Catco And X-force Cats Whats Your Opinion?

[rondofj]

I have a full 3" exhaust and from the thread above, guys are saying I need AT LEAST a 3.5" or larger cat. Now the issue is: what is that 3.5", is it the size of the inlet/outlet pipes on the cat or is it the size of the cat body???? Someone please clarify on these goddamn cats..meoww

[scotty nm35]

Cat body, so you need a 3 inch 100cpsi metal cat with a 4 inch body.

Something like this...

http://cgi.ebay.com.au/3-Metal-Cat-High-Flow-100-CPSI-TURBO-V8-DRAG-RACING-/200511014706?pt=AU_Car_Parts_Accessories&hash=item2eaf634732#ht_1623wt_905

[bored33]

I have a Ballistic cat on my car, very nice so far.

I have melted 3 cats in my driving life time but that was because I used a cheap metal internal cat and ceramic internal cats. Bit the bullet and just spent the extra bit for something more reliable which apparently out performs most high quality cats.

[rondofj]

thanks Scott, its a shame a lot of good things are Melbourne based these days, like that cat, even all the Skyline parts for sale, lots are from Vic, where are all the Sydney skyline boys?

I was confused on the cat because nismoid earlier mentioned in this thread about tapering up from the exhaust to the larger cat pipe. So I thought the 3.5" would be the cat in/out pipes not the body.

[rondofj]

so I got my 100 cell metal cat (5" body, 3" inlet / outlet) off ebay for $150 brand new, just wondering if a 3" dump would provide noticeable gains as well, this one :

http://www.justjap.c...&cat=276&page=2

current mods are: full 3" exhaust from turbo back with 3" front pipe (except dump), boost controller at 12psi, FMIC, fuel pump, Nistune, pod in custom box etc.

will the dump provide like only 3-5rwkw?? If so, then not worth it IMO, its a street car with stock turbo, and my goal is response, response, response, trying to get close to the response of the Mines R34 GT-R - that tacho goes up so fast ! !! And yes I know I'm nowhere as close, at least two thirds the response of the Mines car would be schmick!!

[Turbotonic]

i would go with HKS system not that dare from just jap

[rondofj]

so whats wrong with the just jap dump?? is it a b*tch to fit - misalignment/ pattern all wrong etc??? as is common with just jap crap, though its kinda ok not crap hee hee..

[wolverine]

Go for a bellmouth dump. There is no chance the wastegate will foul on them and they will probably make a whisker more power.

[Turbotonic]

the split dump pipe is gonna make some difference if i was gonna change any part of the exhaust it would be the dump because the stocks are so restrictive

so I got my 100 cell metal cat (5" body, 3" inlet / outlet) off ebay for $150 brand new, just wondering if a 3" dump would provide noticeable gains as well, this one :

http://www.justjap.c...&cat=276&page=2

current mods are: full 3" exhaust from turbo back with 3" front pipe (except dump), boost controller at 12psi, FMIC, fuel pump, Nistune, pod in custom box etc.

will the dump provide like only 3-5rwkw?? If so, then not worth it IMO, its a street car with stock turbo, and my goal is response, response, response, trying to get close to the response of the Mines R34 GT-R - that tacho goes up so fast ! !! And yes I know I'm nowhere as close, at least two thirds the response of the Mines car would be schmick!!

[rondofj]

think i will just do the cat for now and the dump can go in later if required, how many inches is the stock R34 dump btw??

[Turbotonic]

think i will just do the cat for now and the dump can go in later if required, how many inches is the stock R34 dump btw??

Dump pipe

try this its already been done a million times