roofum
Enthusiast
what is the most economic way to upgrade air flow in and the exhaust system out .2001 viper needs more flow .i do not want it to loud .going to trade up next year would still like to get this baby to run better
restrictive factory catalytic converters
- Thread starter roofum
- Start date
Saint_Spinner
Viper Owner
Remove the cats or get hi-flow cats.
big-n-italian
Enthusiast
factory cats are EXTREMELY restrictive.
after i took mine off, i looked into one end of the cat, and pointed the other end directly at the sun. the smidgion of light that was visible, was a little bigger than the size of that -------> .
after i took mine off, i looked into one end of the cat, and pointed the other end directly at the sun. the smidgion of light that was visible, was a little bigger than the size of that -------> .
2001 GTS
Enthusiast
^^I did that too
Couldn't believe I couldn't see through it at all
Couldn't believe I couldn't see through it at all
roofum
Enthusiast
what kind of cats did u guys use to replace factory cats
radta7
Viper Owner
Random Techs
big-n-italian
Enthusiast
i was suppose to replace the cats?! 
roofum
Enthusiast
tanks guys
V10SpeedLuvr
Enthusiast
If you replace the cats or completely remove them, what type performance gains can you expect? I know its gonna be lots louder (I already dont have a muffler). Also, how will gas mileage be affected?
