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Old 11-29-2013, 12:54 PM   #1
Scooby Specialist
Member#: 180217
Join Date: May 2008
Chapter/Region: MWSOC
Location: SEMI
2001 Porsche 911 TT
2003 Mercedes E55 AMG

Default Newbie problems

I just posted this over at RomRaider, but i didn't realize it would need approval first. Whoops.

Hi all, just picked up a tactrix cable Wednesday. Im diving in head first, so sorry if the answer seems obvious.

I just picked up a 2005 Saab 9-2x Aero. The previous owner killed the EJ205 and replaced it with a EJ255 and got rid of AVCS. The car has a catless turbo back, but the rest is stock. I ran a LV (snap attached) on it and the AF learning is maxed in A and C (and probably B) and I dont think im getting into D much because the car goes into limp mode. I was thinking okay, sweet, I have a boost leak, so I did a leak check and I didn't find anything.* At this point I pulled the ROM and compared it to the stock ROM listed here. They're the same, but I flashed on the stock ROM with P0420 turned off for ****s and giggles. During light driving the CEL stays away, its only when trying to beat on it that it throws a CEL.
My two questions:
Is the injector scaling off? The EJ205 light blues are 440cc v the EJ255 dark blues at 565cc. Wouldn't the car always want to throw a lean CEL if this were the case?
This car is auto, can I flash a 05 MT base tune into it? I didn't see any TCU parameters.

*I capped my lower purge valve line and capped the turbo inlet to valve cover breather hose. Then ran system up to 20psi.

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Old 11-29-2013, 03:31 PM   #2
Scooby Specialist
Member#: 334105
Join Date: Oct 2012
Chapter/Region: MWSOC
Location: South East Michigan
2005 Saab 9-2x Aero
Ver8 EJ207, 6MT, Red


The injector size should be the only difference between the ej205 and the EJ255 in the eyes of the ecu especially if the avcs is disabled. I would think so? Is the compression ratio different between the 2 motors?
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