i just did a swap from my stock d15 to a d16y7 from my friends 99 civic
to start i have a 92 4 door and i kept my intake manifold, fuel rail and injectors, dizzy, ecu and harness
now the problem seems to be that my motor keeps back firing, timing was not messed with during swap and has already been checked and is on point, when the motor was in his ej he never had this problem but right after the swap its been doing this
also it only seems to do it when i try to punch at low gears, its just a continuos popping noise all the way until i get to like 3rd gear
can someone please help me on this

 

bmp

 

bmp
does anyone have a clue what could cause this and how i could fix it

 

Whats your BTDC at?

 

not sure
how could i check that

 

timing light pal