I have 70,000 on my car, and I put in an AEM Intake with K&N filter so thats settled for my intake system. As for the fuel injection cleaner, I have put numerous amounts at monthly interval. No change whatsoever. The guy (idiot) before me abused the hell out of the car and only used 87 octane. I treat her right now and use 91 shell vpower ONLY. I so far replaced what I could, but now im getting into deeper stuff.
If there is a DIY somewhere, please, post it. Because I want to make sure my sc300 is running prime and well.
I hate car abusers