91lt1

i have a 95 lt1 motor in a 91 s10 comp retuned and all has hedman shortys and a 2.5 inch exh with flowmasters i replaced the o2s tp mass air and temp sensors new plugs and wires the egr is blocked with a plate and turned off in the comp there no cats or cat monitors and also removed from comp just got the thing back on the road and it is making a tapping noise out fo the pass side muffler area after it warms up any ideas wut it cud be burnt vlave or something any help would be great

Greed4Speed

Try LT1 tech instead of LS1 tech.

teke184

and some punctuation

sounds like an exhaust leak to me