Evening chaps.
My exige currently has a slightly rattly Hangar111 signature twin exit exhaust on it ( Elise 111R Exige S2 Signature Sports Exhaust | Hangar 111 )
I dont mind the sound of it as its pretty quiet and no drone. However I am curious if a “stage 3” exhaust would yield any gains , or would it just be louder and a different sound?
Stage 3 is VERY loud - at least mine was!!
Generally, exhausts make no power difference, just feel good (or bad) noise. I always like the Chris Tullett, Eliseparts, exhaust I had on my S2. It was nice and quiet and repackable.
I did quite a bit of testing on the dyno with my SC car, we found most exhausts made little to no difference, the manifold however made huge differences, one manifold made a huge loss when fitted and took 2 hours of mapping to eventually gain 5hp, it did however yield quite a bit of mid range torque though, not sure an NA car would care as much. We were trying to gain as much power as possible without going below a 2.9" pulley, ended up with ~310hp 285@ the hubs
Which mani was that @ade?
I am not desperate for more power , it was more the noise mine makes when on WOT making it sound like a jet fighter and restricted somewhere ( most likely the manifold now you mention it …
I also have a cat in place
Take your cat off and give it a shake. You wouldn’t be the first SC’d 2zz owner to have one start collapsing and might explain some change in noise.
Its not changed in note buddy. I just noticed the sound from videos of me on track.
Gotcha.
My Cat makes me nervous, it looks like my car has had an OEM cat failure in the past because it’s got a pattern part replacement on it. I’m sure it’s fine, but I’m expecting it to ruin a trackday at any moment.
The manifold was a big bore 2bular one from Jim, we ran it as a test product to see if it gained any extra power as I was running 300+ at the time, it was a mega big bore and I don’t think ever made another as it was so hard to make.
As for making better noise on track, silenced decat 
