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Discussion Starter #1
Like it says I'm thinking about changing to a 67bb turbo from on3. i currently have the 70mm right now but they say the 67bb spools allot faster. What would i need to change in order to do this? Does anybody know?

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Discussion Starter #3
What i was trying to ask is would i need to get my car tuned for the second time or would the tune on it now work?

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What i was trying to ask is would i need to get my car tuned for the second time or would the tune on it now work?

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any time you change something that changes the air moving in and out of the motor, you want to get a retune

go with a pte-6768 ported s housing, and the biggest t4 hot side... it will make more power, and move more air then you wastegate can handle
 

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Discussion Starter #6
Ok so i would need to tune the car after the knew turbo right? Would i need to up grade the injectors? I have 42 pounders now

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Definetly retune especialy with a billet turbo,it moves more air eveywhere. When i did the swap from a pte cast 67 to the comp billet 67, I was running lean.

Injectors have nothign to do with actual power production they just govern the max power you can make before running out of fuel/injector. 42lb injectors shoul be good for around 550rwhp easy.
 

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Discussion Starter #8
Awesome thank you for all the information and i think I'm going to go that route and get me a new turbo and tune the car once more

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