my first virtual dyno

Mantoine56 · 06-10-2013, 10:30 PM

Been doing my research on this virtual dyno software seems pretty legit. Uses ur logs to estimate ur hp and torque...people from evo communities swear by it so I figured I'd give it a try

2007 335i jb4 map5 downpipes and bms dci

Going to dyno my car on a real dynojet in the next few weeks so time will tell but I wanted to see what U guys think? Makes sense ?is it even close ?anyone tried this before?

enrita · 06-11-2013, 02:41 AM

boost building seems quite slow.

MasterWang · 06-11-2013, 03:01 AM

Wt: 1842?
Tire: 24.09?

Mantoine56 · 06-11-2013, 08:45 AM

Ya I had 2 passengers in the car ..the software asks for ur weight and ur passengers weight....and also asks for ur wheel and tire dimensions..as U can tell im still on my stock 17s

definitely wheels are my next mod tho

Jeff@TopGearSolutions · 06-11-2013, 09:33 AM

As long as as there is no wind and you are on a flat stretch of road that is repeatable it can be used.

I would suggest losing the passengers just to help with consistency.

I would expect about 375WHP from those mods and 380-390 TQ.

Bakeme521 · 06-11-2013, 09:37 AM

your not ur...pet peeve

Looks pretty sweet tho.

akotten · 06-11-2013, 09:38 AM

Quote:

Originally Posted by Mantoine56

Ya I had 2 passengers in the car ..the software asks for ur weight and ur passengers weight....and also asks for ur wheel and tire dimensions..as U can tell im still on my stock 17s

definitely wheels are my next mod tho

There is absolutely nothing wrong with 17's! They're lighter, and tires are cheaper. I love them.

Just find a set that are a little more attractive maybe.

Stan.mac · 06-11-2013, 09:41 AM

Maybe I'm looking at something wrong but to me it looks as if you're running a bit too lean from about 3800rpms on... But that seems to be the deal with guys running JB.

enrita · 06-11-2013, 11:38 AM

Quote:

Originally Posted by 0110001

Maybe I'm looking at something wrong but to me it looks as if you're running a bit too lean from about 3800rpms on... But that seems to be the deal with guys running JB.

thats not lean at all.

biz77 · 06-11-2013, 12:21 PM

The Subaru guys use virtual dynos quite often. If input variables are accurate and the road used is flat and bump-free, they can be very accurate. However, just like a real dyno, it is a tool. It's best used to see how changes you made to your car in hardware or tune parameters affected your power output.

MasterWang · 06-11-2013, 12:37 PM

I would try to get the weight as CLOSEST as possible.
If the car really weighed 1842kg(4060lbs) and was on a flat road with little wind.. I would say it should be pretty accurate!

I have Virtual Dynoed 3 logs with JB4, DCI, and 50% e85.
All 3 runs were back to back with about 5 minutes in between to let the car cool a bit.

They were all within 1-2hp and about 4-5tq.

Interested to see your VD to real Dynojet comparison. There have been a few of those comparisons done and they were very very close.

Stan.mac · 06-11-2013, 01:21 PM

Quote:

Originally Posted by enrita

thats not lean at all.

Ideal AFR is 12:1....

enrita · 06-11-2013, 01:39 PM

Quote:

Originally Posted by 0110001

Ideal AFR is 12:1....

so 11:1 is lean? look at the log again.

Tiago@VRSF · 06-12-2013, 11:31 AM

It there may be some confusion regarding scaling. The AFR is on the left

That boost curve looks a bit unusual considering these cars usually spool hard from the get go and die off in the upper RPM range. There's also quite a bit of room to lean out in mid-upper rpm range.

This is generally why I prefer flash tunes, you have quite a bit more control over the adjustments necessary on your vehicle to make the most power consistently.

Jeff@TopGearSolutions · 06-12-2013, 11:39 AM

The only area that is lean is anything under 3200 RPM.

11:1 AFR on a DI car is over-kill but safe.
11.5-12.1 AFR is what I'd hope to have in an ideal world for this platform.

deltalima0 · 06-12-2013, 12:30 PM

Quote:

Originally Posted by Mantoine56

Ya I had 2 passengers in the car ..the software asks for ur weight and ur passengers weight....and also asks for ur wheel and tire dimensions..as U can tell im still on my stock 17s

definitely wheels are my next mod tho

Not sure if this helps but this is from my FBO 07 6AT E90 HFS meth kit and 50/50 E85. Maybe give you an idea of what further mods and tweaking can give you.

These are 2 back to back pulls very consistent car feels super strong.

