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Everything posted by 86BRATMAN
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I never tried the power mode mod on my 97, I swapped it to a manual about a year ago. So I was just going off others input on that. That's my only personal advice for the shift points on the automatic, however I do vaguely remember some old posts about a diy shift kit aimed at svx 4eats, which are basically identical to legacy 4eats except for the final drive ratios. So maybe some searching can get you results on that subject. And the egr cel warning was for capn_r who posted right above me, sorry for the confusion there.
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I had a real nice post typed up and my damn phone lost it. So here's a quick and dirty version. 95 is a one year ecu, the pinout is different from 96-99. You can't change the pin locations inside the ecu because they're soldered to specific circuits on the ecu motherboard. The only way to do it is to change the pin locations on the body side connection. Basically grab a pinout for the 95, and one for the 96-99 and make yours match the newer one. Shift points are controlled by the tcu, there isn't a performance tcu available for our cars. But there is a mod that will put you into "power mode", something the non-us market 4eats had that we didn't get. You can read more on this in this link. http://sl-i.net/FORUM/viewtopic.php?f=70&t=17483
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Due to the ej25ds all having egr here in the states there is no way around the egr code coming up on a non egr ej22e. It effects nothing in the way the engine runs, just has the code. If you live in an emissions state you can always keep your stock ecu for testing time,just swap it out a few days in advance so all the monitors get set before you take it in.
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Also I forgot to mention why the 95 automatic ej22e is most favored to replace the ej25d. It is the only year that will have the dual port exhaust, non-interference, and egr all rolled into one neat swap package. The 95 manual ej22e is a close second, and can be used if you don't care about a cel for egr system. All 96-98 ej22es are single port so they require swapping the exhaust manifold as well.
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The 95 is a one year pinout and won't swap with any other year, well it will but don't expect it to run. 96-99 ej25d and 96-98 ej22e have the same pinout. I have a 98 forester ecu in my 97 and everything works perfectly. With the ej22 ecu my hybrid motor would surge through the rpms and power would drop off much earlier than it should for my build. The ej25d ecu smoothed the motor considerably and it pulls hard all the way to the rev limiter.
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The ej25d and ej22e have the same fuel injector flow ratings and the cars use the same fuel pumps. The difference is in the timing and fuel curves, that's what really transforms how the engine runs. My high comp is actually more fuel efficiency on the 25d ecu than it was with the stock ej22e one. I got around 33mpg highway on a recent trip, with a draggy brake caliper.
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There are minor differences over the years in the bellhousing, 90-98 are phase 1 4 bolt bellhousing and 99+ are phase 2 8 bolt. There two phases are interchangeable for manual transmission, but not automatic. If you have access to the transmission code a quick google sear have should give you the final drive ratio, you can also post it here as some of the members are handy at reading them.
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And yes, that's the phase 2 ej22 gasket I mentioned earlier in the thread that would work for you.
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It's been about 2 years since I did it, and was a fix and flip. I can get some rough idea pics together tomorrow, really not as complicated as the description makes it sound.
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Missed this before, but I meant to actually port the throttle body for the iacv port to flow into the throttle passage. and make a plate to adapt the throttle body to the older manifold. I have done this, and it does work. And I'm not the only one who has seen the belt width difference, it was first noticed by a member on legacycentral doing a wrx ecu swap on his ej22t using ej222 cam gears. Anyways, there were no ej22t composite gaskets. Oem were MLS, I've seen some aftermarket gaskets say they're for the T bit coolant port pattern on their pictures are 22e. Not to mention they would leave you with a compression ratio of roughly 8.7:1.
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Carpet, seats, and dash are fairly easy swaps, door panels won't work for the coupe though. If you have a whole STI donor to do the swap with you'd be best served by taking the complete wiring harness out of the donor and using it for your swap. The wiring plugs that will need work that way would be head and tail lights and door wiring.