Abysmal perfromance of 2005 Vitz RS

[Bluevitz-rs]

Originally Posted by SirDigby

it might be the issue of switching from a cable driven throttle body to a drive-by-wire system. I was disappointed with this too when I first purchased my car. do some reading on "1zz-fe throttle body swap." it makes a huge improvement in response and top end flow. it is very simple to do if you own a drill and have access to some 5mm bolts and nuts. (and a junk yard)

why are you using 0w30?

also, look inside of the air box lid. (the top) idk how they do it in NZ, but in the US there is a built in, non-serviceable charcoal filter plastic riveted to the top. take a screwdriver and pop that turd out to increase flow. there is also some good DIY's on box trimming!

You're mixing up your facts.

'05 was the last year for cable throttle. It wasn't until the new model in '06 that brought about all the changes to engine management including throttle by wire and emission related stuff like the charcoal filter inside the airbox.

A cold air intake frees up a LOT of power on the first gens. But you can tap a few by removing the induction pipe from the airbox. It has a small inlet restriction at the end to limit noise.