10-08-2013, 03:50 PM
2.5 inch is more than enough under 250bhp.
Even a 2.25 inch would be fine if it used mandrel bends for under 200bhp but ideally you want the least restriction possible after the turbo so if you're spending the money you might as well just go 2.5" (3 inch is overkill).
Even a 2.25 inch would be fine if it used mandrel bends for under 200bhp but ideally you want the least restriction possible after the turbo so if you're spending the money you might as well just go 2.5" (3 inch is overkill).