[dzenno]

http://www.bradbarnhill.com/projects/VirtualDyno/

Supports the Cobb and JB4 logs so far...i googled the specs for the 2008 E90 335i 6 speed manual and provided them over to Brad (creator of Virtual Dyno)..he turned it around VERY fast, adding the car's profile into the software and supporting the logs out of Cobb and JB4...go ahead and send him your procede or whatever else tune you can log with and he'll add it to his database so you can just do a 3rd gear run, log it, drop the csv into the software and see where the car stands power/torque wise...its pretty damn accurate too and fairly well respected in other online communities already...

I'll be posting a bunch of virtual dynos here in this thread over the next few days running both Cobb and the recently acquired JB4 which I'm using to run more top end boost and progressive meth on RBs while waiting for Cobb's stage 3 release...

You're welcome to post your virtual dynos here as well and maybe we can turn this into a sticky if it turns out well...no results are too low so don't be shy

P.S. If you don't see your car in the list of profiles just google the specs on your car and send it to Brad Barnhill at:

bradbarnhill at hotmail dot com

with the following mandatory info on your car (below is an example for my 2008 335i E90 6 speed manual with 275/30/19 rear tires...). You'll need to get the exact numbers (google them) for frontal area, drag coefficient, gear ratios in order for the software to be as correct as possible, estimates aren't good enough:

<CarMake>BMW</CarMake>
<CarModel>E90</CarModel>
<CarSubModel>335i N54</CarSubModel>
<StartYear>2007</StartYear>
<EndYear>2010</EndYear>
<Weight>3549</Weight>
<TransTypeManual>true</TransTypeManual>
<TransGear3>1.582</TransGear3>
<TransGear4>1.192</TransGear4>
<FinalGearRatio>3.08</FinalGearRatio>
<DragCoefficient>0.30</DragCoefficient>
<FrontalArea>23.36</FrontalArea>
<TireDiameter>25.5</TireDiameter>

[dzenno]

Here's my virtual dyno on JB4 last night running about 15psi, no CPS, on pump gas and 80/20 meth



Now compare that with the run that was done on RBs with 75/25 meth in pretty much same conditions inside the dyno shop back in March. The car was running the Procede V5 with about the same boost and also no CPS. This Dynojet (Champion Motors) is well known to the N54 community in the Toronto, Canada area and many of us have tons of dynos from the place so its 100% legit.



More to follow...i love this tool!

[Q4P]

Real Cool!

[Clap135]

glad more people are starting to use this.

[vasillalov]

Very cool! Subscribed!

[pentaxis]

Torque what?! Seems peak torque is probably a little high with the virtual dyno?

[themyst]

Dzenno, can you please overlay your dyno graph from the jb to your Cobb? I want to see the top end power difference.

[dzenno]

Originally Posted by themyst

Dzenno, can you please overlay your dyno graph from the jb to your Cobb? I want to see the top end power difference.

As soon as I get a less experimental map I'll run it starting low RPM...if you'd like to look at something, Clap posted a run from my car on an experimental version of the stage2/3 map but I would take that with a grain of salt a bit as its not the stage 2 map that clap is running and I think he didn't account for the difference in the cars' weight (he's got a 135, I've got an E90)..should be close though

What I'm planning to use this for specifically is see how given the same timing curve (stock in this case), raising boost past 5500rpm on RBs affects top end performance and where a point of diminishing returns is with the RBs up top...no point holding 20psi to redline if you're pushing the same power as with 13psi at redline as it just creates more heat and chance of detonation and takes an unnecessary toll on the turbos...will be interesting to compare for sure

[Clap135]

Originally Posted by dzenno

As soon as I get a less experimental map I'll run it starting low RPM...if you'd like to look at something, Clap posted a run from my car on an experimental version of the stage2/3 map but I would take that with a grain of salt a bit as its not the stage 2 map that clap is running and I think he didn't account for the difference in the cars' weight (he's got a 135, I've got an E90)..should be close though

What I'm planning to use this for specifically is see how given the same timing curve (stock in this case), raising boost past 5500rpm on RBs affects top end performance and where a point of diminishing returns is with the RBs up top...no point holding 20psi to redline if you're pushing the same power as with 13psi at redline as it just creates more heat and chance of detonation and takes an unnecessary toll on the turbos...will be interesting to compare for sure

I low balled the weight. When at the track the scales read 3620 with me in it and random non work related stuff in the car.

Car is 3380, i am 250, I have about 100lbs of crap int he car (all work gear related. So I low balled and said the car was 3680ish

[rooringhusky]

This is really nice for those who cant always afford Dynos and/or just want a rough estimate on their cars power!

Great work and great idea to open a new thread...Thanks dzenno! Hope I can try this soon..

