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: i am at stage III, i got the intake+exhaust+ECU+stillen stage 1 clutch, other than that its stock, and i am also gonna get the axxis pads next week. : 1- I am going to do the 60k maintenence sometime soon,and i was wondering is there parts that i can upgrade instead of just replaceing them ( for example: spark plugs, fuel filter..etc ) coz my friend told me that i can get some kind of plugs that can increase as much as 7hp is that true? if not whats the best preformance plugs out there ? I agree with KEEPSAKE, get the underdrive pulley. Got Rice WILL hook you up on a good deal. : 2- what do you think is my next upgrade as a stage IV, do i go with intercooler or boost controller ....etc? You better get test pipes(either purchase or have muffler shop custom make a pair for you), and gut the pre-cats. you need to relieve any turbo backpressure before you really start crankin up bigger boost...otherwise more hot air is being held up in the turbos and engine which is not good. After the gutting....THEN get a boost controller such as an HKS EVC4. : thanks fo the help : LaterZ
 "Ooooh Hayato!
Can I ride in the Z with you?" |