Dyno: FBO E92 M3 + BPM Stage 2

[MFL]

Also, I want the Dinan because I hate drone and it has quad resonators.

[Brian0473]

Excellent vids and very nice results with your mods. Would be interesting to see a FBO vs. something like an ESS625-650 just to see the difference. Thanks for sharing!

[MFL]

I ran a G Power DCT M3 and it was noticeably quicker. If we were going to 150-160 all of the SC M3's would have started pulling away more.

[MFL]

So, I did some crunching on why my car came so close to this ESS SC'd M3.

Observe:
BMW M3 DCT
Gear / Ratio / Max Speed / RPM drop on upshift
1st 4.780 44
2nd 2.933 71 5200
3rd 2.153 97 6200
4th 1.678 124 6500
5th 1.390 150 6900
6th 1.203 173 7300
7th 1.000 208 7000
Final Ratio 3.154
Redline 8400

BMW M3 6-speed
Gear / Ratio / Max Speed / RPM drop on upshift
1st 4.055 44
2nd 2.396 75 4900
3rd 1.582 113 5600
4th 1.192 150 6300
5th 1.000 179 7000
6th 0.872 205 7300
Final Ratio 3.678
Redline 8400

I've pretty much concluded that if he had a shorter gears (like a 3.91+), he would have pulled much more. In 2nd gear, my car is more in our power band and I have a distinct gearing advantage. When I upshift, I stay in more of our powerband. Then once he's into 4th gear he starts pulling as his upshift has him in more of his power band and he's making more boost than previous upshifts.

Benvo is absolutely right about going up to 8,600 RPM's, there is more to get out of these cars.

I've been kind of balls to the wall about getting a SC, now I'm wondering what I can do with some serious weight reduction (my car...and ME ) and some higher end bolt ons.

[Hujan]

Originally Posted by MFL

So, I did some crunching on why my car came so close to this ESS SC'd M3.

Observe:
BMW M3 DCT
Gear / Ratio / Max Speed / RPM drop on upshift
1st 4.780 44
2nd 2.933 71 5200
3rd 2.153 97 6200
4th 1.678 124 6500
5th 1.390 150 6900
6th 1.203 173 7300
7th 1.000 208 7000
Final Ratio 3.154
Redline 8400

BMW M3 6-speed
Gear / Ratio / Max Speed / RPM drop on upshift
1st 4.055 44
2nd 2.396 75 4900
3rd 1.582 113 5600
4th 1.192 150 6300
5th 1.000 179 7000
6th 0.872 205 7300
Final Ratio 3.678
Redline 8400

I've pretty much concluded that if he had a shorter gears (like a 3.91+), he would have pulled much more. In 2nd gear, my car is more in our power band and I have a distinct gearing advantage. When I upshift, I stay in more of our powerband. Then once he's into 4th gear he starts pulling as his upshift has him in more of his power band and he's making more boost than previous upshifts.

Benvo is absolutely right about going up to 8,600 RPM's, there is more to get out of these cars.

I've been kind of balls to the wall about getting a SC, now I'm wondering what I can do with some serious weight reduction (my car...and ME ) and some higher end bolt ons.

I feel the same way. It's tempting to just throw a 550 kit on there, but I want to stay NA if at all possible. Curious to hear what you have in mind with both the bolt-ons and weight reduction.

I figure I've shed at least 80 lbs. with the Akra, Brembos, and Ohlins. Next level would probably be some lighter wheels, battery, maybe a trunk and seats. That might get me another 80 lbs. A CF driveshaft would have dual benefits.

I weigh 150, so not much more to shed there.

[Verify]

so S/C car is 6MT and N/A car is DCT?

[MFL]

Yep!

[MFL]

Hence the paddle shifters XD

[TMiller]

Originally Posted by MFL

Both runs runs are on 30% Ethanol.

Thanks for your testing and sharing the info!

[Dave07997S]

Originally Posted by MFL

So, I did some crunching on why my car came so close to this ESS SC'd M3.

