In general I don't want excuses. I want results...
That's why I go with Todd.
Over time I hope you get what you expected.

 

It's just the resolution for the AF plot is too high....

 

I have already set the timing and other attributes of the flash at known settings. These are certain parameters that the DME would have to operate by. I would like to look at these first to check if they line up with the tables that they were set for. This is much the same way TRA's and RKATS are used to look at the AFR's in their trims.

A flash is made up of known data while each car has its unknown variables.

Porsche may make 4 files for a given year car yet the dyno results would be endless on these 4 flashes worldwide.


Best,
Scott

 

I second that dan would help you out

 

Any updates on your problem?

 

Torresmd, thanks for asking. In fact, I just picked up the car from Weissach, a local porsche dealer and tuner, for a complete compression and leak down test. The good news is the leak down test show the engine is in 100% healthy condiotion, no leaks at all. It is a great reliever for me to get this test done, first it re-assures me that the engine is still in good shape. As some are questioning the condition of the motor, and suggested my engine may already had problems before the kit was installed and hence the under performance.

Anyways, I have also data logged some number for softronic to work on, I have not heard from scott yet, but I am sure he is working on it.

 

you sure you dont have a boost leak somewhere... I had a bad clamp on the f hose that drove me nuts for a day..then had the BOV(diverter valve ) spring not set right.... i was leaking there too.... I was told to check for leaks and I did... Engine may be good but are you leaking pressure out somewhere?? Pressurize the system @ 20 psi or so... You can make the pump yourself, but best have a shop do it....

 

I datalogged a night run with a AP650kit, AP carbon intake, Fabspeed maxflo exhaust, 1.25 bar peak, ~1.06 bar constant, AC on, ambient air temp 61 deg F and 3rd gear. (Greddy specIIb: 52% set, 23% gain, 0.85 bar set gain)

Are the parameters below correct that Scott needs to analyze the tune?

 

On a fine tuned 996TT car,the air fuel ratio should stay between 11,4-11,8...your blue line is extremely rich while the others are a little lean...

 

EG, thanks for the data sharing. I will compare it to the one I have, but I am wondering if you know how to read the O2 lambda value?

 

Hi Ken, below is an example of a typical voltage out versus lambda value of a wideband O2 sensor during an open loop operation. The porsche wideband O2 sensor should have similar curve charateristics. For example, using the data obtained from my run, at ~6077rpm, the lamba is 0.83 with a voltage reading of 0.70 volts. Referencing from the graphs below the setup is very rich and has an AF value of around 11.5

Someone please correct me if I'm wrong...

 

I always wondered how that worked. This all good info. Thanks!

 

Any update regarding with the problem?

 

Those graphs are great. Where did you get them?

 

Lambda of .83 is an A/F ratio of 12.2 not 11.5 assuming you are using Gasoline. You are not way too rich. Either your voltage out reading is wrong or your lambda is not correct. To convert Lambda to Air Fuel ratio you simply multiply the Lambda value by 14.7, it is linear. Lambda of 1 = 14.7 A/F and .83 * 14.7 = 12.2. Using your durametric data log exported to Excel, just add a column and formula multiplying the lambda bank 1 or bank 2 value by 14.7. Can do the same with the set point to see what was requested.