Originally Posted by
jonnyshaw49
hi could someone please give me a quick explanation on actuators available eg -31 etc, im currently running a t2/t25 with 360 bearings but next year want to move up to a t25 or t28, im after a new actuator but with so many available dont know what is best, i want to run around 18 psi, i have double intercooler, running on standard pistons with headwork and 285 cam, what actuator would work best on my t25 but also when i get the new t25 or t28? also what are external wastegates used for and is there any benefit appreciate any advice thanks. i have a collins style t3 acuator but on rolling road they said it was too big and it might be leaking but dont know the make for new springs etc