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Hi,

Im looking to see if its worth while upgrading my cat. At the moment my car has 251rwkw @ 16psi, i am still running a stock cat.

Althou when i bought the car some years ago i was told that the cat had been bash abit. Also i'm running a miss-firing system and are able to produces large flames out of my exhuast when running it (which i through would not be possible when running a working cat)

So my question is, would all the abused my cat has taken over the years, make it pointless to upgrade to a highflow or straight-through pipe?

heres an example of how big the flames get 1291144911_l.jpg

Cheers Michael :/

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if you're shooting flames, then you probably have NO cat right now...

how imoprtant is a cat? very, if you plan on keeping the $10,000 fine in your investment portfolio

as long as its the same diameter as the rest of your exhaust, i don't think it matters if it says "high-fow" or not..

Yea if cops catcha, theyll tell u to fix it and might slap a canary on. If EPA catchu, you will get a 10,000 fine.

Man, im against noise pollution laws, but honestly, do u know how much ur polluting the air by not having a cat? The cat filters most of the more dangerous chemicals.

If every1 listened to markimak then we would all be wearing gas masks within 10 years. Im no "ultra left greenie" but honestly, there are very dangerous sulfurs in the exhaust that need filtering

The easiest way to get power is remove restriction its hard to say if it will or wont affect the power of the car, then again id say it would if the current cat is abused or punched out already. Simple task would be get one see what happens if it changes power change to a highflow, but id dare say if you have supporting mods and large exhaust front/dump and cat back it would be the bottle neck of your power :/ is that the answer you are after

michael yes it will

i had to replace my stock cat on the weekend (With a decat) due to it becoming blocked after 3 weeks.

car was tuned for 1.3-1.4 bar but when the cat became blocked it was strugling to see .9 bar, since the decat it's now shooting past 1.4 bar so time to get it back on the dyno for a tidy up on the tune

biggest regret was not having the cat removed prior to the power tune!

thanks guys :(

i have a retune coming out in the nxt few weeks and i wasnt sure if it was worth getting...

I have seen some highflow cats ads on EVO fourms in the uk which support antilag im not sure how ture this is but i may try to one of those as im running a missfiring system and dont wanna blow out a $600 highflow cat

I'd say definitely change it - i just changed my stock cat for a metal cat and cant believe the difference. Noticeably more power, smoother, and maybe better econ (got 470k out of the first tank after the change, i usually get 430/440. Maybe it was a one off...). YMMV as my stock cat appeared to be in reasonable condition - certainly no flames. FWIW i had 231awkw with the stock cat, must be like 250awkw with the metalcat.

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