St205 maintenance stuff..., What do you guys think it is??? Options

[injection]

Hey guys, so have a list of questions for you guys to see how good your mechanical skills are...
Just finished st205 swap into my 94 GT, this thing rocks! But for some reason around 4300rpm and up there is a strange hesitation, it feels like it should have so much more then what it has, ( PS. Already installed new plugs, wires are mint, new cap n rotor, as well as new coil, fuel filter, and walbro f pump,
As well I am getting back firing happening, was told my timing is out because of the back firing..is this true? If so could someone tell me the degrees the timing is supposed to be on a 205 engine,
Thanx for all your guys help...don know what I would do without this place.....

PS safe celicaing

[lagos]

did u get error code 54? , do u have original setup for intercooler water pump ? maybe u run in "lymph" mod

Nah. Tweak did all that stuff, he knew what I was doing for a intercooler set-up, and did the electrical to make the ECU think everything is fine...seems to have worked to, cause I definitely don't have a problem with boost...way to much actually, like try 20lbs! Will be testing actuator today to see it it's vacuum or mechanical.

Thats too much boost on pump gas and probably the reason youre feeling the loss of power is that the ecu is pulling timing. You need to figure out why its hitting that much and turn the boost down.