Carrying on the theme - Quiet exhaust on a JCW

Carrying on the theme - Quiet exhaust on a JCW

Author
Discussion

Boycie100

Original Poster:

59 posts

89 months

Monday 17th September 2018
quotequote all
I have a 2012 R58 JCW which I have had for a year now. It hardly makes any pops, cracks at all from the exhaust, which is really disappointing. I get the occasional pop when engine is well warmed up and driven very hard, but even this does not guarantee it will always happen. Car has had a decoke and been mini dealership serviced by me and the previous owner. Yes it is in sports mode- am I doing something wrong or is it a mapping issue?? Any help/advice gratefully received.

steve-5snwi

8,997 posts

100 months

Monday 17th September 2018
quotequote all
You need a sports Cat

CrippsCorner

3,015 posts

188 months

Tuesday 18th September 2018
quotequote all
Milltek non-res? smile

GiveItSomeWellie

3,040 posts

203 months

Tuesday 18th September 2018
quotequote all
Disconnect then reconnect the battery.

Boycie100

Original Poster:

59 posts

89 months

Tuesday 18th September 2018
quotequote all
CrippsCorner said:
Milltek non-res? smile
Thanks will have look at them.

Boycie100

Original Poster:

59 posts

89 months

Tuesday 18th September 2018
quotequote all
steve-5snwi said:
You need a sports Cat
Cheers hadn’t given it a thought

Boycie100

Original Poster:

59 posts

89 months

Tuesday 18th September 2018
quotequote all
GiveItSomeWellie said:
Disconnect then reconnect the battery.
Will definitely be trying that as a starting point, before committing to the expense of an exhaust 👍

Mr Ralph Jolly

44 posts

99 months

Tuesday 18th September 2018
quotequote all
What grade/brand fuel do you use?

Boycie100

Original Poster:

59 posts

89 months

Wednesday 19th September 2018
quotequote all
Mr Ralph Jolly said:
What grade/brand fuel do you use?
Shell super I was told to use super unleaded but is makes no difference??

Mr Ralph Jolly

44 posts

99 months

Saturday 22nd September 2018
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Boycie100 said:
Shell super I was told to use super unleaded but is makes no difference??
Its taken 8 tanks of super and 4000 miles to get my 2015 R58 popping. I now get a regular double bang on throttle lift off.

OldGermanHeaps

4,223 posts

185 months

Saturday 22nd September 2018
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Try throwing a match in the tank after filling it with super, thats the only time road cars should pop and bang.

LukeSi

5,758 posts

168 months

Saturday 22nd September 2018
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Sports cat or decat with stock fjcw exhaust.
https://youtu.be/RFyaqsBquIo
Obviously pops and bangs aren't stock but gives you an idea.
My car is manic stage 3.
Exhaust is fjcw and decat.

johnwilliams77

8,308 posts

110 months

Saturday 22nd September 2018
quotequote all
Don't do it, there are enough fake farting stty sounding cars on the roads.