[lawwailok]

Originally Posted by Clap135

Are you a manual tranmission car and did you do it on flat road?

oh, mine is AT but figure if there's more power loss from the transmission, let's say another 10-15. wouldn't it still be a bit too high?

yes it was a flat road. outside temp was ~70F at night.

[Clap135]

Originally Posted by lawwailok

oh, mine is AT but figure if there's more power loss from the transmission, let's say another 10-15. wouldn't it still be a bit too high?

yes it was a flat road. outside temp was ~70F at night.

auto's have shorter gearing which will increase the hp. The readings are wrong as your ratios are different. I would expect another 30-40 lower once the proper settings for your transmission are inputted into the software.

Change 3.08 in the final drive to 3.46 and you will be witin 1% of where you should be. let me know the results and post the graph with smooth level 3-4

EDIT: Actually I just played around with it and you should be right around 300-310whp, seem a little low, however you are running the slowest map.

[dzenno]

As long as you log throttle, rpm and time and provide correct car data the dyno should really accurate...you can log all these channels with BT...

In terms of inflated numbers make sure you're doing a 3rd gear pull and then choose gear: 3 for the chart and most importantly that you're choosing the right transmission type, tire height and weight...if all of these aren't correct entered your numbers will be off for sure

[akotten]

Is the 6MT gearing different for the xi?

[Clap135]

Originally Posted by akotten

Is the 6MT gearing different for the xi?

No, all manuals and all autos have the same gearing/final drive

[lawwailok]

Originally Posted by Clap135

auto's have shorter gearing which will increase the hp. The readings are wrong as your ratios are different. I would expect another 30-40 lower once the proper settings for your transmission are inputted into the software.

Change 3.08 in the final drive to 3.46 and you will be witin 1% of where you should be. let me know the results and post the graph with smooth level 3-4

EDIT: Actually I just played around with it and you should be right around 300-310whp, seem a little low, however you are running the slowest map.

holy cow, it shows 282/299, what the heck! LOL

[Prince ///M]

I did something similar for some guys on this forum but, in order to get correct torque numbers on powerful cars, the high slip ratio of drive wheels at low speed must be considered. In our case torque (and so power) estimate with such a method are higher up to 10% 'till 4000-4500rpm. No major propbelms instead for peak power evaluation (pretty spot-on).

[Clap135]

I would start looking into whats wrong with the car lol. When you get a chance do another log, if the result is the same, you def have a problem somewhere.

[lawwailok]

Originally Posted by Clap135

I would start looking into whats wrong with the car lol. When you get a chance do another log, if the result is the same, you def have a problem somewhere.

lol, yea, i would definitely do another log either tonight or tmr in 3rd and see wht the result is.... LOL..... no doubt the car is making boost, feels strong... and i had another member here did the datalog dyno sheet for me, it came out 349whp/361wtq at his program....

[Prince ///M]

Originally Posted by lawwailok

lol, yea, i would definitely do another log either tonight or tmr in 3rd and see wht the result is.... LOL..... no doubt the car is making boost, feels strong... and i had another member here did the datalog dyno sheet for me, it came out 349whp/361wtq at his program....

At 12-12.5 psi of sustained boost (as shown on the graph) 290-300whp is IMHO the right power output (something like the 1M).

[Clap135]

Originally Posted by lawwailok

lol, yea, i would definitely do another log either tonight or tmr in 3rd and see wht the result is.... LOL..... no doubt the car is making boost, feels strong... and i had another member here did the datalog dyno sheet for me, it came out 349whp/361wtq at his program....

Nothing to do with the program though. The final drive ratio is 3.46. The weight is whatever is there plus your body weight and whatever you have in the car. 3rd gear. And imput your tire size

[lawwailok]

yea def i'll do another datalog...
just something came up in my mind... i should put it in stock map and do a stock pull, and then do a 91 map so at least i have a ball park of wht is the gain... and down the road (hopefully in a month or 2), kittyless is on call =)

[Mike@N54Tuning.com]

Pretty cool..

Mike

[Butters]

The program is set up for a manual transmission. The ratios for a manual are as follows:

3rd 1.54:1 to 3:08:1 = 4.74:1
4th 1.18:1 to 3.08:1 = 3.63:1

The steptronic has all different gear ratios including 3rd, 4th and final:
3rd 1.52:1 to 3.46:1 = 5.26:1
4th 1.14:1 to 3.46:1 = 3.94:1

The dyno system uses a fixed ratio based on the manual trans for 3rd and 4th (1.54 and 1.18, respectively) so I think you need to adjust the final ratio in the system to match the overall ratio of the auto trans if your run was with an automatic vehicle.

For a 3rd gear run with an auto, using 1.54:1 in the dyno program, you would need to set the final ratio to 3.415:1 to have an overall ratio equal to 5.26:1.

For a 4th gear run with an auto, using 1.18:1 in the dyno program, you would need to set the final ratio to 3.343:1 to have an overall ratio equal to 3:94:1

I think this is right, someone please verify.

