E46 Dyno Thread

Originally Posted by stosh1

Hmmm, yeah, your numbers do seem a bit on the low side w/those mods...as I would expect somewhere around 290ish w/o software. Your AFR #'s look decent as well, although the scaling makes it a little difficult to read, and certainly not off enough to cause any serious reduction in power. I'm sure that your car would still respond to software though w/more optimized ignition and cam timing values. Could also be a very low reading Dynojet...yes, they are out there!

Also, you might want to do a full compression/leakdown test just to confirm the general health of the motor.

Yeah, that's next. I guess I should do it before the software.

Originally Posted by Iceman00

It's probably a combination of the engine pulling timing and needing a valve adjustment (espcially if you drive it a bit harder than most)

The previous owner did a valve adjustment, then I had one done not long ago and only a few of them needed adjusting. I do drive hard though. It's had probably 5 full track days since the adjustment.

Originally Posted by stosh1

Meh, could be, but the graph will usually spike a little bit (or a lot in some cases) when timing is being pulled and his curve looks pretty smooth. I believe that he also said that the temps were on the cool side, which would help fight off detonation/prevent timing from being pulled.

Yes, ambient temp was plenty cool. My fuel was all fresh 93 octane from BP.

Ice Man you got a PM. Need your help with my dyno runfiles

Name: Flashtwosix
Car/Engine E46 323i w/ M54B30 ZHP Engine running on MS42 328 Tune (90,000 miles). ZF Automatic Transmission
Mods: Shark, AFE CAI, Technik Gen2 Headers, Rogue Engineering Under Drive Pullies, UUC TSE3 exhaust, Plasma Ignition Coils, Shark Injector
Dyno type: Dyno Jet
Peak numbers: 199HP /197 Ft/Lbs

Originally Posted by flashtwosix

Peak numbers: 199HP /197 Ft/Lbs

Very healthy numbers for an M54 on a M42 DME with an automatic.

The curve of the graph doesn't look like the computer is getting too screwed up and pulling crazy timing in places or anything like that either.

flashtwosix if you had a 3.0l tune imagine how much hp you would pick up, or is is not supported on ms42?

Originally Posted by Steven747

flashtwosix if you had a 3.0l tune imagine how much hp you would pick up, or is is not supported on ms42?

I know huh? I can't flash my ms42 for the 330 tune. However, updating my entire car to ms43 is a long term goal of mine though

sent from my dahc-6900 using Bimmer App

Did you get my PM?

Originally Posted by Iceman00

Did you get my PM?

Yes sir. I will send them to u after work

sent from my dahc-6900 using Bimmer App

Originally Posted by jared_wiesner

Very healthy numbers for an M54 on a M42 DME with an automatic.

The curve of the graph doesn't look like the computer is getting too screwed up and pulling crazy timing in places or anything like that either.

thank you for the assurance. my biggest concern was timing issue also.

Originally Posted by Iceman00

Did you get my PM?

e-mail sent. Feel free to keep and use the run files for your archives

I did the math, the numbers on the screen are incorrect and are likely do to the spike at the beginning of the dyno. Torque = (5252*hp) / RPM.

FYI, those numbers are EXTREMELY healthy, and about 20whp down on a manual counterpart. I don't think there is too much to be gained by changing the software, the biggest losses are do to drivetrain.

Iceman, that is why u t the expert. Thanks

sent from my dahc-6900 using Bimmer App

Iceman, do you see a consistent drop in power between summer and winter blended fuel? I may have dynoed with winter fuel and that could partially explain my numbers.

Originally Posted by Andy2108

Iceman, do you see a consistent drop in power between summer and winter blended fuel? I may have dynoed with winter fuel and that could partially explain my numbers.

I've never heard seen anything of the sort. Do we know the dates when the blends are specifically changed? I've taken dynos year round, and it has been fairly consistant.

Originally Posted by Iceman00

I've never heard seen anything of the sort. Do we know the dates when the blends are specifically changed? I've taken dynos year round, and it has been fairly consistant.

If you live in Florida then I doubt you run a winter fuel...

I asked my buddy at the gas station and he said that they switched a few months ago. He mentioned something about switching between 7lb and 9lb fuel (per gallon).

I live in Kansas.

As someone who lives in Canada, yes, winter fuel will hurt power output. Most winter fuels are "winter fuel" because their ethanol content has been bumped up close to the maximum allowable. This is to help prevent freezing in the gas line. Iceman likely hasn't had to deal with this living in Florida, I'm talking -5 F and colder temps being a concern. I deal all winter with people coming into our dealership complaining of poor mileage compared to their summer mileage. Between the slush on the roads and the fuel it's to be expected. That being said, you'd might still make more ultimate power on a dyno because you won't have to worry about heat soak. I tend to notice my car feels the fastest in the spring and fall when temps are cooler and I'm not using winter gas.

Originally Posted by jared_wiesner

As someone who lives in Canada, yes, winter fuel will hurt power output. Most winter fuels are "winter fuel" because their ethanol content has been bumped up close to the maximum allowable. This is to help prevent freezing in the gas line. Iceman likely hasn't had to deal with this living in Florida, I'm talking -5 F and colder temps being a concern. I deal all winter with people coming into our dealership complaining of poor mileage compared to their summer mileage. Between the slush on the roads and the fuel it's to be expected. That being said, you'd might still make more ultimate power on a dyno because you won't have to worry about heat soak. I tend to notice my car feels the fastest in the spring and fall when temps are cooler and I'm not using winter gas.

Yeah I was thinking something along the lines of this.

What's up everybody!? Alright, thought we'd give it one more go on the dyno just for good measure...before I tear it back down again. We pulled a little more fuel up top and played around w/the timing a little bit too, and well...I think the results speak for themselves!?!? We managed to eek out a few more ponies, and torque is now up to 275ft lbs. The car is making 300HP by around 6,000ish rpms and then hitting 360+HP @ 7,700rpms and holding it all the way to 8,500rpms. The car is running very, very well!

Holy S hit! Those numbers are fantastic for a N/A M3!

Tempted to follow?

Originally Posted by Hornung418

Holy S hit! Those numbers are fantastic for a N/A M3!

Thank you sir!

Originally Posted by Stinger9

Tempted to follow?

Do it, no regrets!