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Enthusiast ![]() ![]() ![]() Joined May 5, '05 From mattoon, IL Currently Offline Reputation: 2 (100%) ![]() |
Hey i was just wondering if i were to remove the catalytic converter if it would add any horse power? or what about getting a "Y" pipe before the cat. so i can still have the cat. but have it go straight out when i want to race?
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![]() Enthusiast ![]() ![]() ![]() ![]() ![]() Joined Dec 8, '05 From torrance/carson, ca Currently Offline Reputation: 11 (100%) ![]() |
QUOTE(Batman722 @ Apr 9, 2006 - 12:21 PM) [snapback]419453[/snapback] ok first... most US Celicas have 2 cats (primary and secondary)- 94-95 STs have 2, 96-97 STs have one - the secondary, 94-99 GTs (94-95 cali) have 2, the 94-95 fed (non-cali) have just one, the primary. removing one or both of your cats will not "add" hp but will "free up" hp from your engine. Removing the secondary cat won't do much but removing the primary cat will give your engine a better (less restrive) air flow - removing both will be less restrictive obviously. How much you ask ? a free flowing exhaust will free up about 5-8 at maximum. That doesn't seem like much but these are economy engines, not performance engines, we are talking about here... removing these will increse and decrease a few things increase flow freeing up some hp with better responce throughout the RPM band the amount of harmful emissions emitted decrease gas mileage the so if i do my exhaust... i should remove my primary and keep my secondary? would my car still be legal if i keep at least one of my cats on there? This post has been edited by j0e_p3t: Apr 9, 2006 - 3:39 PM -------------------- |
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