A bigger turbo flows more air (volume); so at the SAME PRESSURE does(the same engine) makes more power than with a smaller turbo? True or false.

If I go single turbo and keep the boost at 10psi, should i worry about upgrading the fuel system? Speed Freaks not need to apply. Thank You.

Maybe I should start a poll.

 

When you said "boost down" Do you mean stock or 1-6 Psi higher than stock? I ask because if its really true; more air volume would require more gas. So I would need to upgrade the fuel system then.Then that means more than 255HP with 10Psi. Ev7

 

Depending on which turbo you go with. Bigger the turbo the more oxygen molecues it'll push into the engine, meaning leaning condition. If you have a 10psi wastegate spring then you can run it at 10psi and it'll make more power due to more air. I would at least get a fuel pump and a Fpr just to be safe. You really can't tell unless your dyno your car.

 

True, assuming the turbo you choose is capable if flowing more air the than stock twins.. at least up until the point where you reach the max flow capacity of your ports (stock, street, etc.)

If I go single turbo and keep the boost at 10psi, should i worry about upgrading the fuel system? Speed Freaks not need to apply. Thank You.[/QUOTE]

Absolutely you should worry about upgrading the fuel system, the extent that you will need to modify it again depends on the turbo you choose. You could run a TO4E at moderate boost with just a fuel pump upgrade and a RRFPR. A T88/T78 on the other hand would want a lot more fuel than that.

Matt
93 SSM

 

You're worried about spending $700-800 to upgrade your fuel system when a small single kit costs over $3000 without tuning?