I would like to put 680cc or 750cc injectors to my 420A turbo, but i want them to fix in everyway, wich ones i should buy? like with the same plug that the 420A have.

luisthiele said:

I would like to put 680cc or 750cc injectors to my 420A turbo, but i want them to fix in everyway, wich ones i should buy? like with the same plug that the 420A have.

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You are going to need fuel management to control those injectors. Otherwise, your car will not idle under stock ECU management.

I would recommend either a standalone system, MSnS, or perhaps a secondary fuel set-up working with an SFMU to raise your FP under boost.

You can't just throw on bigger injectors, you need a way to control them beyond what the OEM ECU is capable of. I'm sure others who've upgraded fuel set-ups will chime in to give some input.

i already have a greddy e manage blue on my car.

If you want to keep the injectors "drop in", you may want to get in touch with a place like RC Engineering; they have the ability to modify stock injectors to flow more. They say they can increase flow by about 50% over stock.

RC Fuel Injection

Boostjunki84 said:

If you want to keep the injectors "drop in", you may want to get in touch with a place like RC Engineering; they have the ability to modify stock injectors to flow more. They say they can increase flow by about 50% over stock.

RC Fuel Injection

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which would put our injectors at less than half the flow he wants.


There are plenty of injectors that will work. A quick search will give it to you.

Srt-4 neon injectors are the same from my research. I plan on getting a nice big set too so I don't have to upgrade later on down the line.