alvin24 said:Where got such thing as 'too small' wan?? This one is personal preference maa... i'm just suggesting TD025 for bolt on applications... as in, install and jalan. If use any bigger like TD04, minimum boost is 0.5-0.6... therefore you'll need a piggy back ECU, bigger injectors, lower engine compression.......... the list goes on, for you to be able to make the engine reliable. TD025 bolt on, I think the air flow sensor should be able to detect the extra air flow going in and the ECU should be able to compensate... as i said, thats why EMS turbo kit for GTi is running a TD025 also laa.
alvin24 said:I've seen extra injectors mounted directly onto the intake manifold... where as most of the extra injectors are mounted to the intake pipe just before the throttle body/intake manifold.
Reason for extra injectors? So that you don't screw up your tuning during low boost or low rpm. Some people who wanna run slightly higher boost might not be getting enuff fuel during peak boost... therefore an extra injector is used. Extra injectors paired with an additional injector controller, functions in accordance to boost sensor... meaning they're usually set to function only during boost and usually after a specific boost (where u aren't getting enuff fuel). Its also more economical (lower FC) to run this way rather than using larger injectors.
On the case of your TD025 on 4G18 that one... no matter what you do also, best is to have a piggy back ECU la at least! When it comes to turbo kit... tuning is very important to determine your reliability. And no TD025 is not a ball bearing turbo... and if not mistaken they're both oil and water cooled.
H2Zero said:I guess you have to plum your extra injectors to your fuel distributors....
By the way how much do the AIC range in Malaysia.. could be cheaper to source elsewhere..
alvin24 said:ummm... did i not just say mount it on the intake pipe?? Which part do u not understand??
Here's a circled example...
http://img390.imageshack.us/img390/9661/extrainjectors5tn.jpg
Yes... additional injector controllers (AIC) are expensive.