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Okay, I'm trying to plan my turbo kit (just like 99% of the people on here) and I'm stuck on the returnless fuel line problem. Can I get away with just 4-5 psi and the stock fuel system with maybe a vafc2, or should I just spring for the SF fuel management system? If you have any other suggestions, please let me know. Thanks.

 
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extra injector and a controller or the e-manage...there is also the digital fmu from aeromotive

 
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as a matter of fact with that much boost u can get away with no fuel upgrades. a friend and i tried it. itll run. but make sure u dont pass 8 psi. because after 8 psi... i just dunno lol

like zinky says u might wanna get a gadget to watch ur air fuel ratio. just incase as a precaution. but with 4-5 psi it will work. guaranteed!

 
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Don't even go over 2-3psi on the stock fuel system. I know what the stock fuel system can handle. And that's about 2-3psi before it goes really lean. Your car can still run up to 9psi, but it's so lean, and your engine is running so hot, that all you will do is lose power. Not to mention begin the process of frying your engine slowly.

 
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The TD fuel system is great untill you hit about 9 psi, now its having trouble keeping up.

 
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is that the basic fuel kit (TD) or the 'extreme' kit?

 
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Update: I re-tuned the car today and no lean spots and no CEL!!!

Oh and I have the extreme kit.

So Id say go w/ TD fuel system.