Observe:
BMW M3 DCT
Gear / Ratio / Max Speed / RPM drop on upshift
1st 4.780 44
2nd 2.933 71 5200
3rd 2.153 97 6200
4th 1.678 124 6500
5th 1.390 150 6900
6th 1.203 173 7300
7th 1.000 208 7000
Final Ratio 3.154
Redline 8400

BMW M3 6-speed
Gear / Ratio / Max Speed / RPM drop on upshift
1st 4.055 44
2nd 2.396 75 4900
3rd 1.582 113 5600
4th 1.192 150 6300
5th 1.000 179 7000
6th 0.872 205 7300
Final Ratio 3.678
Redline 8400

I've pretty much concluded that if he had a shorter gears (like a 3.91+), he would have pulled much more. In 2nd gear, my car is more in our power band and I have a distinct gearing advantage. When I upshift, I stay in more of our powerband. Then once he's into 4th gear he starts pulling as his upshift has him in more of his power band and he's making more boost than previous upshifts.

Benvo is absolutely right about going up to 8,600 RPM's, there is more to get out of these cars.

I've been kind of balls to the wall about getting a SC, now I'm wondering what I can do with some serious weight reduction (my car...and ME ) and some higher end bolt ons.

I believe the 6MTs final driver ratio is a 3:85:1.

Dave

[MFL]

Originally Posted by Dave07997S

I believe the 6MTs final driver ratio is a 3:85:1.

Dave

Hmmm,

I've read that before as well. I was just basing it off of the post from above.

I'll bust out the diffsonline spreadsheet later to see what's what.

[Patrón]

so a proper dyno should be in 7th?
yikes.

[MFL]

No one dyno's these cars in 7th.

[dereksM3]

I've heard most dyno the 6MT in 4th or 5th and the DCT in 5th or 6th. I'd be curious for some input on this as I know the higher gear or "closer" you are to 1:1 you achieve more accurate numbers (sometimes higher). Wonder what EAS does since 90% of the graphs floating around seem to be from them.

[Longboarder]

Originally Posted by Brian0473

Excellent vids and very nice results with your mods. Would be interesting to see a FBO vs. something like an ESS625-650 just to see the difference. Thanks for sharing!

I ran a FBO M3 once at the airstrip. I basically eased into the throttle not going WOT until I hit third gear. I was only OT for about 8 seconds and then let off. See the race at the 3:45 mark.

[MFL]

http://www.m3post.com/forums/showthread.php?t=198443

6MT

1st: 4.055:1
2nd: 2.369:1
3rd: 1.582:1
4th: 1.192:1
5th: 1.000:1
6th: 0.872:1

Final Drive: 3.846:1

3.85 looks to be the winner. So maybe they need even shorter gears than 3.91's to offset the difference. I have a buddy that is doing much shorter gears than 4.10's, i'll see if he wants to contribute anything.

[jagman]

Are any mods necessary to add 4 gallons of E85 to an otherwise full tank of regular 91 octane gas? I ask because it routinely gets above 90' F (if not 100') where I live, 93 is not available (CA), but 91 and E85 are just down the street.

[MFL]

Originally Posted by Longboarder

I ran a FBO M3 once at the airstrip. I basically eased into the throttle not going WOT until I hit third gear. I was only OT for about 8 seconds and then let off. See the race at the 3:45 mark.

Was he DCT or 6MT?

Who claims crank HP? LOL.

Are you going this year? I may take a jaunt down there.

[jagman]

Can E85 harm the engine?

[MFL]

Originally Posted by jagman

Can E85 harm the engine?

E in E85 stands for percentage of ethanol.

Ethanol is in most fuels these days, most often the fuel we run is E10 (at least in washington).

I've done a lot of proving that this car can operate with up to 30% ethanol. I spent two days at the track and the car runs like a champ.

I have a feeling that anything over 30% is going to max out your DC's on your injectors though, hence why it will go into limp mode.

Chances are, if you're asking this question, you need to do a bit more research.

[jagman]

Yes... I definitely need to do more research!

[MFL]

Originally Posted by jagman

Yes... I definitely need to do more research!

There's another post detailing this etc.

I've probably logged over 1k miles with it, I've dyno'd multiple times without issue and I've literally bet the ever loving fuck out of my car while on 30% Ethanol.

So far, So good.