De-cat performance

[rockport]

I may get round to fitting my de-cat in the next week, can anyone tell me if after having a decat fitted - did they notice any kind of performance increase? Ive got a 2.0ltr williams lump fitted and i hear that the williams responds well to breather mods - not sure how true this is?

Im also fitting a K&N air filter (to replace the standard OEM one using the enclosed standard air box. Do you think ill see any gains when ive fitted these both?



Cheers

 

[DeanRSi]

the decat you will notice the most mate. the car will seem more eager to rev as it will be less restricted. itll certainly free up a few horses as well.

 

[Tom_16v]

My valver had a very nice noticable difference when I fitted my de-cat.

Peak power and torque were only up around 1bhp and 1lb/ft but both were peaking 300rpm earlier. Mid range gains therefore showed gains of upto 5bhp and 5lb/ft.

 

[rockport]

 

[aaronc]

added on about 5BHP for me

 

[rockport]

Does it make your exhaust sound any louder also? I was just thinking that the CAT may also cut out some of the noise.

 

[DeanRSi]

ive got a silnced on mine and its not really any louder, pretty much the same as a cat to be fair. the un-silenced ones however are a bit louder.

 

[Ben H]

I had a non-silenced de-cat on my old 16V, which when added to the full stainless exhaust made a really loud rumble on idle. I kid you not, a de-cat on a 16V with an IK and stainless system will be VERY loud! The best bits are the flames and puffs of smoke; the worst bit is the Nova-esque noise on part throttle at 2-3000rpm.

Best £50 mod there is. Ill go for a silenced one for my otherwise standard Williams soon.

 

[weight]

took 0.3 seconds of my quarter mile time