تعديل سائل التبريد للأسطوانة 4 لمحركات سوبارو EJ

Installed this on my EJ207 and the coolant flow to cylinder 4 feels much more balanced now — the engine temps are noticeably more even across all cylinders during hard pulls. No more worrying about hot spots causing detonation.

My EJ255 was always running hot on cylinder 4, but after installing this mod, the temperature spread across all cylinders is now within a few degrees. The increased flow to that specific cylinder really seems to work, and I've noticed less knock under hard driving.

Installed this on my EJ205 and the difference in coolant flow to cylinder 4 is immediately obvious when bleeding the system. The knock counts on that cylinder dropped noticeably on the next tune session, and temps are finally even across all four. Worth the effort for anyone running a stock head gas