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93 Civic HB SI, 95 Civic HB CX
2,828 Posts
At 100% duty cycle the 440 cc injectors can only support 275 hp. You will never run them at 100% and they won't make that number. Best you could see is about 260 at 90% duty cycle with 440's, maybe a little more if you upped fuel pressure. They are the limiting factor. Whatever turbo you mentioned, just sounds like something that was found on the internet. You'll need a properly sized turbo, else it simply won't fit or work with your combination. Good luck.
He needs a bigger turbo then

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