been doing some research and Ive decided to post a thread asking for help..
Ive got a L33 all aluminum 5.3,stock bottom end,stock 799 heads,stock intake,stock fuel rails,torquer v3 cam. anywho..i want to run a decent size single turbo setup. ive got a kit picked out already for a reasonable price.believe its a t56. i want to know exactly what injectors ill need to run atleast 6-7psi of boost,possibly 10psi later on and which injectors will fit in my stock fuel rails. i have the return style rails if that helps. i just want the injectors to fit like factory,42# or 60#?? i want to run the stock intake as well. has a single walbro255lph inline pump as well. surely i wont need two for that small setup. also will the factory fuel pressure regulator work fine????? also on the oxygen sensors will my factory sensors work? if so where will they need to be mounted? and a wideband sensor i guess? for a afr guage? will someone explain that one to me a lil more. also turbo will be intercooled. and what about the oil cooling for the turbo,where will i need to tap into? it will be mounted up front. basic rundown,want close to 500hp,need to know right injector size and part #s of which will work like factory. what amount of boost will be safe. thanks all,much appreciated!!

 

I'll get a couple of these.

Injectors - around 60lb. should be sufficient for your goals. My 07 took USCAR style injectors, I believe yours are different.

If you use a trick or KB manifold, the front 02 sensors are removed, then you tune them out. The rear ones stay in place and operate like normal. You'll need a wibeband to monitor A/F ratio. It will go in the down pipe right after the turbo.

People on here run 10 psi daily, all day every day without much of an issue engine wise. 10 psi is a pretty safe amount for a daily. Also, I think your cam may be a little to big to be a "good" boost cam. It will work no doubt, but turbo cams tend to be pretty small in terms of duration, and the lobe separation angle usually pretty high. A very common cam is the Isky "Triple 12" 212/212 on a 112 LSA.

 

I have a trick kit, and the front 02 sensors are in the crossover pipe. As said above, 60lb/hr Injectors will work. A wideband will go in the downpipe.my injectors are 65lb/hr from five0motorsports. They are direct plug and play. Part #11180650

 

check out my build thread fairly basic turbo setup

 

I' pretty sure you keep the fronts O2's and tune the rears out.

 

^^^^^^
this is what I've done every time the catz was removed .......

 

thanks guys for your feedback,i only have the front o2s. a code reader tells me there is no activity detected on bank 1 sensor 1 and bank 2 sensor 1 but my o2s are brand new. could that be in the tune? texas speed mail ordered the tune for me. also,will my stock fuel rails be ok as well as my stock in-rail fuel pressure regulator for this turbo setup? walbro255lph will be enough?

 

is it passable you have them plugged in to the rear o2 plugs?

I'm in the same boat never boosted before from what i read walbro 400 is the way to go in the tanks, I dont really know about the stock fuel pressure regulator I just got a aeromotive one to install once the turbo go's on

 

these are the correct o2s for the upstreams on my truck. which makes me wonder if its in the tune

 

i cant figure out how to upload pics on this dang thing but the part # for my sensors are 15150 they are bosch o2s