Blow Off valve related Question

[Pluemer]

Hey im new to the ka-t thing and im in the process of turbo n my 240 my question is will a non recirculating bov stall my car because of the major vacuum leak it causes under decel and is it safe to run the stock inj with blox fmu and retard the timing

[ashibah83]

stock injectors wont be good for any more than 3-5 lbs of boost, look into some used SR injectors(370cc), if you can, tune your car so it wont bog with an atmospheric BOV, yes retard the timing, look into a better fuel pump (walbro lph255), and im pretty sure your stock FPR would be good

[Steady_One_S13]

Noobie!You should first introduce yourself and post pics of your 240.

To answer one of your questions, my sr20, hks ssq, bov is not recirculated. Runs smooth and there are no affects. Make sure all vac hoses are on tightans secured.

[Pluemer]

could i run about 8psi on the stock ones with that fmu or should i just get sr inj and a emanage or sumthin...idk..bc if i get those inj i have to tune the ecu right??? and do you know anything about that bov i was BSin with sum ppl and the said that my car could stall bc of it

[Pluemer]

cool so the guy i was talking to about that said that but i just couldnt understand why it would do that. i guess ill try it and hope for the best

[Logan76]

It could, but I vented mine to the atmosphere and had no trouble with it.

[ashibah83]

it could stall, BUT if you go with the SR 370's, a fuel pump, and a ROM tune (a Enthaply tune should be good) i dont think youll have any problems, i personally wouldnt run 5 lbs on stock injectors, but i think people have run 7 on stockers, just try not to do something to cause the car to lean out or detonate

[Pluemer]

yea that would probly be the right way but im on a budget and a time deadline i just need to get the turbo on and the car safely drivable to get it back to my house then i was gonna do the ecu inj and pump later

[ashibah83]

just TRY to stay out of boost as much as possible

(700 posts!!)

[Pluemer]

thanks for the help guys

[tEknoS13]

Hey new member from IL... We're coming up!!

[Patarach]

pull through MAF = recirc itblow through = atmospherically is ok

If your going to fmu, the blox fmu is pretty terrible, it like name brand eghey. look for a used vortech of something

8psi is fine on stock injectors and fmu as long as you have a 255lph and back off the timing enough and I would not go any higher than that and turbo size can affect the a/f mix too.

[Pluemer]

srry i dont no what u mean what do i do with the maf

[ashibah83]

if you have your MAF before the turbo, its a pull through

if you have your MAF inbetween the turbo and throttle body(normally after the intercooler) its a blow through setup

a blow through is better for an atmospheric BOV because its reading the air in the IC pipe after the BOV so there is no difference between what goes into the engine and what the MAF is reading, if you have a pull through and an atmospheric BOV your MAF will make adjustments for so much air going into the throttle body, then you have a loss in pressure caused by the BOV so you have a ton of fuel and no air, and stumble

[Pluemer]

so i should move my maf to blow through and is that for the blow off valve reasons or why should i do that

[ashibah83]

on a low power setup like what your talking about doing, i would use a pull through setup

IMO you get better air flow metering with a blow through setup, ideally for big numbers you would go with a MAP sensor, delete the MAF, and go standalone, im not sure if the stock ECU can support a blow through setup, people normally switch to a z32 MAF or something larger when they go blowthrough, and i dont know if an Ethalpy tune can support it

[Pluemer]

so what does anyone think i should do im really new to this stuff

[Patarach]

At this point i think you should use the button labeled search. it will do wonders if you invest a little time.

Basically do more research, so you know exactly what your doing.