SELL FAST INTAKE or KEEP IT
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SELL FAST INTAKE or KEEP IT I just ordered a LG G5XB camshaft to replace my n/a cam since i am going with a supercharger for my 2002 C5Z. I already have a 92mm FAST intake and a LS2 TB on the car. Should i keep the FAST intake/TB or switch back to a LS6 intake/tb? Some say the FAST leaks, cracks, etc under boost. What is the psi limit for the FAST? Is there a limit or is it just any amount of psi? Or is the 92mm FAST okay under boost? My G5XB should be here this week and i will be starting my cam swap. SOOOO i would like to make my mind up on the FAST intake before i get the cams swapped out and need to pay for the retune lol. SELL or KEEP?
Are you comparing same boost of the LS2 intake to the FAST intake? Say if you were running 15 psi with the LS2, increase boost after the switch to the FAST and run 15 psi, I will bet the FAST intake is making for power.
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Thread Starter
On The Tree
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thanks guys. I am still not sure about what to do lol. Plus it is hard selling a part that is so new for cheap. BUT for my build an LS6 intake would be more than enough since i am not looking for max numbers. I would like to hear from some ppl or even vendors about their exp with a 92mm FAST with FI. I have seen a few post about the 102mm FAST but i thought i read it is made stronger.
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Here is a good article to check out, they test results of cam + intake in N/A form and with boost. http://www.gmhightechperformance.com...est/index.html
I have run a 90mm FAST Intake without any issues up to 18 psi for several years. Since you already have a FAST 92 then I would keep it. You will make more power on the same boost as a LS6 intake or make the same power at less boost.
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What about porting the FAST/TB? I know it helps with n/a builds so i know it should make a diff in supercharged application. Yes it is a lot of money for the amount of rwhp/rwtq but if i keep why not lol. Unless the porting would make the intake weaker. From what i have read/been told the LS2 TB responds well to porting (throttle response). Thanks
fast units are way thicker than OEM pieces, they even weigh 3 pounds more and thats alot for plastic. so they will hold up longer.
the storys you hear of them blowing up are from detanation under boost and nitrouse, but i rather the intake be the giving point than have a metal intake and have detonation that blows up the whole motor.
the storys you hear of them blowing up are from detanation under boost and nitrouse, but i rather the intake be the giving point than have a metal intake and have detonation that blows up the whole motor.