[dzenno]

Originally Posted by Clap135

I low balled the weight. When at the track the scales read 3620 with me in it and random non work related stuff in the car.

Car is 3380, i am 250, I have about 100lbs of crap int he car (all work gear related. So I low balled and said the car was 3680ish

No no, I know..i'm just saying my E90 is 3600lbs, I'm 220lbs and I had 2 295/30/19 tires on the back (one in the trunk, one in the back seat ) awaiting installation tomorrow, as well as 3 extra gallons of meth behind the back seat...so in total about 3900lbs...the only weight saving mod is my new CF trunk but that's like 15lbs...i wanted to say that you indicating 3680lbs for the run on my car was ~200lbs less than what the car really weighed for that run

[dzenno]

Originally Posted by rooringhusky

This is really nice for those who cant always afford Dynos and/or just want a rough estimate on their cars power!

Great work and great idea to open a new thread...Thanks dzenno! Hope I can try this soon..

Tons of things can be tested with this actually...finally we can see the effect of various intakes on this car for example as they're being tested "ON" the road in real conditions...another example is weight saving mods and how they impact it as well...many many things...wish hotrod182 picks up on it as well, we'd have TONS of data

[Clap135]

Just finished a pull on my beta map. This is as legit from a logging standpoint as its going to get. Flat road, no major bumps/dips. Started under 3k, reved it out to 7k. Looks pretty spot for a n54 dynojet curve.

[themyst]

Originally Posted by Clap135

I low balled the weight. When at the track the scales read 3620 with me in it and random non work related stuff in the car.

Car is 3380, i am 250, I have about 100lbs of crap int he car (all work gear related. So I low balled and said the car was 3680ish

Although you and I have already discussed this, can you please detail how modifying cam angles can allow for the same power up top on less boost? Especially since you said the piggybacks can't do this, presumably due to the fact modifying cam angles isn't possible by hijacking the DME.

[Clap135]

Originally Posted by dzenno

No no, I know..i'm just saying my E90 is 3600lbs, I'm 220lbs and I had 2 295/30/19 tires on the back (one in the trunk, one in the back seat ) awaiting installation tomorrow, as well as 3 extra gallons of meth behind the back seat...so in total about 3900lbs...the only weight saving mod is my new CF trunk but that's like 15lbs...i wanted to say that you indicating 3680lbs for the run on my car was ~200lbs less than what the car really weighed for that run

I think 3680 was my weight of hte 135 loaded up. Im not sure what I put you in as, I think it was in the 3700 range though. Either way the heavier your car, the more your going to dyno assumping its realistic and not inflated weight.

[dzenno]

Originally Posted by themyst

Although you and I have already discussed this, can you please detail how modifying cam angles can allow for the same power up top on less boost? Especially since you said the piggybacks can't do this.

A different thread for that please..

Clap, that graph looks great man...let's get everyone to contribute to this as its so dead easy

[themyst]

Dzenno, you're 100% right, sorry. Back on topic, a real world 400whp on pump gas is happening. I can't wait for stage 2...

[Clap135]

Originally Posted by themyst

Although you and I have already discussed this, can you please detail how modifying cam angles can allow for the same power up top on less boost? Especially since you said the piggybacks can't do this, presumably due to the fact modifying cam angles isn't possible by hijacking the DME.

I already told you how. Think of NA engines, esp hondas, they make all their power by altering cam angles. Theres more to power then boost/timing, this community just hasnt seen that aspect yet.

[dzenno]

Originally Posted by Clap135

I think 3680 was my weight of hte 135 loaded up. Im not sure what I put you in as, I think it was in the 3700 range though. Either way the heavier your car, the more your going to dyno assumping its realistic and not inflated weight.

I've actually been trying to get my car weighed 2-3 times already but I can't seem to go at a good time to the the damn truck scale that's close by to my place...whenever I went there was no one there, its pretty ghetto

[dzenno]

Originally Posted by Clap135

I already told you how. Think of NA engines, esp hondas, they make all their power by altering cam angles. Theres more to power then boost/timing, this community just hasnt seen that aspect yet.

+1

One of the cool things that Cobb is actually doing with this the stage 2 map is some VANOS tuning as well...

[themyst]

Figure my e90 weighs 3600, I weigh 190, the crap in my trunk weighs 40 lbs, so would I put in 3830?

[Q4P]

Originally Posted by Clap135

I already told you how. Think of NA engines, esp hondas, they make all their power by altering cam angles. Theres more to power then boost/timing, this community just hasnt seen that aspect yet.

better question... why does no one make aftermarket cams for the N54? Or if they do, why does no one use them - are ours as good/efficient as it gets?

Sorry for the