Cat Delete good or bad to buy it?

[phi_ho1]

I have full cat back and down pipe plus a new header. Should i replace my factory cat and put in a cat delete? or it is not worth it to replace it due to the law. Please give me some advice on it.

[Terenus]

Please post your tech questions in the right section.

[EvolvedMCC]

it ain't worth the 1-1.5hp gain. not to mention the popos will smell you when they roll up behind you.

[fusionchicken]

it ain't worth the 1-1.5hp gain. not to mention the popos will smell you when they roll up behind you.


after a tune it's more like 5-15whp gain all over the power curve, esp. mid-range to top-end.

[Gear Grinder]

it is well worth buying a high flow cataletic converter.

[1WkdEvo]

I have to agree. I had a TO for a while and the stress it caused me everytime I had a cop behind me or was pulled over, was insane. Just get a Raly cat or HPC and be done with it. You won't lose hp like with a stock cat and you will feel better

[MoReRyCe]

if you have to ask the question.. dont get it...

[byebyesti]

had a cat delete on my STI and every time i got pulled over by a cop they never looked under the car. they made me pop my hood and i got more referee tickets than i count count, but they never got on their knees to check it out.

currently have a Perrin 3" TP on my evo with no hassles.

And trust me, you can smell it. but the hp gain, who cares. $100 for 10hp .. i'd pay $10/1hp all day long. (and i round up to $100, you can find them for $50 used -$80+new)

[thisxguy]

it all depends on where you stand. lol. it'll give you the most power, but you'll me messing up the enviroment, which means that the law can get you if you're caught.

but i havent heard of anyone who's been busted for having a test pipe...recieving that $2,000 emissions ticket. at the ref, they'll just send you back home...but no additional tickets

i have a RRE one for sale if you're interested O0

[byebyesti]

if you get a ref ticket .. just swap it out and put that cat back on for the referee .. then put the TP back on after O0

[GokuSSJ4]

I have to agree. I had a TO for a while and the stress it caused me everytime I had a cop behind me or was pulled over, was insane. Just get a Raly cat or HPC and be done with it. You won't lose hp like with a stock cat and you will feel better
youre recommending the rally cat , correct ? loll rally cat for stealth would be a good investment if you plan to run a catless system.
this kind of question has been cover, over and over... do a bit of search there's always pros and cons. At the end, it is up to you to determine whether is worth it or not...

[bash]

this topic has been beaten to death, I probably started one when I was a noob too.


RRE Rally CAT FTW --- when in stock duhhh

tp ftw - temporarily haha.

[fusionchicken]

you guys ARE aware that the Rally Cat is a test pipe right? it's just wrapped in a shell with some sound deadening material in it....basically it still stinks like shit.

[1WkdEvo]

Yeah, but it looks hella pretty

[GokuSSJ4]

you guys ARE aware that the Rally Cat is a test pipe right? it's just wrapped in a shell with some sound deadening material in it....basically it still stinks like shit.
thats why i mentioned catless system...

[jaydm73]

rre rally cat FTW

[ev0lution]

RRE rally cat, just got one and love it. its the best of both worlds. cops will think its stock + its a test pipe for the HP.

the stink ain't too bad. buy a good air freshener

[dabie]

smell is annoying if you DD your car

[Dirty Harry]

Just wear one of these if you can't stand the smell...

http://www.slipknot-metal.com/gallery/members/masks/images/masks-65.jpg

[Evolutionized]

im catless just make sure to push the recurculate button on ur ac and u will be fine... i dont even smell it. maybe its the Squash! haha

[Evolution22plus1]

what would an environmentalist say to this question?

[storm369]

just get an hfc :)

[darkevo]

im catless just make sure to push the recurculate button on ur ac and u will be fine... i dont even smell it. maybe its the Squash! haha


but if you're running with A/C on, less power!! A/C off man!

I've had both setups - catless and high-flow cat. Â*Though I loved the power of no cat, I decided to be more environmentally friendly and went with the high-flow cat. Â*This almost seems to be a test pipe but no bad smell, and not a fake "rally cat". Â*Has anyone done some dyno runs catless and with high flow cat? Â*I'm thinking maybe 4-5hp difference max. Â*I have the ultimate racing 3" high flow cat.

[dabie]

i think it may be more like 8-10whp diff, a cat really does rob power even if its high flow

[SoCalRedLine]

how bout...

