Just curious if anyone has had there car run richer/leaner, more pressure etc after Walbro GSS340 was installed?

 

Shouldn't matter whatsoever. Fuel pressure is controlled by the FP regulator, not the fuel pump.

 

Thats what I figured. The pump is working. I installed two things at once, injectors and pump. I retuned for injectors and its not running too well. I sent the injectors off to get flowed, cleaned etc etc. I was trying to eliminate possibilities with the pump. Injectors sat on a shelf for over a year, and I didnt clean them other than with injector cleaner in a bucket and spray.
Thanks

 

Have you checked the fuel pressure?

 

43.5 psi with vacuum off. Fluctuates a little as the fuel damper installed on Vettes isnt there as Racetronix tells you to install rubber hose in place of it.
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