Starting my M54B30 swap...

[moatilliatta]

No BMW gas engine has EGR I'm aware of. This is thanks to the operation of the vanos :)

[hoveringuy]

You wont get as good of a swirl into the intake with ms3. The ms43 uses the idle valve for the first 1500 rpms. Then throttle takes over.

That's true.. and the S54 does the same, I believe. Those secondary ports are also used by the EGR.

That's relatively inconsequential and you're stuck with an electronic throttle.

[moatilliatta]

You wont get as good of a swirl into the intake with ms3. The ms43 uses the idle valve for the first 1500 rpms. Then throttle takes over.

[Elysian]

Keeping the disa valve? I do think the m54 is nice for turbo, esp as said the nice low tourqe curve. These motors drift off power up top so they IMO are perfect for a F.I. application (With some port work they should flow well up top too). Why do you not want to do MS43 management? They have steel sleves in them, They do appear to be about 1mm thick, again a plus for boost. I belive this motor is sposed to be ran with the factory dme unless your can mimic the idle control as the factory dme does. It will work with megasquirt but you dont gain the benifits of the intake desighn.

Check hoveringuy's blog on this...

http://m54megasquirt3.blogspot.com/

Also, I chopped the MS43 up and stole its case, plug, and ignitors for a breakout box for your swap.

[nando]

Keeping the disa valve? I do think the m54 is nice for turbo, esp as said the nice low tourqe curve. These motors drift off power up top so they IMO are perfect for a F.I. application (With some port work they should flow well up top too). Why do you not want to do MS43 management? They have steel sleves in them, They do appear to be about 1mm thick, again a plus for boost. I belive this motor is sposed to be ran with the factory dme unless your can mimic the idle control as the factory dme does. It will work with megasquirt but you dont gain the benifits of the intake desighn.

tuning the MS43, while possible, is going to be much, much harder than MS3. Unless you speak binary and hex..

[hoveringuy]

It will work with megasquirt but you dont gain the benifits of the intake desighn.

Huh? The intake works just fine with Megasquirt, DISA, VANOS and all!

[moatilliatta]

Keeping the disa valve? I do think the m54 is nice for turbo, esp as said the nice low tourqe curve. These motors drift off power up top so they IMO are perfect for a F.I. application (With some port work they should flow well up top too). Why do you not want to do MS43 management? They have steel sleves in them, They do appear to be about 1mm thick, again a plus for boost. I belive this motor is sposed to be ran with the factory dme unless your can mimic the idle control as the factory dme does. It will work with megasquirt but you dont gain the benifits of the intake desighn.

[Elysian]

Why are you choosing the M54 for boost as opposed to any of the 24v e36 engines?
I love the M54 as a light, all aluminum, smooth, efficient motor with around the power of an s50... but I don't see why someone would choose it over the other 24v engines for boost, besides to just do something different.

That answer is simple, I didn't have to pay for the engine My 01 330ci's subframe mounts tore out, the worst I or my mechanic have ever seen. I kept engine, trans, electric black leather sports seats and the center console stuff and donated the car to my mechanic (who then sold it to Vorshlag, it's the white 330 they're doing the LS1 swap in) in exchange for the custom exhaust on my swap and some other work.

[hoveringuy]

Why are you choosing the M54 for boost as opposed to any of the 24v e36 engines?
I love the M54 as a light, all aluminum, smooth, efficient motor with around the power of an s50... but I don't see why someone would choose it over the other 24v engines for boost, besides to just do something different.

When do the other motors start making boost? One thing the M54 is good for is making lots of low-rpm torque, so it would be good when it's off boost.

[VinniE30]

Management is Megasquirt 3X. Goals are to get it running first then start building the turbo setup. I don't think 400hp at the crank is out of the realm of possibility, especially with the snail I have.

Why are you choosing the M54 for boost as opposed to any of the 24v e36 engines?
I love the M54 as a light, all aluminum, smooth, efficient motor with around the power of an s50... but I don't see why someone would choose it over the other 24v engines for boost, besides to just do something different.

[Elysian]

Kinda excited to see how this hammers out. Thinking of an m54 my self. Read the thread a couple days ago. You should do a recap. Management and goals?

Management is Megasquirt 3X. Goals are to get it running first then start building the turbo setup. I don't think 400hp at the crank is out of the realm of possibility, especially with the snail I have.

[moatilliatta]

Kinda excited to see how this hammers out. Thinking of an m54 my self. Read the thread a couple days ago. You should do a recap. Management and goals?

[Elysian]

325iX booster got here today :D

[RobertK]

did you keep reading? it sounds like the coupler he had was a cheap chinese knockoff (yes, they exist, and yes, they suck).

the other guy reported that he got one directly from BMW and the quality was much better, and it also held up.

I was talked into one of those cheap chinese knock off guibos one time.. it lasted all of 4 months before my stock M20 tore it apart. I will post a picture of it compared to the Febi guibo I bought to replace it with. There is a visible difference in inner thickness of the rubber not to mention you can feel the difference in how soft the chiniese one is compared to the Febi.

BTW.. the annoying rattle is drivetrain vibration now being absorbed by the transmission and rear end of the car. If the Flex disc cannot bend the vibration and shock is just transferred elsewhere in your drivetrain. So it will likely just cause a more expensive part to fail. Anyone ever read the thread on Bf.c about the guy who had the custom solid delrin guibo made for his car and could not drive above 35mph because the needed flexibility went straight to his u-joints / center bearing causing insane vibration.

I would have no problem using an adaptable guibo like that if it could be designed out of vulcanized rubber or a soft flexible urethane. Even still I'd be sure the driveshaft in your car has good u joints and is perfectly balanced.

[Elysian]

What, you never saw a Ford released to the public?

Well, I've also owned enough BMW's to know better by now :crazy: