The cars a boosted and built d16y8 that has around 2k miles on the build. The problem I'm experiencing is the car will run from 30 seconds to a couple minutes and will die almost like something got tripped. Once it dies it usually will not start right back up, sometimes it will but it will run very lean and need to be revved to keep alive but it runs terrible.
So far I've compression tested it and its even across all cylinders (125 all across, has low comp vitaras).
Checked to make sure I have spark at all coils which it did, plugs are pretty burnt from running mostly rich but they've been fine.
Car keeps fuel pressure around 45 to 50 psi consistently and does not drop, checked at the rail.
Cleaned the throttle body up and made sure there's no air restrictions any where, also swapped main relay with a confirmed working one.
Kind of at a loss with it, any suggestions would be appreciated.

More info on the car,
Tuned with a snake emu on hts, huntertuned decapped 1000cc injectors, cheap turbo kit, built bottom end w/ low comp vitaras and speed factory rods, bc valve springs, walbro 255, yada yada

 

Any CELs when it dies?

can you hear the fuel pump prime when you try to re-crank?

What is your battery voltage like when the car is running?

 

No CELS, and yes the pump is priming verified with fuel pressure plus I can hear it. Battery is 13+ volts and charging when its running

 

I've experienced a problem like this in the past and it was the ignition switch on its way out.

 

Ill check into it thanks, would the engine still be turning over if that was the issue or does it just cut spark?

 

Yes the car will still turn over In most cases.. Try starting the car and hold the key after it starts, hold it in the position just before the crank position to see if it holds steady and run normal to kinda rule out the ignition switch. I was thinking of a possibility of the ignitor inside the distributor going bad. You can swap it out for a civic or integra one if from the wreckers to try out. Fairly easy to change..
That or if you know of anyone who has the same distributor you could borrow to test in your car. Sometimes a bad dizzy can lead to mysterious problems and not throw a cel.

 

sounds like the ignition timing and/or mechanical timing is off.
125psi after a rebuild is SUPER LOW. I was getting close to 195psi with my Vitara setup...

 

Ill try it out and post the results thanks!

Beats me, I've gotten mixed opinions on it. Most said its fine

 

Sorry I messed up on my response about holding the key while in its running position after starting.. If holding it does make a positive difference then that may be the issue, if there's no change from holding it to letting it go then you could kinda rule that out.. just wanted to clarify..