ok i just put my new 7x10 DAP injectors in and after u get over 2000rpm it starts like spitting and sputtering but under those rpms it runs amazing

 

What's your fuel pressure when it sputters out?

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i dont know my stupid p.o.s. glowshift gauge quit working i ordered a new one from autometer

 

List your mods on here and fill out your SIG. Do you have an aftermarket lift pump?

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stock lift pump, the injection pump has been turned up some but I cant remember exactly how much, I know its an industrial injection pump with a bigger fuel plate but cant remember which one. He had a stock tranny when we put the pump on so its not to big. s300 62/65/13 turbo. It was running great till we put the injectors in.

 

its a #5 fuel plate and 4k gsk that came in the pump and they had the starwheel maxed from when they built it. i slid the plate all the forward and the housing all the way forward and thats it on the fuel besides these injectors

 

So you have a decent amount of modifications. with bigger injectors and a turbo your starving your lp and injection pump. Your not getting enough fuel. I'd say. I'd buy a lift pump asap. Or you can wait til your fuel pressure gauge comes in and see what its reading at idle,2000 rpm and wot. But my guess is not enough furl to much air .

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could it be also too much fuel ? ... like loading up a bit and not enough turbo ? might need some timing adjustments now ....

 

If there's a stock lift pump he's gotta be running low on fuel. That's the first thing I would a upgraded before anything else. With an aftermarket turbo he's got enough air. He may need fine tuning but also needs more fuel. The injectors being larger need more fuel but there not getting it.

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might he need to spin the star wheel abit twards the engine possibly allowingmore fuel sooner ?