15-16psi will be fine.

Did you not see how Matt Monet ran high 11s in a 16T powered car on stock fuel system at 16psi?

Your 15Gs are not moving so much air at 12psi that you will max out 360cc injectors.

 

:stupid:

I ran a 12.44 @ 111 with stock injectors and 13Ts at ~15psi.

 

you will be fine man. I ran around on 360cc for awhile while getting bigger.

 

Thanks guys, I'll swap them out this weekend.

 

My stock injectors reached 100% injector duty cycle at 8psi in 2nd gear with my 15G turbos. This tells me there's not much left at higher PSI.

Other useful tidbits:
600 feet above sea level
Supra fuel pump (not hotwired at the time)

Yes you can run 15G turbos on stock injectors, but certainly not at 15-16psi like others have suggested.

 

Mine hit 140% duty cycles at 15psi on 13Ts.

 

yo Ron, I wouldn't go past 12-13psi honestly, we have piss 91 octane out here.

 

youll be fine at 12 psi.


i ran DR650s and stock injectors at 12-13 psi for a couple years. everyone said i was nuts.

 

On 9B turbos my stock injectors didn't reach 100% duty cycle until 14-15psi in 2nd gear. Switching over to 15G turbos brought this down to 8psi. That's a significant drop when you compare it in this manner.

I'm aware we can go above 100% duty cycle, but I don't recommend anything that's potentially unsafe that's why I left it out of my last reply. Potentially running on the ragged edge is not my thing.

The problem with someone running xx psi at high elevation cannot be replicated safely at a lower elevation because fuel will run out sooner (more oxygen molecules, more fuel). So don't get comfortable that just because someone else can run safely doesn't necessarily mean you can.

 

The problem with someone running xx psi at high elevation cannot be replicated safely at a lower elevation because fuel will run out sooner (more oxygen molecules, more fuel). So don't get comfortable that just because someone else can run safely doesn't necessarily mean you can.

my house was 17' ASL

my work was approx 10' ASL

my drive to work took me to maybe 50' ASL


regarding matt running xx psi on stock injectors....i agree.

 

I'm in San Jose cali so I think I'm like at Sea Level.

 

I ran 15psi with DR-16T's and stock injectors for quite some time. The car ran 11.9@118mph on stock injectors

I now have 450cc injectors, and a snow stage 2 kit on the car and am running 19psi day in and day out.

 

Only because he has the "need" for SPEED....

Bob.

("we" should buy Matt a "FIT" or a "Prius" and MAKE him drive it daily....it would make him CRAZY!!!)

 

Put back in the 360 CC's, set to 12 psi... Still getting the fucking p0300 code... I think it's time to see the car. Sorry guys but I just can't deal with this shit anymore.

 

What does that mean?

Basically this means that the the car's computer has detected that not all of the engine's cylinders are firing properly.

A P0300 OBD code indicates a random or multiple misfire. If the last digit is a number other than zero, it corresponds to the cylinder number that is misfiring. A P0302 code, for example, would tell you cylinder number two is misfiring. Unfortunately, a P0300 doesn't tell you specifically which cylinder(s) is/are mis-firing, nor why.
Symptoms
Symptoms may include:

* the engine may be harder to start
* the engine may stumble / stumble, and/or hesitate
* other symptoms may also be present

Causes

A code P0300 may mean that one or more of the following has happened:

* Faulty spark plugs or wires
* Faulty coil (pack)
* Faulty oxygen sensor(s)
* Faulty fuel injector(s)
* Burned exhaust valve
* Faulty catalytic converter(s)
* Stuck/blocked EGR valve / passages
* Faulty camshaft position sensor
* Defective computer

 

What does that mean?

* the engine may be harder to start (Engine starts fine)
* the engine may stumble / stumble, and/or hesitate (Yes sometimes)
* other symptoms may also be present

Causes

A code P0300 may mean that one or more of the following has happened:

* Faulty spark plugs or wires (Replaced multiple times, no change)
* Faulty coil (pack) (Brand new, less than 2 years old. No change)
* Faulty oxygen sensor(s) (All 4 replaced, no change)
* Faulty fuel injector(s) (Replace a few times, No change)
* Burned exhaust valve (New ENGINE, no change)
* Faulty catalytic converter(s) (Replaced 2 years ago, no change)
* Stuck/blocked EGR valve / passages (Passage and Valve replaced, no change)
* Faulty camshaft position sensor (Yes I even replaced this with no change)
* Defective computer (Also been replaced with a diffrent one twice, no change)

 

Ron, did you have ur heads rebuilt? maybe a lifter is not functioning correctly?

 

Diffrent engine. So the heads were replaced, and it's the same issue I had on the old engine and new.

 

FSR is coming up to norcal for a week to do some work. maybe u can wait on them? i think they're coming up sometime early next year.

 

I've got no real choice right now but to wait, but I'm so sick of this car I think it's time she goes to a new home or the junk yard.

 

sell me the lips

 

Going to... Out of idea's on how to fix this stupid F'ing car.