Since I've a bigport I filled from the spaces to seal the intake flange. Just suggests I have a phase on the inside. Re: ITB Conversion on 16 valve 4AGE the blacktops ran MAP sensors so there must be a means of getting a great MAP sign. The combustion chambers https://toyota4ageblacktopenginef46543.vblogetin.com/36961509/the-greatest-guide-to-toyota-4age-for-sale