Originally Posted by Clap135

auto's have shorter gearing which will increase the hp. The readings are wrong as your ratios are different. I would expect another 30-40 lower once the proper settings for your transmission are inputted into the software.

Change 3.08 in the final drive to 3.46 and you will be witin 1% of where you should be. let me know the results and post the graph with smooth level 3-4

EDIT: Actually I just played around with it and you should be right around 300-310whp, seem a little low, however you are running the slowest map.

[Clap135]

Originally Posted by Butters

The program is set up for a manual transmission. The ratios for a manual are as follows:

3rd 1.54:1 to 3:08:1 = 4.74:1
4th 1.18:1 to 3.08:1 = 3.63:1

The steptronic has all different gear ratios including 3rd, 4th and final:
3rd 1.52:1 to 3.46:1 = 5.26:1
4th 1.14:1 to 3.46:1 = 3.94:1

The dyno system uses a fixed ratio based on the manual trans for 3rd and 4th (1.54 and 1.18, respectively) so I think you need to adjust the final ratio in the system to match the overall ratio of the auto trans if your run was with an automatic vehicle.

For a 3rd gear run with an auto, using 1.54:1 in the dyno program, you would need to set the final ratio to 3.415:1 to have an overall ratio equal to 5.26:1.

For a 4th gear run with an auto, using 1.18:1 in the dyno program, you would need to set the final ratio to 3.343:1 to have an overall ratio equal to 3:94:1

I think this is right, someone please verify.

Use 3rd gear, change the FD to 3.46. The 3 gear ratios btwn auto and manual are so close it won't even make a difference. The rear end however is drastically different. 3.08 manual vs 3.46 auto so just change 3.08 to 3.46 and you are good.

[dzenno]

Here's a few more virtual dynos at various boost levels..i'll do a stock baseline map tomorrow...map1 on the jb4 and its wgdc with RBs pushes more boost than targeted (instead of 13.5 its hitting 14psi and not dropping to 9 but drops to 12psi) so closer to what map2 targets really

here it is, roughly in line hp wise with what was observed on a real dynojet back in March

[Bash]

Does this work on JB logs? Ive been trying it and its only showing 50hp lol WTF?

I have time,rpm and throttle with AFR and Boost in the logs.

[Bash]

Can someone send me the csv log that they are dropping into the virtual dyno, just to see if my file looks the same

[Irishace]

Going to give this a shot today, thanks for posting bro.

[Irishace]

Has anyone emailed the author the specifications for 135 MT and auto? So far only the 335 MT is available in the pick list when creating a profile.

[dfv2]

Feel free to compare to my freeware excel program (still working on it in alpha). My goal is to take these types of programs to the next level...

Supports most CSV datalogs with decent resolution. Excel 2007+ only.

Save to computer and RENAME from .PDF to .XLSM please!!!!

[Irishace]

Originally Posted by themyst

For those that don't know, the 135i has a 0.34 cd and the 335i (both e90/92) have 0.30.

Tech specs from BMW says e82 135i has a .32 drag coef.

"BMW 135i Coupe is a fixed-head coupe with 2 seats, rear wheel drive (RWD) and 2 doors. This model is presented in 2007. The automobile has the following dimensions: length - 4360.00 mm, height - 1408.00 mm, width - 1749.00 mm. Moreover, this model's wheelbase is 2661.00 mm, its front track is 1469.00 mm and its rear track is 1496.00 mm. 1559 kg is the curb weight.

The turbocharged engine of BMW 135i Coupe has a double overhead camshaft (DOHC), engine displacement of 2979 cc and 6 cylinders with 4 valves per cylinder. It is situated in the front of the vehicle and has a longitudinal alignment. Its cylinders are inline-arranged. The diameter of the cylinders is 84.00 mm and the length of the piston stroke is 89.60 mm. The pistons compression ratio is 10.20:1. The engine's maximum power is 225 kW / 306 ps at 5800 rpm and maximum torque is 400 Nm at 1300-5000 rpm. wet sump is the oiling system used for lubricating the engine's parts.

The vehicle can accelerate from 0 to 60 mph for 5.30 s. For 24.60 s the automobile can make one kilometer. This model has a 0.6720 m2 drag area, its drag coefficient is 0.32 and the frontal area is 2.1000 m2. The BMW 135i Coupe has a 6-speed manual transmission. The top gear ratio is 0.87:1. 3.08:1 is its final drive ratio. The urban fuel consumption of this automobile is 12.99 l/100 km, the combined fuel consumption is 9.16 l/100 km and the extra urban is 7.02 l/100 km. The fuel tank's capacity is 53.00 l. The rating of CO2 emissions is 220 g/km. The front wheels size is 7.5J x 18.

The rear wheels size is 8.5J x 18. The size/type of the front tyres is 215/40 R 18 85Y. The tyres in the rear are 245/35 R 18 88Y. The front brakes have with ventilated disks. The rear brakes are equipped with ventilated disks, servo assistance, anti-lock braking system (ABS). The diameter of the rear brakes is 324.00 mm and the one of the front brakes is 338.00 mm"