I am running JB4 G5 with Cobb back-end flash. I use to have a stutter between 3k-4k just on Cobb and PTF tune nothing against Cobb It got me into the high 11's at the 1/4 mile track but Jb4 back end flash fixed some nuances that I kept having i no longer throw codes going from 4th to 5th anymore and 5th gear felt like crap pulling in the higher RPM.

I am very happy I went JB4 back end flash.

I am not sure how accurate this is but car feels beastly.

FRMTL2_335i · 06-12-2013, 01:29 PM

Quote:

Originally Posted by deltalima0

Not sure if this helps but this is from my FBO 07 6AT E90 HFS meth kit and 50/50 E85. Maybe give you an idea of what further mods and tweaking can give you.

These are 2 back to back pulls very consistent car feels super strong.

I am running JB4 G5 with Cobb back-end flash. I use to have a stutter between 3k-4k just on Cobb and PTF tune nothing against Cobb It got me into the high 11's at the 1/4 mile track but Jb4 back end flash fixed some nuances that I kept having i no longer throw codes going from 4th to 5th anymore and 5th gear felt like crap pulling in the higher RPM.

I am very happy I went JB4 back end flash.

I am not sure how accurate this is but car feels beastly.

im making VERY SIMILAR POWER, no front mount yet but 75% e85 and no meth, ur torque is +10 over me but power is the same!

very nice

MasterWang · 06-12-2013, 02:57 PM

Here is mine for comparison.
G5 ISO, Injen DCI, 50% e85 (map5)

Big_Luss · 06-12-2013, 08:56 PM

Im on my way to try it to but what if i have a e90 335xi with sport package and staggered wheels... Witch tire diameter will i be entering in the VD ?? The 225/40/18 or the 255/35/18 ?? Thx everyone

themyst · 06-12-2013, 10:08 PM

Quote:

Originally Posted by Big_Luss

Im on my way to try it to but what if i have a e90 335xi with sport package and staggered wheels... Witch tire diameter will i be entering in the VD ?? The 225/40/18 or the 255/35/18 ?? Thx everyone

Your tire diameter should be 25.03.

Mantoine56 · 06-13-2013, 08:27 AM

In the software where you enter the tire diameter there's a blue button which will help you with that

nvn · 07-26-2013, 07:04 AM

Here's mine.

