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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 12-14-2011, 05:38 PM   #21
Hobbit382
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Oh and to the op the lifters and tray are the exact same part numbers. The s52 springs are better though. You will need the spring seat, spring and retainer if I remember right.
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Old 12-14-2011, 05:55 PM   #22
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a picture of the difference.

m/s 52 the helix is one solid piece with bigger diameter threads

m52tu/m54 smaller threads and is actually a bolt that goes through the helix.

the reason you have to add a spacer to s52 is because the helix is designed for 12 degree rotation of single vanos where the tu/m54 is 20 degree AFAIR
adding the spacer (has to be smaller that the splines) allows the vanos gear to rotate the full 20 degrees.
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Old 12-15-2011, 01:17 PM   #23
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Sounds like a lot of work, and risk of breaking the cam. If you could find the intake cam for cheap, it might me worthwhile.
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Old 12-15-2011, 10:33 PM   #24
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Brought a completely bone stock 323i to 178rwhp with a dirty old air filter and a scared #3 cylinder wall.
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Old 12-15-2011, 11:27 PM   #25
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Brought a completely bone stock 323i to 178rwhp with a dirty old air filter and a scared #3 cylinder wall.
Thats more then a fair jump , All that In a swap I was thinking of going with some shrick cams but I see a mixed review already and some have said the very same , You wont get that much gains for the price you pay.
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Old 12-15-2011, 11:40 PM   #26
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Brought a completely bone stock 323i to 178rwhp with a dirty old air filter and a scared #3 cylinder wall.
It's actually about normal for a stock 2.8.



Edit, wait what?! Dyno graph please.
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Old 12-15-2011, 11:51 PM   #27
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it's actually about normal for a stock 2.8.



Edit, wait what?! Dyno graph please.
2.5

All that In a 2,5 hmmmmm
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Old 12-16-2011, 01:34 PM   #28
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honestly I wasnt very impressed with it. as I said dirty airfilter and had a scored cylinder wall on #3. it also kinda started to break up at the end on the graph. Due to bad airfilter? no tune with cam? you guess is as good as mine.
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Old 12-16-2011, 02:25 PM   #29
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honestly I wasnt very impressed with it. as I said dirty airfilter and had a scored cylinder wall on #3. it also kinda started to break up at the end on the graph. Due to bad airfilter? no tune with cam? you guess is as good as mine.
Are you sure those numbers are on your M52TUB25 Those torque numbers are really high...But those the curve looks great untill towards the end. You are running fairly lean, so a nice tune would probably clean that up.
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Old 12-16-2011, 03:15 PM   #30
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Are you sure those numbers are on your M52TUB25 Those torque numbers are really high...But those the curve looks great untill towards the end. You are running fairly lean, so a nice tune would probably clean that up.
Haha wouldn't that be nice. I bought it with 106k miles with a blown head gasket and the threads for the headbolts were stripped. So I time certed it, had the head milled and used a stock gasket putting it back together so it might have had a little extra compression but I don't think enough to make a difference. put the s52 camshaft in it and left everything else the same. The engine looked original and it had fairly low miles so I don't think it had been replaced with a 3.0 or 2.8 but who knows. Plus I think the person who sold it to me would have told me (would be a selling point you would think) but anythings possible. All I know for sure is the chassy was a 323i and it had m52tu intake manifold
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Old 12-16-2011, 03:46 PM   #31
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Thats fuked up
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Old 12-16-2011, 04:12 PM   #32
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Thats fuked up
???
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Old 12-16-2011, 06:46 PM   #33
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???
Thats youre able to obtain that from a 2.5 with the Issues you have.
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Old 12-16-2011, 07:22 PM   #34
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Is that a bad thing? I'm confused too...for comparison sake, I made 176whp with Intake, shark and fan delete.
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Old 12-16-2011, 09:08 PM   #35
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Not at all.
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Old 04-10-2013, 09:40 AM   #36
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Bump for cool thread
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Old 11-25-2013, 11:18 PM   #37
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ive been looking and the m52tu are closer to the m54 than they are to the m52/s52 series. also ive have come across a few threads that claim it is possible to place m54 camshafts into the m52tub28. if so how come many companies like vac make has seperate sets of camshafts, for the m52tu the ratio goes not further than 248\248 but the m54 camshafts goes all the way to 276\256
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