Whatsup everybody

so this car starts great idles good revs good. Nothing weird with clutch in or in neutral. Goes in reverse fine, accelerates good. soon as i go into first it looses rpms and dies. I can rev to about 2k and ride the clutch and accelerate about 10mph, but at a certain point of release it dies, instantly cuts out. Can get it in 2nd and ride it up to about 15mph.

Have tried two different throttle bodys,injectors,sensors, quadruple checked timing firing order, new fuel pump, grounds & connections... No idea what to try next.

Any ideas? I checked fuel pressure and am getting 45befor filter, 41-48ish after filter

Any ideas at appreciated!
I will be checking compression later today

 

Im really leaning towards a clog in the fuel system. How much pressure should i have after the filter?

Is there any good way to test pressure fluxuation? The old fuel pump was COVERED in rust..

 

Map sensor

 

What are the odds of 2 diffetent map sensors running exactly the same? Maybe theyre both bad.. Lol i swapped the intake along with all sensors and car ran exactly the same

 

Check the plugs, it sounds like they're fouling out. Double check ground at thermostat. Did you get a chance to test sensors to make sure they are in spec? A car will start with bad map/ bad map wiring, but it acts up as load increases. If they are tb mounted sensors, make sure they are securely in the tb and not hanging on by vacuum hose. That will cause issues

 

Make sure your TPS plug hasn't been swapped with your IACV plug....Just a thought, doubt that's your problem though.