Hey I have a 1996 Nissan Maxima 5-Speed...If I start the car and drive it right away its fine runs great, and strong! But after driving for a couple mins and stuff it starts bogging kinda bad! If im at a stop and I go to take off I need to give it a little more gas to get it moving and it boggs an slowly gains its power back...I did have the SC Kit on here and I did put a Walbro 255HP fuel pump and I havent removed it and I have stock injectors....Also it back fires like crazy! Big pop after every shift if Im guning. Heres my mods...I think its the fuel pump is sending to much fuel and the stock injectors are being clogged up. What do you guys think?

Mods:

Y-Pipe
Test Pipe
Megan Racing Cat-Back
ZEX Spark Plugs (For Turbocharged/Supercharged/Nitrous Applications)
Walbro 255HP Fuel Pump
Cold Air Intake
Stock Injectors
Cut Speed Limiter Wire In ECU

 

What could it be people?