BOTH...
a HFC for your DDing, and a test pipe for your track days
...where that extra 4-5hp makes a HUGE difference (/sarcasm)

Also, any modification to the exhaust system, cat and before, is grounds for an appt. with the state Ref. Possibly a HUGE ticket as well...

seriously, do what you want to your car.
If you want to run the risk of running a test pipe, and gain a whopping 5hp over a high flow cat, cause youre the ultimate street racer, then do so.

[vial8or]

i have the RRE stealth TBE w/ rally cat
love it hands down

[ev0lution]

how bout...

BOTH...
a HFC for your DDing, and a test pipe for your track days
...where that extra 4-5hp makes a HUGE difference (/sarcasm)

Also, any modification to the exhaust system, cat and before, is grounds for an appt. with the state Ref. Possibly a HUGE ticket as well...

seriously, do what you want to your car.
If you want to run the risk of running a test pipe, and gain a whopping 5hp over a high flow cat, cause youre the ultimate street racer, then do so.

ive heard from 10-15 awp from most everyone.

and i can definitely tell the difference with my rally cat.

rally cat ftw!

[vial8or]

Ya, you can tell the difference. That 15 extra hp can come in handy when you're racing somone with the exact same setup as you but they have a cat.
Happened to me a couple times

[littlejap33]

good for car= bad for enviroment

[vial8or]

^^lol environmentalists dont buy evos, they buy green cars.

[SoCalRedLine]

^my neighbor has a Green Plymouth Superbird, does that count?

[vial8or]

^^haha
why not

[Evolutionized]

im catless just make sure to push the recurculate button on ur ac and u will be fine... i dont even smell it. maybe its the Squash! haha


but if you're running with A/C on, less power!! A/C off man!

I've had both setups - catless and high-flow cat. Â*Though I loved the power of no cat, I decided to be more environmentally friendly and went with the high-flow cat. Â*This almost seems to be a test pipe but no bad smell, and not a fake "rally cat". Â*Has anyone done some dyno runs catless and with high flow cat? Â*I'm thinking maybe 4-5hp difference max. Â*I have the ultimate racing 3" high flow cat.


you dont turn the AC on you just Recirculate the air its the button next to the AC

[savior1974]

Just get the QTP 3inch Downpipe with electric cutout. I have one and its connected to my stock cat and stock exhaust. When its open, its better than a full 3inch exhaust. When its closed, its sounds stock again.

[JCRUZ]

smell is annoying if you DD your car


I agree.Â* I have a test pipe and DD my car.Â* The fumes gets annoying and your eye starts to hurt after a while.Â*

With performance, you can tell the difference when you punch it.Â* I use to only have a catback exhaust and when I punched it, i felt the restriction.Â* Now, it's like slapping on some breathe right on your nose before you go to bed.Â* Â*O0

[vial8or]

^^i dont get this smell thing
i have the RRE stealth TBE with their rally cat and dont smell any difference then with a cat
is it when you give it power? or just from regular driving?

[JCRUZ]

^^i dont get this smell thing
i have the RRE stealth TBE with their rally cat and dont smell any difference then with a cat
is it when you give it power? or just from regular driving?


With my car, you can smell the fumes whenever it's on even if you slightly crack open the window.Â* Close all windows, turn ac on, and push recirc button and no more smell.

Knock on wood, but i've had many cops follow, or drive by and never got pulled over for the smell.Â* Even next to a cop at a red light.Â* The only thing I see them do is listen to my exhaust and see if it's loud.Â* Although, I did get pulled over and got a ticket for 15% tint near San Diego.Â* Maybe you should consider that instead.Â* :grin:

[vial8or]

well, maybe its also cuz i have a resonator???

[JCRUZ]

That could be it. My exhaust doesn't have any resonators.

Btw, sorry for your loss on that evo. At least you're fine and replaced the car instead of a life. Congrats!

[vial8or]

thx man
just happy to be alive, well, and in an evo!
i have the rally spec resonator from RRE. its awesome and doesnt smell bad

[JCRUZ]

No problem O0 Drive safe out there. Next time, run over the damn thing. :grin:

[dabie]

maybe your sense of smell isn't that good, lol... there is no way you cannot smell the fumes if you have no cat when u are outside and the car is idling, resonator makes no difference

maybe you have a hfc?

[vial8or]

at idle ya, i can smell it. its just not nearly as bad as ive smelt other peoples set up.

[JDMboi]

THE COP ARE GOING TO PULL YOU OVER ANYWAYS FOR EXHAUST AND SEND YOU TO THE REFFREE WHEN YOU GO CHANGE EVERTHING TO STOCK