Got an Altezza rs200 (3s beams)
Im having a problem where if i full throttle there's a hesitation around 4-5k rpm, as if its being strangled at that point, then the power will come after that.
If i use around 60%-70% throttle it will rev cleanly up and down the rev range with no problems.
Gave it a service with new iridium plugs and genuine toyota oil filter and 5w30 castrol edge oil
I cleaned the MAF, reset ecu and cleaned the throttle body(without taking it off),ran fuel cleaner aswell, stock airbox with K&N panel filter and still no good,
After resetting the ecu (by removing battery) it doesn't idle properly it jumps from 1k -3k up and down for awhile, i switched the engine off then started it back up again and idle was fine so maybe leave it longer ?
No dash lights, everything is fine as long as its about 70% throttle or below
my previous altezza didn't do it before and seemed quicker
Any ideas ?