86 Wonder Wedge Posted February 8, 2017 Share Posted February 8, 2017 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! Link to comment Share on other sites More sharing options...
86BRATMAN Posted February 8, 2017 Share Posted February 8, 2017 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. 1 Link to comment Share on other sites More sharing options...
86 Wonder Wedge Posted February 8, 2017 Author Share Posted February 8, 2017 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...). Link to comment Share on other sites More sharing options...
86BRATMAN Posted February 8, 2017 Share Posted February 8, 2017 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. Link to comment Share on other sites More sharing options...
86 Wonder Wedge Posted February 8, 2017 Author Share Posted February 8, 2017 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). Link to comment Share on other sites More sharing options...
1 Lucky Texan Posted February 8, 2017 Share Posted February 8, 2017 (edited) 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, 2017 by 1 Lucky Texan Link to comment Share on other sites More sharing options...
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