M54 Madness, the remix

[digger]

for reduced noise just add a muffler or resonator (or additional ones) with longer length and fatter body (more volume)

[ForcedFirebird]

for reduced noise just add a muffler or resonator (or additional ones) with longer length and fatter body (more volume)

I find that changes note more than anything. Best thing to do is add a j-pipe (Helmholtz chamber) to cancel that noise, leave the rest of the exhaust alone. Drive around and see what RPM the drone is worst, do a little math, and a tee with a curved pipe can be done at your local exhaust shop if you don't have access to a welder. This won't change the sound much from outside the car, but cabin frequencies will be cancelled.

[hoveringuy]

Problem is, it's louder everywhere. It feels like the gauge on the headers is thinner and they just make a lot of noise.

Once Tyler gets his shop back online I'll have him fit my OBD2 headers and down pipes. It's a little bit of a step back but I know they'll be civilized and that's what I'm after now.

[TheAxiom]

Problem is, it's louder everywhere. It feels like the gauge on the headers is thinner and they just make a lot of noise.

Once Tyler gets his shop back online I'll have him fit my OBD2 headers and down pipes. It's a little bit of a step back but I know they'll be civilized and that's what I'm after now.

Why not ebay headers?

[digger]

and what happened to the euros?

[butters]

Why not ebay headers?

I'd venture to say that the experience will be the same. eBay headers are typically similar to, if not directly copying, the Racelands. Thin-wall tube that tends to be noisy as hell - that was my experience too, and my S50 turned out still pretty dang loud after adding an x-pipe, dual cats, dual resonators, and then changing to the claimed quietest-aftermarket Dinan muffler.

[TheAxiom]

I'd venture to say that the experience will be the same. eBay headers are typically similar to, if not directly copying, the Racelands. Thin-wall tube that tends to be noisy as hell - that was my experience too, and my S50 turned out still pretty dang loud after adding an x-pipe, dual cats, dual resonators, and then changing to the claimed quietest-aftermarket Dinan muffler.

I made good power with mine and I don't remember them being that much louder than stock (on stock exhaust)

[butters]

I made good power with mine and I don't remember them being that much louder than stock (on stock exhaust)

Stock exhaust might be the key there.

[Ahmedsinc]

Any chance of posting your MSQs?

[hoveringuy]

Any chance of posting your MSQs?

send me a PM with your email and I'll send one to you.

[bmwmaster81]

Hi,

i want to use the M5430 with Ecumaster EMU ECU. Has anyone maybe an pinout from the original MS43 ECU?
I can't find a goog one.

[digger]

Hi,

i want to use the M5430 with Ecumaster EMU ECU. Has anyone maybe an pinout from the original MS43 ECU?
I can't find a goog one.

email Rama at http://racehead.com.au/

[mike25]

Any Dyno news?

[Jaker]

Ya! What's up with the build?

[hoveringuy]

Any Dyno news?

Yes, sort of.

The short answer is 230hp at 6000rpm. I still have a rev limit that I can't get rid of. Somehow it got stuck at 6000 and wouldn't change to 7200.

My intake cam is also retarded 6 degrees in static timing and the VANOS seals are weak, torque wasn't that strong down low.

Once I get everything sorted still looking for at least 240.