i have a 93 ive blown threw 2 sets of stocks already so i am geting a single custom set up. its a turbonetics t66 BB down pipe the works. currently i only have a cat back on it. the kit comes with a 12psi spring.

now my question is will this 12psi be ok or what wold i need to upgrade to get some reliability built into her?

also parts im puting in with the single is an after market inter cooler and a 255 fuel pump.

also a heads up i live in CA so im stuck with 91 octane

 

What fuel system do you have?
walbro 255 is not going to flow a whole lot more than stock.

 

its all stock

 

You will need bigger secondary injectors for 12psi on a T66. Bigger secondary injectors requires an aftermarket fuel rail and FPR. You will also need aftermarket ECU like the apex PFC

 

f*** thats what i was afraid of whats the minimum i can get away with 12 psi for now?

 

What I just mentioned. Get a smaller wg spring, if its tial they are readily available and cheap. Which " kit " are you getting ?

 

its a custom kit being put together for me

 

Do you have a standalone ECU?
powerfc, haltech etc?

 

Well if its a custom kit, just swap the wastegate spring for something near 8psi, assuming the manifold is designed well enough where it won't boost creep.

 

even at low boost the factory ecu WILL NOT be able to compensate for the aditional air volume produced by the t66= POP goes the motor
The fuel system "may" support it at 8psi but you playing with fire, going single is a "all in" move, and it snowballs real fast.... its time to tap into that rainy day fund....

theres alot of threads here in the single section, look at their builds but bare minimun you need

a "tuneable" ecu
upgraded fuel pump
larger injectors
fuelpressure regulator
Intercooler
boost controller

then you will be needing a upgraded clutch

and once you start laying on the boost you'll find more things to upgrade, like i said it snowballs fast

 

Just as Bacon said....there's more to just putting on a turbo kit. Just spend the extra to reinforce your build to save for worst cases later on.. Boost creeps are scary! G/L