[justpete]

Originally Posted by _Ryan_

Have you and Hass considered using his definitions with the BB tool (or similar?) which is open source?

BB tool?

[hassmaschine]

What is the BB tool? Bavarian Technic? BT?

From what i hear, the BT tool can't flash custom files.

[e90ftw]

Originally Posted by hassmaschine

What is the BB tool? Bavarian Technic? BT?

From what i hear, the BT tool can't flash custom files.

Bavarian Technic cable, with Bimmer*Boost flash. It does checksum correction too!

[hassmaschine]

Ah i see. I think the cost is similar so no real difference i guess.

[_Ryan_]

Originally Posted by hassmaschine

Ah i see. I think the cost is similar so no real difference i guess.

Approx 40% less. Many owners already have a BT cable too.

Or-
The MHD flash uses the cheapo cable but is a licensed android app.

[hassmaschine]

MHD doesn't flash N52s and is charges for each "mod" to the DME. cool app though!

[Taskmaster]

Originally Posted by justpete

With just about a hundred grand in the car already this is in the noise. Besides, it's fun. For all I know the cams are not degreed correctly, too. And we're looking at that now.

Probably.

[_Ryan_]

Originally Posted by hassmaschine

MHD doesn't flash N52s and is charges for each "mod" to the DME. cool app though!

yuck.

[justpete]

Finally got BMWLogger working again and grabbed a quick bit of data.

Anybody want to look at this excel file and see what's going on, if anything?

Datalog_1May15_2.zip

[justpete]

self-explanatory

[hassmaschine]

Yeah, the cam timing definitely needs adjustment! It might take a couple rounds of adjustment/dyno to get it right.

Definitely start with the manufacturer's reccomended setting - but I'd err on the side of retarding it a bit more, because you can always advance it, but the stock tune already maxes out how retarded you can be and that's where you'll see top end gains.

[justpete]

Originally Posted by hassmaschine

Yeah, the cam timing definitely needs adjustment! It might take a couple rounds of adjustment/dyno to get it right.

Definitely start with the manufacturer's reccomended setting - but I'd err on the side of retarding it a bit more, because you can always advance it, but the stock tune already maxes out how retarded you can be and that's where you'll see top end gains.

You mean mechanically retarding the cam(s)?

[Taskmaster]

Originally Posted by justpete

You mean mechanically retarding the cam(s)?

I'm sure that's what he's saying. There is more room for using the DME to advance the cams, so installing them retarded a few degrees (since the current map settings have them maxed out) would allow for more top end power.

[justpete]

Originally Posted by TheAxiom

I'm sure that's what he's saying. There is more room for using the DME to advance the cams, so installing them retarded a few degrees (since the current map settings have them maxed out) would allow for more top end power.

Got it. I'm slow but I get there. Eventually. Thanks y'all.

[justpete]

Uploaded the wrong datalog file last time, sorry about that...

This one has the long idle and then wrapped up through the gears to about 70mph, probably a lot more useful.

datalog_1May15_3.zip

[chris82]

Originally Posted by justpete

self-explanatory

Attachment 1202369

Attachment 1202370

Wowww

[justpete]

Originally Posted by chris82

Wowww

Yeah but we know why now. Between mechanically retarding the intake cam and correcting the plant model parameters for the cams in the DME rom we'll see what it can really do. Science experiments are kinda like this...but they're still a pita. Come to think of it so are science experiments...

[_Ryan_]

Originally Posted by justpete

Yeah but we know why now. Between mechanically retarding the intake cam and correcting the plant model parameters for the cams in the DME rom we'll see what it can really do. Science experiments are kinda like this...but they're still a pita. Come to think of it so are science experiments...

The only reason your other cam installs weren't a PITA is because you weren't the pioneer

[Mike.]

For all you non math heads, Pete's car is about 290 at the crank before the cams

[justpete]

Originally Posted by _Ryan_

The only reason your other cam installs weren't a PITA is because you weren't the pioneer

Never did a cam install before, was talking about real science experiments.

[justpete]

Originally Posted by Mike.

For all you non math heads, Pete's car is about 290 at the crank before the cams

It's really about 270-275hp with an 80% driveline efficiency and 215-219hp at the rear wheel and we're expecting, eventually, a 10% increase so that'll take it to close to 300hp but it may be limited by other factors like the manifold design as hass as observed.

Sorry, misunderstood your pm earlier.

[Mike.]

Originally Posted by justpete

It's really about 270-275hp with an 80% driveline efficiency and 215-219hp at the rear wheel and we're expecting, eventually, a 10% increase so that'll take it to close to 300hp but it may be limited by other factors like the manifold design as hass as observed.

Sorry, misunderstood your pm earlier.

hm, Ill show you how I came up to that conclusion. Lets call it 217 at the wheels on a dynodynamic Well, they read 12% lower than d.jet
so 12%*217=26.04 which equals 243 whp on a dynojet.

Now driveline loss is around 20% so 20%*243=48.6

So the estimated crank HP is 243+48.6=291 hp

I could be totally off, but thats how I got my number ha