I've only seen a couple of data points and I like to see more, but I too am beginning to be suspicious that the engine load in Durametric might not be real, but requested (???) - for the simple reason that it's "too" consistent between various data points. It is consistent between my car and yours, and it is also too consistent between the 2 runs I did: I got 222-224 with GIAC Sport mode both times, near identical. At the minimum I suspect engine load is only an approximate of a real dyno.

So... here's what I am thinking:
Requested load: We both see 172-174 in Durametric, your run in 4th, my in 3rd; I don't know whether this is real, approximate, requested, etc., and am beginning to be suspicious that it's not real.
Real boost: 1.34 in mine with Cargraphic exhaust, 1 in yours, both measured by Durametric. I am fairly sure this is real boost, not calculated. The lower number in your car bothers me a little bit because even in colder temp here, I could still hit 1.2 fairly easily, even before the Cargraphic exhaust install.
Actual load/torque: Does your car have actual torque that is equal to mine, with 30% less boost? I don't know but I don't think so because I think boost is a primary determinant of power. But... that is just speculation and I think the only way to get the answer is with a real dyno.

Could you do a couple more runs? If Durametric Engine Load comes up 172-174 every single time, than I think the theory is proven that it's not a real, measured, number, only approximate or requested. Sorry I don't have Durametric anymore so can't do the test myself.

 

I have some more logs from the same night, I did se higher boost yesterday but I'll get more logs. I would like a 3-4-5 gear under WOT and look at timing.

What is the Durametric value I should log for Timing Advance? I didnt find anything that seems to be correct???

 

Here I got 173.09 in Maximum Engine Load

 

Here I only got around 160 in Engine Load and lower boost, could have been a bad log i.e. I didnt get to full WOT due to traffic

 

This might be without Sport Mode enabled, would explain the numbers, I did log both with and without but have no way of knowing which log is with what settings...

 

So i managed to copy my Duramteric values into an old CSV from my Beemer so I could open and use the JB4 viewer from BMS (burger tuning.com). I only moved Ignition Advance, Boost, RPM.

So I havent seen any good logs of Ignition from other Porsches so I have no clue if this is looking ok or not, but I think its in the ballpark of the BMW N54 (but it was a higher compression ratio engine and running DI so its not apples to apples at all).

The GT1 runs more aggressive timing in lower RPM's but at higher RPM's it is similar (around 15deg)

 

if anyone know , whats exactly the name of the requested boost value in the durmatric software ???

 

Hi, you meant actual boost pressure, not requested boost, right? If so, it's "Pressure ah. of thr. plate fr. press. sensor." See supermod bbywu's excellent Durametric sticky above for explanation.

 

Hello buddy
No, i meant the requested boost by DME value !! I can not find it in my durmatric software !

 

Engine load is an "actual" value, not requested. It is calculated based your maf reading if you have a maf sensor. I have an EBC, so the ECU does not know how much boost I'm dialing in and my load varies with boost.

That fact that one gets very similar numbers each time does not imply that is is requested. That's analogous to saying if you dyno your car you should see different results each time -- not the case if the conditions are the same. If fact, by having a calibration on your load, you would know, in combination with other actual values, if your car is under performing due to weak spark, vacuum leak, fuel, etc...

 

^^^Thanks for the helpful clarification. Fascinating stuffs.