USMB!

 

Haven't been around in a while, but I figured if anyone would have the info, it would be you guys.

 

I'm looking for either a FSM or information about the 99-00 GC Impreza SRX (equipped with the EJ204). I need to know what parameters control the variable intake and/or the pinouts for the ECU. All of the FSM I have found for the GC chassis have been the English/USDM versions which make no mention of this engine (since it was EDM/JDM/AUDM only).

 

Brochures, tech articles, whitepages... anything on this odd ball motor? Does NOT include the 04+ EJ204 (with the LARGE one piece manifold).

 

Thanks!

There is almost no info on that engine online. I've been trying to find information about it as well. I want to swap one in and run a jdm avcs ej205 ecu on one because the ecu it came with is not tunable.

I really just need to know the cross-over RPM for the butterflies. I've got a Frankenstein Phase 2 going and I think this intake can save the mid-range and low-end once the more aggressive cams go in. With this manifold working well, I'm shooting for 200 HP/200 ft-lb (using factory/junkyard parts). I will probably use aftermarket EM (unless I can patch the 204's ROM into a 32-bit ECU and OpenSource tune it...).

I'd be easier to run the engine on a 16-bit jdm ecu, since the era 204 you're talking about is already set up with 16-bit sensors.

 

 

I'll see if I can find the crossover point, I feel like I have ran across that at some point in my searching.

That was my fall-back as well, and use a piggy-back AFC to account for the higher compression, and use an Arduino or Pi to control the manifold solenoid (simple RPM threshold window).

supposedly, that engine has a 7600rpm redline from the factory!

 

over at subaruoutback.org , user west-minist has some experience tuning that engine, might quiz him for info.

 

here's his site's forum; http://www.xtremeracingtuning.com/forum/index.php

Edited February 8, 20179 yr by 1 Lucky Texan