what size injectors are good for a streetport/ stock tII S4?
07-19-09, 12:00 AM
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what size injectors are good for a streetport/ stock tII S4?
I am looking for the right size injectors to use for my FC rebuild. I just got the motor rebuilt and its my first time so I need some help with the build. Since i'm doing most of the work. Any help is appreciated. Thx
07-19-09, 10:21 AM
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So what is it, street port or stock?
If you are running stock boost levels, the stock injectors are fine.
If you have bumped the boost, you are good to about 8 PSI just on a fuel pump upgrade.
If you intend to go a bit higher, then 720CC secondaries and a way to control them is necessary.
Keep in mind that the stock ECU cuts fuel at 8.6 PSI so you will need a FCD to eliminate this.
If you are running stock boost levels, the stock injectors are fine.
If you have bumped the boost, you are good to about 8 PSI just on a fuel pump upgrade.
If you intend to go a bit higher, then 720CC secondaries and a way to control them is necessary.
Keep in mind that the stock ECU cuts fuel at 8.6 PSI so you will need a FCD to eliminate this.
07-21-09, 04:02 AM
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its stock turbo, with a street port. I have an FCD, but i'm planning to upgrade the turbo for a bigger turbo. It has an HKS fcon and some old school electronics. So thanks for your input.
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