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f**k im gona bash mu cat gutless next tune, its a 100cell metal item tho..

Can you try dropping the exhaust first? I have a Venom 100 cell metal cat and would be interested to know if they do significantly reduce power. I believe they don't but hard evidence would be good! Need the cat for a cert but if they cost 50 -60 hp its days are definitely numbered! So far my RB30/25 is only making 220awkw at 15psi. I have been concentrating on fixing the oil control problem but have nearly sorted that and will concentrate on finding the power ( will be going to 18 -21 psi but should be making nearer 300kw at 15 psi :(

Can you try dropping the exhaust first? I have a Venom 100 cell metal cat and would be interested to know if they do significantly reduce power. I believe they don't but hard evidence would be good!

This too. My car is down about 50rwkw and we suspected the intake. Ive fixed that up but really hope my cat isn't the issue...

I have had a lot of catalytic converters drop power these days.

Sarge did we drop the exhaust on ur car when tuning?

What cat is Stao running?

We didn't drop the cat, Wolverine on here runs the same cat and makes the predicted power with his turbo as do a few other members. These 5" body venom cats only have 100 cells in a massive body so should be better than most cats. Send me a PM, I'm ready to bring the car back up to you when you are ready(just need to change my AC belt, its squealing and tearing lol). Stao doesn't run a cat...

My car has lost about 85hp at the wheels, thought the motor was getting sad, but got the leak down test an compression test done both came back fine. tune still seemed good just missing power (from 385 back to bout 300)

wondering if anyone had any ideas wot it could be? thank in advance :thanks:

Was both results on the same dyno?

alot of happy dynos out there haha

Can you try dropping the exhaust first? I have a Venom 100 cell metal cat and would be interested to know if they do significantly reduce power.

i have one running just shy of 400kw

ERD have had people making 400+ using them.

http://www.skylinesaustralia.com/forums/topic/379675-when-does-a-5-cat-become-a-restriction/

i have one running just shy of 400kw

ERD have had people making 400+ using them.

http://www.skylinesaustralia.com/forums/topic/379675-when-does-a-5-cat-become-a-restriction/

Have u tried a run without it to see the difference?

Does anyone else picture a furry little cat clinging onto the bottm of the car for dear-life? Lol.

I used to have a nismo cat. Made 252rwkw. Dropped it and put in a de-cat pipe.. Made ~262rwkw. Silly mistake.. Should have kept it on. The power gain barely (if at all) justifies the legal issues.

  • 3 months later...

I Had a 3" metalcat, tuned with it...then gutted it, ran it on the Dyno and we could add more timing without it knocking

Have since added big mofo front pipes and 3.5" decat - 3.5" cat back

Dead cats are good cats :)

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