Well I thought this is a good time to post on progress on the tuning of my car. FVD is doing the tuning thanks Willey and Mark, I installed the Duramatic software for the parameters and their Flash utility software for installing the modified ECU map. I am hoping to do the first tune at my residence and the final on a dyno, at present the car runs really rich and have plenty of error codes and hunting of the engine itself so getting it to idle is not possible at this time, but I will admit I was nervous running it to operating temp. We are trying to get a way of seeing what the mixture is since I am not reading anything like proper FRA bank 1=99% and 2 =95% and RKAT 1=0% or 2=0% the camshaft positions 1 or 2 also registering 0%. I was expecting initial problems just not the parameters that I really need. I feel I am tuning in the dark but one thing we agree upon is the the injectors are almost twice the size of stock so it must be rich. FVD has shipped my parameters over to the German engineers and will know more what they say when they take a look next week after vacation, boy are they going to have fun when they get back.
I have done some
educated guessing here on the hunting that with flowed 48# injectors that the error code #115 MAF "out of range" is showing the ECU is trying to compensate but can not. I am from old school tuning and not familiar with this stuff so feel welcome to input your ideas they are appreciated.

ERROR CODES:

115 MAF out of range
13 heating power ahead of cat bank 1
62 damaging to cat
63 cyl 1 misfire damamging to cat
65 cyl 3 damaging to cat
67 cyl 5 misfire damaging to cat.

I have some videos please excuse the quality, also a data file of many parameters of engine running log file (xls format) for the hardcore anyone want to try to graph it?. I will add as tune progresses.


Located at:

http://www.webbspot.com/Porsche/fvdvideo.html

 

Bring that bad boy to PIR on 10/7!!!!

 

I am trying to get it down the block and back, I'll try just do not hold your breathe. Hopefully it will be cooler have fun!

 

Great project. Sounds you have some work to do though... I am curious to see how that FVD software works out. I know there's room left in my car for further tuning.

 

Remember that you have to reduce the reading of the MAF and adjust the maps accordingly. Without an inline resister reducing the current to the MAF, you will not only run rich (if the maps have been modified) and you will eventually blow it. The resister will also drop your calculated load.

At what speed are you spinning the blower?

48# injectors are not too big.

 

Yes, along way to go yet , but they seem to enjoy what they do and promptly call back if they need additional info for your tune. They flew their engineers in from germany to fix a problem with roots style SC because of idling problems and got it sorted. Mine is the first centrifigal that they have done to my knowledge, but yours is already running smooth and just needs tweaking and would venture to guess it would be easier. Hopefully when mine is done this thread can supply some answers to some of your questions.

 

1999 glad to see ya around.
There was some mention of the resistor in a thread I read once steer me in the right direction if you could and are you using a resistor, it would be nice to have some things dialed in on my side if possible? They are working a map up next week for me. The injectors I purchased where 42# and according to my calcs they should produce around 430 or so at WOT CRK HP however, when I had them reflowed they came out to be 48# that I do not understand? My main concerns are I am not sure to how much boost I am pushing with a 3.33" pulley, as far as SC speed I would like it at 45792 K at WOT with my pulley?

 

Dang D-dog how much power are you trying to get?

 

whats the max PSI is that blower rated for, 20psi?

 

Do not remember exactly but it's more then I need.

 

The amount of boost is reduced by all the tubing and elbows between the outlet and the cylinders, along with heat. With a 3.33" pulley you will probably generate 6.5 psi if I remember what your layout looks like.

 

This is the trouble with posting to 2 boards I'm over there posting when you are over hear posting.

 

650 to the wheels

 

All kidding aside. I'm at about 435 to the wheels. An even 450 would be cool.


I can't wait to see how this project works out. Especially with the custom FVD tuning.

 

A slightly smaller pulley should do it... Evo will throw out its warrenty though. I believe someone has done it here already... and it was like $80 for the part.