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Message: <blockquote data-quote="alvin24" data-source="post: 1332098" data-attributes="member: 63">7AFE huh? Toyota dude... =)Wah... wanna run ball bearing turbo?!?! On stock fueling summore? Lagi confirm cannot la... hahaha. Reason for ball bearing turbos are to make the turbos more responsive... small turbos are responsive already, therefore ball bearing turbos are usually only big turbos !!With a TD04L also u confirm need to upgrade fueling system liau la... what more a ball bearing turbo? =) hehehe...Try to read up more and understand how a turbo works... and you should be able to predict what needs to be change and/or upgraded to run the turbo kit efficiently. =)What most people don't understand is that you can't just plonk in a turbo and run as it is. An n/a engine and a turbo engine setup is complete different and is mostly can say 'opposing' to each other's setup. When u run a turbo, u'll need to change its settings so that the engine can work efficiently without damaging anything. N/A engines have high compression... match up a turbo to highly increase its static compression = compression overkill... you'll be knocking before u know it. EVen running on a TD04 u'll definitely need an engine management to retard your ignition timing, else there will be pinging on high revs... pinging at high revs + full boost = visit to the nearest workshop .Small turbos can serve as bolt on kit because they're usually still within the correction range of the ECU and injectors... where the MAF/MAP sensor can still pick up the readings of more air going into the engine, and then the ECU decides how much more petrol the injectors should work... and then sends the signals to the injectors.Original MAP sensors can't pick up too high pressures... and original injectors can't give u enuff fuel for a big turbo. Therefore the only way to bolt on is a small turbo, with small boost. Even HKS turbo kit for RX-8 is running 0.3bar only laa...</blockquote>

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