how much louder decat pipe v sports cat

[retrorider]

thinking of getting a sports cat and getting shot of the decat pipe on my s1 111s.will it reduce noise significantly which is what i'm after...your thoughts please

[Pied Piper]

Went from standard cat to De-cat to sports cat and not a massive difference between the sports and de-cat. The sports cat is slightly quieter, anlso gives the car a less harsh note.

Also have induction kit and sports exhaust.

[S Works]

Don't decat a 111S. The engine needs the back-pressure provided by the cat to work effectively. You'll gain noise but lose power.

[retrorider]

just got the car and the decat pipe is going as its too noisy...

[toxic frog]

i went from a decat to a sportscat on my s160 and although it is not quite as noisy, the noise i do get is much nicer... i have no intention of going back to the decat...

[alanr]

If as you say S Works, don't decat a 111s as back pressure is required - would a sports cat achieve this as I want to be a bit louder and I was going to put a decat on

A

[S Works]

alanr said:

If as you say S Works, don't decat a 111s as back pressure is required - would a sports cat achieve this as I want to be a bit louder and I was going to put a decat on

A

Get an Eliseparts or 2bular (who will make one to whatever noise you want) exhaust and an induction kit. That'll give you all the noise you need. A sports cat will give a little, but nothing like decat. Frankly I'd leave what you have on there and go the exhaust/induction route.

[alanr]

thanks for that ------- what I've actually got is an ITG Induction kit, 52mm throttle bodies, Elise parts 4 into 2 into 1, standard cat and Raceline silencer

It's excellent but a bit on the quiet side - I really want it to be a lot louder

Looking on the Larini site, their silencer seems the part (noisy that is)

A

[retrorider]

does the 4-2-1 make a significant difference in power or torque on a s1 111s ? is it worth the money...wouldn't mind one myself.