Software tuning for 986 w/996 engine

[Bigsmoothlee]

Thanks, Im going to send FVD an email.

Do I have to flash my ecu to 996 ROW program first? I dont want a check engine light for not having cats or secondary air injection.

Also, the 3.2 tune FVD has wont work on my car. I have a cayman S airbox and 3.5" airflow meter...

[BYprodriver]

Originally Posted by Bigsmoothlee

Thanks, Im going to send FVD an email.

Do I have to flash my ecu to 996 ROW program first? I dont want a check engine light for not having cats or secondary air injection.

Also, the 3.2 tune FVD has wont work on my car. I have a cayman S airbox and 3.5" airflow meter...

If you have installed a different size MAF housing, you have to reprogram the DME with a program for that size MAF housing. Any Porsche factory authorized diagnostic tool can do this once you have the programming codes uniqe to your DME. The 2000 996 ROW program should work great. A aftermarket program SHOULD work better,but it WILL cost 10 times more.

[Bigsmoothlee]

Originally Posted by BYprodriver

If you have installed a different size MAF housing, you have to reprogram the DME with a program for that size MAF housing. Any Porsche factory authorized diagnostic tool can do this once you have the programming codes uniqe to your DME. The 2000 996 ROW program should work great. A aftermarket program SHOULD work better,but it WILL cost 10 times more.

Thank you for clearing that up. In addition to the car running as intended, I also want some more power. Should I get the 996 ROW tune first and then get a 996 software upgrade?

Also, do I have to worry about which throttle setup I have? Im using E-gas.

[JAAY]

I pm'd you my number if you want to call and talk about how to get it tuned up.

[Reebuck1]

I am running a 1999 996 3.4 motor in my 1998 986 ( original 2,5). I am using a 987 air box with 3.5 silicon tubing and a stock 996 throttle body and MAF. I had my 986 5.2.2 DME flashed as a 996 ROW. Car runs strong and everything works including my Top. Car is really quick !!!
I ran into trouble when I combined a 996 analog gauge cluster (with my 986 cluster mother board) and installed them in the car. My 986 DME which thought it was a 996 ROW could not talk to my gauge cluster that thought it was a 986 cluster. I had to re-program the 93c56B flash chip in the 986 mother board to make it think it was a 996 mother board and all now works perfectly. At no time in this process did my top stop working. Hope this helps some!!

[JAAY]

Reebuck have you checked your afr's at all?

[BYprodriver]

Originally Posted by Bigsmoothlee

Thank you for clearing that up. In addition to the car running as intended, I also want some more power. Should I get the 996 ROW tune first and then get a 996 software upgrade?

Also, do I have to worry about which throttle setup I have? Im using E-gas.

You should notice a power difference with the factory program, all 2000 & later are E-gas so no issue there. Aftermarket programing is far less cost effective for power gains so I can't justify them. None of this will affect convertable top operation.

[Reebuck1]

Yes, I checked my AFRs. and they show the car running slightly lean. I have to pick up some parts at Porsche on Friday so I am going to have them verify what my Durametric is showing. I'll let you know on Monday what they say.

[Bigsmoothlee]

Thank you guys, I definitely know which direction to head. I'm going to get a 996 ROW version code and then do a software upgrade for a 996.

Jaay, I'll probably text you in the next day or so. Thank you.

[Reebuck1]

I was asked how my AFRs are after my motor swap and 996 ROW flash.

FRA.....1-3....at 0.93
FRA.....4-6....at 0.91

TRA.....1-3....at 0.00
TRA.....3-6....at 0.17


Porsche dealer's numbers were only differed from mine by about + or- 0.01 so I guess my AFR looks to be good with the ROW flash. I am sure I could get it better with a dino tune but I am not there yet.

Thanks