15% pulley give a result from 15/20 bhp not really need a software tune. 17% will do about same but little more torque. And need a bigger intercooler. But now 3 years later i have a 17% pulley and 550 cc injectors and Catcams camshaft and a bigvalve head and a decat. Then a custom Bytetronik tune. run about 250bhp. Loving it!!
@@Nibbor4 thank you I'll prolly just go with 15 while I'm replacing my clutch and Supercharger oil change and water pump/timing chain..would a tune help it much more?
Is this to the wheels ?
Hi there! I'm planing on deleting the pre-cat, does it really improve the response, i mean, does it really worth?
It’s only give you a better sound. And maybe more pop’s. But i think it’s worth for sure!
@@Nibbor4 I’ll do it, thanks!
Do you think it will affect for the emissions test?
@@Pab10vocho i had my precat deleted in my red r53 and passed ca smog. Precat is there for cold starts. The main cat is still installed on mine.
Thank you @@herbienatividad ! Another reason to delete it.
looking at pulley upgrade for my 05 S..What would you get the 15 or 17? for street driving and why? also should i get tune after
15% pulley give a result from 15/20 bhp not really need a software tune. 17% will do about same but little more torque. And need a bigger intercooler. But now 3 years later i have a 17% pulley and 550 cc injectors and Catcams camshaft and a bigvalve head and a decat. Then a custom Bytetronik tune. run about 250bhp. Loving it!!
@@Nibbor4 thank you I'll prolly just go with 15 while I'm replacing my clutch and Supercharger oil change and water pump/timing chain..would a tune help it much more?
drumrooster a software tune is not really necessary. If you only do a 15% smaller pulley. If you want to go more i would recommend it
Do you have to change the intercooler if you get a 17% or will it blow your engine?
Joe Task, no need to change the intercooler with a 17% pulley it will only recover the cool air faster