CAN SOMEONE HELP ME!!!!!!!

[JENDANALWAYS]

I RECENTLY CHANGED MY FUEL INJECTORS.
NOT LONG AFTER THAT MY CHECK ENGINE LIGHT CAME ON.
I HAD MY BUDDY RUN HIS SCANNER AND IT CAME UP WITH CODE P0470
I LOOKED THAT UP ON THIS SITE AND IT SAID IT WAS A EXHAUST BACK
PRESSURE SENSOR CIRCUIT MALFUNCTION. WHAT DO I DO TO FIX THIS PROBLEM? OH I HAVE A K+N INTAKE, EDGE PROGRAMMER, 4" TURBO BACK
MBRP EXHAUST WITH CAT DELETE. ALL OF THIS HAS BEEN ON FOR AT LEAST A YEAR WITH NO TROUBLES, JUST FUEL INJ.
ANY HELP WOULD BE GREAT.

[Dave]

Here ya go. Instructions on how to clean the EBP sensor and tube.
Welcome to guzzle's Exhaust Backpressure Sensor Cleaning Maintenance Web Page