06-10-2013, 10:30 PM	#1
Mantoine56 Private 3 Rep 68 Posts Drives: 2007 e90 335i Join Date: May 2013 Location: Ottawa iTrader: (1)	my first virtual dyno Been doing my research on this virtual dyno software seems pretty legit. Uses ur logs to estimate ur hp and torque...people from evo communities swear by it so I figured I'd give it a try 2007 335i jb4 map5 downpipes and bms dci Going to dyno my car on a real dynojet in the next few weeks so time will tell but I wanted to see what U guys think? Makes sense ?is it even close ?anyone tried this before? Attached Images
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06-11-2013, 02:41 AM	#2
enrita Major General 161 Rep 7,377 Posts Drives: 335i - Big turbos Join Date: Sep 2008 Location: Italian in Sweden iTrader: (0)	boost building seems quite slow. __________________ 07 335i AT - MOTIV 750 - MHD E85 BMS flash - BMS PI - JB4G5 - Okada Coils - NGK 5992 Plugs - Helix IC - Snow Stg. 3 - Stett CP - Custom midpipes with 100 HJS Cats - Bastuck Quad - PSS10 - QUAIFE LSD - BMS OCC - Forge DVs - AR OC - ALCON BBK - M3 Chassi - Dinan CP - Velocity M rear Toe arms - Advan RZ-DF - LUX H8 - Level 10 AT upgrade
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06-11-2013, 03:01 AM	#3
MasterWang Captain 136 Rep 925 Posts Drives: F06 M6 Join Date: Jan 2011 Location: Overland Park, KS iTrader: (2)	Wt: 1842? Tire: 24.09?
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06-11-2013, 08:45 AM	#4
Mantoine56 Private 3 Rep 68 Posts Drives: 2007 e90 335i Join Date: May 2013 Location: Ottawa iTrader: (1)	Ya I had 2 passengers in the car ..the software asks for ur weight and ur passengers weight....and also asks for ur wheel and tire dimensions..as U can tell im still on my stock 17s definitely wheels are my next mod tho
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06-11-2013, 09:33 AM	#5
Jeff@TopGearSolutions 3441 Rep 79,211 Posts Drives: C6 Z06, 09 335i, 10 335xi Join Date: Dec 2008 Location: www.TopGearSolutions.com iTrader: (37)	As long as as there is no wind and you are on a flat stretch of road that is repeatable it can be used. I would suggest losing the passengers just to help with consistency. I would expect about 375WHP from those mods and 380-390 TQ.
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06-11-2013, 09:37 AM	#6
Bakeme521 Some say... 239 Rep 4,296 Posts Drives: Fresh Join Date: Mar 2010 Location: Baton Rouge n NOLA iTrader: (12) Garage List 2007 BMW 335i [8.24]	your not ur...pet peeve Looks pretty sweet tho. __________________ I have exhaust and an intake...
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06-11-2013, 09:41 AM	#8
Stan.mac Second Lieutenant 9 Rep 296 Posts Drives: 135i M-Sport Join Date: Aug 2012 Location: NoVA iTrader: (3)	Maybe I'm looking at something wrong but to me it looks as if you're running a bit too lean from about 3800rpms on... But that seems to be the deal with guys running JB. __________________ "I live my life a quarter mile at a time. Nothing else matters: not the mortgage, not the store, not my team and all their bullshit. For those ten seconds or less, I'm free." afe DCI/Greddy Oil Catch Can/Catless DP/ Cobb Stage 2+/Berk Axle-Back(Race)/AAW CP w BOV/H&R Springs/ ALPINA Flash/Helix FMIC/
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06-11-2013, 12:21 PM	#10
biz77 Captain 174 Rep 614 Posts Drives: 2021 X3 M40i Join Date: Aug 2010 Location: Spokane, WA iTrader: (4)	The Subaru guys use virtual dynos quite often. If input variables are accurate and the road used is flat and bump-free, they can be very accurate. However, just like a real dyno, it is a tool. It's best used to see how changes you made to your car in hardware or tune parameters affected your power output.
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06-11-2013, 12:37 PM	#11
MasterWang Captain 136 Rep 925 Posts Drives: F06 M6 Join Date: Jan 2011 Location: Overland Park, KS iTrader: (2)	I would try to get the weight as CLOSEST as possible. If the car really weighed 1842kg(4060lbs) and was on a flat road with little wind.. I would say it should be pretty accurate! I have Virtual Dynoed 3 logs with JB4, DCI, and 50% e85. All 3 runs were back to back with about 5 minutes in between to let the car cool a bit. They were all within 1-2hp and about 4-5tq. Interested to see your VD to real Dynojet comparison. There have been a few of those comparisons done and they were very very close.
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06-12-2013, 11:31 AM	#14
Tiago@VRSF 2095 Rep 43,350 Posts Drives: F90 M5 Join Date: Dec 2007 Location: Doral, FL iTrader: (99) Garage List 2014 F30 328xi [0.00] 2015 F82 BMW M4 [0.00] 2013 Ducati 1199 Pa ... [0.00] 2008 BMW 335i [0.00]	It there may be some confusion regarding scaling. The AFR is on the left That boost curve looks a bit unusual considering these cars usually spool hard from the get go and die off in the upper RPM range. There's also quite a bit of room to lean out in mid-upper rpm range. This is generally why I prefer flash tunes, you have quite a bit more control over the adjustments necessary on your vehicle to make the most power consistently.
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06-12-2013, 11:39 AM	#15
Jeff@TopGearSolutions 3441 Rep 79,211 Posts Drives: C6 Z06, 09 335i, 10 335xi Join Date: Dec 2008 Location: www.TopGearSolutions.com iTrader: (37)	The only area that is lean is anything under 3200 RPM. 11:1 AFR on a DI car is over-kill but safe. 11.5-12.1 AFR is what I'd hope to have in an ideal world for this platform.
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06-12-2013, 02:57 PM	#18
MasterWang Captain 136 Rep 925 Posts Drives: F06 M6 Join Date: Jan 2011 Location: Overland Park, KS iTrader: (2)	Here is mine for comparison. G5 ISO, Injen DCI, 50% e85 (map5) Attached Images
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06-12-2013, 08:56 PM	#19
Big_Luss New Member 2 Rep 15 Posts Drives: 2008 335xi Join Date: Sep 2012 Location: Quebec iTrader: (0)	Im on my way to try it to but what if i have a e90 335xi with sport package and staggered wheels... Witch tire diameter will i be entering in the VD ?? The 225/40/18 or the 255/35/18 ?? Thx everyone
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06-13-2013, 08:27 AM	#21
Mantoine56 Private 3 Rep 68 Posts Drives: 2007 e90 335i Join Date: May 2013 Location: Ottawa iTrader: (1)	In the software where you enter the tire diameter there's a blue button which will help you with that
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07-26-2013, 07:04 AM	#22
nvn Second Lieutenant 23 Rep 229 Posts Drives: 2013 335is E93 Join Date: Mar 2013 Location: San Diego, CA iTrader: (3) Garage List 2007 BMW 335i E92 [0.00]	Here's mine.
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