Downpipes, CAI's and Warranty...

[Speed 3 Demon]

From speaking with my dealership, I know that altering any sensor in the Speed 3 (i.e. o2 sensor, maf sensor, etc) could jeopardize warranty work, should it be needed.
Just want to know how many of you have installed DP's/TBE's/CAI's and had a CEL or any other issues from doing so? I wanna get CP-e's catted downpipe and possibly a CAI, and wonder about reliability.
Thanks

[hatthi]

I go to Oakville Mazda and they're really cool with mods. I've got springs, CAI and short shifter. Maybe you should pick another dealer. Which dealer do you go to? I know they install perf parts on customers cars as well. Last time I was their they were going to install a CAI and BPV on a speed3.