Otherwise, great summary about the swap. Forgive the crappy wording of that question, but this sums it up. why? STI cluster??? 2.5rs with complete JDM WRX swap done! While the EJ25 ECU can handle the engine change, the camshaft differences, compression ratios, etc are enough to warrant a matching tune. The name EJ205 is just a basic designation of an EJ engine, with 2.0 liters of displacement, and the 5 or 7 is an identifier for whether it came out of a WRX/Forester (5) or STi (7). My EJ255 2 pistons went bad. Forester Swap EJ20 Subaru Conversions. The Subaru EJ engine is a series of four-stroke automotive engines manufactured by Subaru.They were introduced in 1989, intended to succeed the previous Subaru EA engine.The EJ series is the mainstay of Subaru's engine line, with all engines of this series being 16-valve horizontal flat-fours, with configurations available for single, or double-overhead camshaft arrangements (SOHC or DOHC). Most parts are compatible from EJ25 to EJ20: Same timing belts/covers and waterpump, clutch components. I picked up this car for my brother inlaw for a song and a dance. However, I can get a JDM EJ20 which I'm told is a direct swap. its like a choose your own adventure book. Supposedly, the intake and exhaust will swap over from my EJ25, but I want to hear feedback on everything else. We won't be swayed by popular EJ20 upgrades, they need to be cost effective. The EJ205 was first introduced in 1999 in Japan and 2002 in the US market. For a JDM EJ20 conversion, I feel that RHD swap is hte best way to do it. The best EJ20 upgrades on an engine are usually the ones that give the biggest return for your cash. The JDM EJ20X is sold as a "forester XT" replacement engine all … I have an EJ25 engine in my Forester that needs replacement due to a REALLY long story. I swapped the original EJ25 engine with a EJ20 from Japan. I wanted to find a quick option to drop in with low miles. is there any other way to lien the gas without changing the ECU. RHD swap. Mar 2, 2019. Altering your EJ20 cam will make a dramatic difference to the engine bhp. If you aren't concerned about OBD2 testing/emissions, an EJ20 ECU would also give you back some power. JDM BG5 EJ20tt to US BG5 2.5 Conversion - Info Please; What Cars Came With A Rear LSD? I've been trying to do research and figure out what is needed to do this swap, a lot of the information seems pretty vague. I just swap a EJ20 engine to my 2001 forester, but i keep using my original ECU, i put a SAFC II in to hope decrease the fuel, but it dosen't help really much. Power Steering Rack Conversion; Forester Swap EJ20; Faster steering rack? SOHC EJ20 NA swap (ej25 replacement) Hey fellas, I wanted to make a quick post on a recent swap I did over the holidays on a 2002 impreza wagon. Hi, i need some help from someone. Best EJ20 tuning parts. Every single wire, EVery sensor for electronic climate control, Every bit for power steering, AC, Everything. everytrthing fits perfectly. I have searched for literally 3 days straight and cannot find a post that anyone has done this swap, or at least has documented it. I have a 1999 Subaru forester L with manual tranny. Bulkhead wiring harness? Hope it gives you many more miles! i'm going this route for my personal car - i put my money where my mouth is. Tuning the Subaru EJ20 and best EJ20 performance parts. EJ20 swap w/Link...easier? right now a big black cloud is coming out from my exhaust even when is idel.