-2008, 06:31 PM   #24
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damn guys, now you all got me thinking about this cam swap again. Active how many parameters does the shark injection change, does it alter cam timing too, i was made to understand that this is where the problem lies, that the timing is adjusted for the M52 cams and that the M54 cams may throw it way off.
It doesn't alter cam timing, vanos does that. The double vanos can adjust cam timing for pretty much any publicly available cams, without the need for tuning.

Some sites list the M52TU schrick cams as 248/248, which are pretty close to stock zhp cams. However, the ones listed for the M54 are the 264/248, which I would recommend, even on the M52tu.

To give you an example, when you're boosted you can run the 248/256 cam profiles, which vanos makes up for, even without a tune. I've heard that the max adjustment on the vanos for the exhaust cam is a 256 profile, which is why no one really runs anything higher than that.
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Old 09-11-2008, 07:48 PM   #25
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but shrick cams cost a grip man, i think ill pass.
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Old 09-11-2008, 07:50 PM   #26
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yeah, you're right. I guess I assumed that you were paying a decent amount for the M54 ones. If you get them cheap enough and have a tech who would do the install for cheap, that wouldn't be bad at all.
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Old 09-11-2008, 07:52 PM   #27
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i can get em less than $100 for the 54s
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