To de-cat or not to de-cat that is the question.

[Mr R.]

Hi all,

Im thinking about de-catting my PH1, I would like to know the pros and cons.

Will the car gain any more power, be more free revving or will it just make more noise?

Is it a worth while thing to do?

I don't used to car as my daily and its running a KTR single box stealth.

There is future plans to fit cams and a re-map or is it worth doing a re-map if i do de-cat it?

Your input will be a great help

Thanks in advance.

S.

 

[Cookson]

I found mine a little more free-revving, but lost a little torque.

It sounded quite "tinny around 3k. Some days I liked it, other days it got on my tits.

 

[Mikeyjp]

Have a high flow cat fitted instead

 

[JonnyW]

Mine is very 'boomy' at 3k.. So bad that I don't sit at 65/70mph, either 60 or 80..

 

[matt911]

Mine like Cookson, sounds tinny at lower revs sometimes but i dont mind it. I kind of like it plus i got pops n bangs map so i needed it

 

[Dan@SJM]

Decatted single box stealths are crazy loud.

 

[itsjamz]

I've got decated single box stealth on race car. Yet to be noise tested :s

 

[Jekyll]

Will also need to be decatted if you're thinking of 98ron map with p&b.

 

[Cookson]

Decatted single box stealths are crazy loud.

Yes. Yes they are

http://youtu.be/zaLwM0kpSY0

 

[matt911]

That sounds terrible.

 

[Cookson]

Yup, it did indeed

 

[GrahamS]

Do it.

Made a massive difference to mine

 

[Beasley Clio182]

Do it !!! Mine drives loads better IMO !

My 182 felt like a completely difference car with a stainless and decat ! Best mod I did ! Got a good few pops and bangs as well till I put the Rs tuner 98ron map on !

 

[Mr R.]

Will also need to be decatted if you're thinking of 98ron map with p&b.

If i do decat then im not going to add the P&B map mate.

 

[Mr R.]

Decatted single box stealths are crazy loud.

Just loud, no real benefits apart from that?

 

[Brett]

I love my decat on my 182. Combined with the Scorpion SRN019 exhaust it isn't overly boomy on the motorway (far less than a standard twin silenced ktec stealth on my 172 was) and it sounds lovely when going through the gears.

 

[gez 172]

Yes. Yes they are

http://youtu.be/zaLwM0kpSY0

O.M.F.G... May aswel drive with no exhaust lol. Probably sounds the same too

 

[Tommo.]

When I had a decat there was a noticeable increase in mid range power and the car generally felt a lot more eager.

However, was it worth driving a car that was illegal and therefore uninsured? No imo...

 

[The Fatty]

When I had a decat there was a noticeable increase in mid range power and the car generally felt a lot more eager.

However, was it worth driving a car that was illegal and therefore uninsured? No imo...

decats arn't illegal. Just make sure you have 'exhaust modifications' down on your insurance so its covered.

 

[Flat Eric]

I'm always in two minds whether to decat my yozza........ Maybe a bit too loud?

 

[Kyle 86]

Do u have a supersport stealth system? If so leave the cat on as it would be stupidly loud

 

[Kyle 86]

I'm always in two minds whether to decat my yozza........ Maybe a bit too loud?

Would be well loud but yozza's sound nice decatted

 

[StevenMc29]

[video=youtube_share;LBwv79xfgJo]http://youtu.be/LBwv79xfgJo[/video]

 

[Mr R.]

Do u have a supersport stealth system? If so leave the cat on as it would be stupidly loud

I have the single box one, I only do around 2.5k miles per year in the car.

Dont know what to do...

 

[The Fatty]

do it, then if you don't like it undo it and sell the decat on here. If you decide to keep it though, just make sure you declare the wholes exhaust system as aftermarket on the insurance.

 

[Kyle 86]

I have the single box one, I only do around 2.5k miles per year in the car.

Dont know what to do...

It will be fine. If its a straight thru pipe all the way through (no centre silencer) then its way 2 loud

 

[plymcl172]

I wouldn't de cat my car if I were you but I am not you so I dunno

 

[Mr R.]

It will be fine. If its a straight thru pipe all the way through (no centre silencer) then its way 2 loud

I have no center silencer, just the rear box.
Might just leave it with the cat on and get an RS tuner

 

[Kyle 86]

I have no center silencer, just the rear box.
Might just leave it with the cat on and get an RS tuner

Dont dare take the cat off then haha

Try and get a mid section for it then decat it. I dont rate the rs tuner. Get it mapped by someone

 

[Ryanph1rs]

Ive Got a full oreca system and its loud like cool loud though sounds like its really going for it " usally when it is " low down under 4k though noise isnt an issue.... I have noticed it almost feels slower with a flat spot low down when you hit the loud pedal hard its fine..... if youre buying/having a system made yeh do it but if youre just thinking of paying £120 for a piece of pipe thats a c**t to fit i wouldnt bother....

 

[Dan@SJM]

Ive Got a full oreca system and its loud like cool loud though sounds like its really going for it " usally when it is " low down under 4k though noise isnt an issue.... I have noticed it almost feels slower with a flat spot low down when you hit the loud pedal hard its fine..... if youre buying/having a system made yeh do it but if youre just thinking of paying £120 for a piece of pipe thats a c**t to fit i wouldnt bother....

I didn't think yours was that loud lol

 

[Ryanph1rs]

I didn't think yours was that loud lol

Really haha Everyone gives me stick about it.... Im interested now to see what other systems are louder??? lol " child at heart here "

 

[itsjamz]

Hopefully my decated super sport stealth will pass noise tests

 

[Mr R.]

I think im going to hold fire untill I here a car that has been, should be lots at ccs.

Im not over keen on loosing torque low down as these cars need all the torque they can get.

 

[Beasley Clio182]

I think im going to hold fire untill I here a car that has been, should be lots at ccs. Im not over keen on loosing torque low down as these cars need all the torque they can get.

it does affect low down torque but I used a RS tuner map and decat and its never driven so well in my opinion as for noise here's mine , it's a full ktr janspeed un-silenced centre and decat

http://m.youtube.com/watch?v=W4U45VavIJs

http://m.youtube.com/watch?v=hnzcbGICEVA

 

[Mr R.]

Hmmmm not as loud as i thought it was going to be, sounds nice at revs.

If i go for one then i will also have to get a RS tuner on it, not going to have pops and bangs though.

 

[Beasley Clio182]

Hmmmm not as loud as i thought it was going to be, sounds nice at revs.

If i go for one then i will also have to get a RS tuner on it, not going to have pops and bangs though.

It isn't dead loud no where close to a yozza, it's not quiet though !

I couldn't recommend the RS tuner enough , seriously makes the car a different one , not just the extra performance but how smooth it drives now and the better MPG ! Before I let off the throttle after full acceleration and it was like someone braking , now it goes up and down the rev range 100x better !

Plus around town I get 31-33 mpg now !

Thats with the 98ron map , I didn't consider the P&B Map , it can't be good for your car lol !

 

[Mr R.]

Cheers for all of your help mate, no im not going P&B it will end up driving me mad plus im 37 so should grow up...lol

RS Tuner and De-cat here we come...

 

[Beasley Clio182]

Cheers for all of your help mate, no im not going P&B it will end up driving me mad plus im 37 so should grow up...lol

RS Tuner and De-cat here we come...

No problem mate here to help ! you will love it ! Haha we all 'should' grow up , some off us a lot slower haha