Trouble codes... Help!

[MoNsTaMaCk24]

0181 Fuel Temp. Sensor A Circuit Range/Performance
0411 Secondary air injection system incorrect flow detected

This is for a 99 V6 mustang that now has dual exhaust. No Y pipe... I just need some help on what these things could be and how to fix... Car also has a lot of vibration lately too especially around 2800 RPM's... Thanks!

 

[Dragstr05]

The 0411 I'm pretty sure has to do with emissions. Not sure about the fuel temp sensor; most likely its bad and needs to be replaced. What I really dont understand though is how the two would be related.

 

[MoNsTaMaCk24]

So if I fixed the fuel temp sensor? Would that fix both? Or did the exhaust trip up the incorrect air flow? Mil eliminator fix that?

 

[Superhereaux]

both codes sound unrelated



i wasn't sure if v6's had air pumps but i guess they do. what was done as far as exhaust mods? were the cats deleted?