Having completed the various other mods required to get the most out of the EJ255 (see here) in the Forester STI, it was time to get it remapped and see what could be got out of it. From what I read, the guy to go it in my area, is Duncan of Race Dynamix. He […]
The OE Subaru boost control setup is not as good as it could be so when wanting to increase the boost and gain better control of the turbo actuator a 3 port boost control solenoid is really worth fitting. ScoobyWorx sell a known good 3 port solenoid with the correct plug adapter meaning I wouldn’t […]
An important part of getting the most power out of the EJ255 in the Forester STI is improving exhaust flow. The factory catalytic converter (cat) is quite a restriction on flow and it being right at the outlet of the turbo will really reduce the speed the exhaust gas can flow through the exhaust turbine […]
The factory inlet to the air box draws air from just behind the headlight down into a Y piece with a large air box underneath then back up into the filter box. The STI fog light covers have a useful grille section on them though that I thought could be used as a nice cold […]
The EJ255 engine in the Forester STI is capable of a good amount more power reliably but to get the most out of it some supporting mods are required. The OE fuel pump is certainly something that will have it’s limit and age will only have reduced that limit. It seems they will generally be […]
Time for some new spark plugs and while I’m at it an upgrade to a cooler running plug in preparation for more boost, more on that another time. From what I read, the spark plug to go for is the NGK ILFR7H. This is more of a job than with most other cars due to […]
Before I get into fitting this….. Yes I know it’s unnecessary and there’s nothing wrong with the OEM dump valve for the kind of boost the standard turbo is ever going to make. But a big part of the enjoyment of a car, certainly for me, is the noises it makes and turbocharged engines can […]