To keep it short, ill just get into details. My tune is on 3 inch TB. Went to straight pipe, also 3 inch. Now I'm back to stock WRX DP,midpipe, and sti axleback. How will my stock DP midpipe and sti axleback interfer with the tune? My plan is to go back to 3 inch some time in the future, but if i find something quite with slight rumble. For reference: 2002 wrx vf43+supporting mods.