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					Originally Posted by Stl-986  First thing, are there any codes?  With the way you are describing it, there should be codes.  MIL ever come on, flash?
 If you replaced the maf, was it aftermarket or porsche?  exact same pn?
 
 cps wont be the issue cause the car starts
 o2 sensor - maybe but you need to look at fuel trims & all of the voltages....or just throw parts at it
 icv - There isn't one
 throttle body - never hurts to clean it properly
 fuel pump relay - doubt it,the car starts & runs
 injector - possible
 intake leak - possible
 
 Proper diag is needed before just doing things.
 
 Video also helps to show what it is you mean.  You say constant throttle it is ok, but that is putting load on the car...then you say putting load on the car causes it.  Kind of confusing with that.  Load is anything above idle.
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After market MAF
Nope, no codes, no MIL, doesn’t flash 
Throttle body now all cleaned 
Yes was thinking of doing a fuel pressure test STL- hoping to get a kit tomorrow 
As for the injector- is there a a way to test at home or is it a whip out and take to a specialist thing?