Thinking of putting a de cat on my car does it make much of a diffrence in power or does it just sound as if it does. Thanks

 

I have tried it in the past on a lot of cars and measured them on a rolling road.
Usually it gives you 0 (Zero) to 1 (One) bhp extra. Without any other changes to the engine pretty useless, except when the current cat is blocked.

 

Would it need a new compleat exhaust on it for a de cat to make a diffrence.

 

It doesnt really release any extra horses but it does change the note of the exhaust
I would advise fitting a complete stainless system, the engine will breathe a bit better as stock exhaust is restrictive. Ull like the note change of the exhaust,

 

Ok thanks boys think i will as i got a original ford system on it.

 

I have a complete magnex inc de cat on my 4x4 ,this with a superchip and a decent cold air feed will give you around 16bhp increase

 

That sounds good i can see me getting a new system and a superchip then thanks mate.

 

no problem

 

my wifes car ( escort gti) has a piper stainless rear section

ive just fitted a stainless 4 branch with decat and the difference is unreal

the engine revs alot more freely and harder

pulls harder and sounds good to

now im looking for a decent induction kit
some 130 spec cams
super chip

maybe get a spair head and get it ported

 

I know someone that has done all these mods and reached 139bhp on the dyno

 

Thanks for the replys the reason i asked is because someone told me to find out about putting a de cat on before i do it as it might lose power and i dont want that as it hasnt got that much to start with.

 

is that good then

 

for a normal 115ps without a turbo or bike carbs etc it is

 

1-pd does your car pass its mot when it is de-catted?

 

without the superchip it would fail totally , it just squeezes through with it when running really hot which is a relief

 

Ok mate where about is the cat? Is it in the manifold on a mk6

 

Its just after the manifold.

 

I had a rs van and took the egr off and a decat and i had 164.4bhp on the dyno!

 

So I'll need too buy a whole system and new manifold come mot time! Gutting

 

my old rs2k 4x4 always passed the emissions without the cat being fitted

 

no point in having a decat if running with a stock system tbh as its pretty restrictive, the decat can be fitted onto the std manifold ok , what was mentioned was to have your original manifold modded to remove the APS to get the most out of your exhausts air flow but you dont have to, and run with a power/superchip 164 ish is a easy target

 

I don't have a stock system I have a 4-2-1 stainless manifold then full 2 1/2" system so I'll need too buy another system for mot time?

 

you may be lucky if running a decent chip to aid better fueling, when I first took mine for a mot it was way up, then fitted a superchip and and it squeezed through

 

Not superchipped

 

Mot regs change next year, it will be a fail if the cat is not fitted on a car that it should be even if it passes the emission test

 

Oh yea so they do so cat time in march for me

 

unless you know a freindly tester, who tells you folk the de-cat was fitted after the mot of course