What db are people's exhaust and setups??

Discussion in 'Engine, Gearbox, Exhaust and Air Intake' started by Cliosport-carl, Jan 8, 2018.

  1. Cliosport-carl

    Cliosport-carl Winner - POTM May 2017 Gold Member

    759
    clio 197
    I'm wondering as it is playing on my mind and I know no two cars are the same but I'm worried about mine at Bedford it was at 97db but since then it's had the de-cat fitted personally I think it's quieter but still..

    I'm running a non res pms system with the toyo decat is anybody else running a similar set up ??
     

  2. Benno

    Benno Gold Member

    Well you heard mine, Scorpion resonated with decat and standard manifold, 96dB...reluctant to do anything with the manifold as much as I'd like a Toyo...
     
  3. Car.crash

    Car.crash Paid Member

    112
    Clio
    Toyo manifold
    Miltek cat
    Miltek resonated cat back.
    86db Cadwell park
     
  4. Cliosport-carl

    Cliosport-carl Winner - POTM May 2017 Gold Member

    759
    clio 197
    I've just read on the pms website it says with the non res system and there manifold which is fully de carted it will be 98db at 4500 but still interested in more readings.
     
  5. papa

    papa Paid Member

    37
    Clio 200
    Akrapovic full system, KTR induction, cold October morning at Thruxton but well warmed up and increased revs very slowly

    I think the chap said 77! I repeated it to him and there was no response, so guess it was 87; either way, win :smile:

    Don't know the drive by dB; a previous car I had with high flow cats passed static but failed drive by at Bedford & Brands

    This setup sounds amazing; you probably know that already! It's fine as a daily driver; quiet on low throttle & drone-free :smile:
     
  6. Probably get booted off Bedford tbh with a decat mani, decat system and non-res!

    I run an R3 manifold and Akrapovic and got booted off. Static was like 93 or something :worried:

    I used to run with the R3 and fully decated and non-res Supersprint, that thing was 97dB static iirc, and was insanely loud! That one got me booted off at Combe and they don't even have drive-by meters!
     
  7. Cliosport-carl

    Cliosport-carl Winner - POTM May 2017 Gold Member

    759
    clio 197

    Well think might just have to get the mid box I had been thinking I was going to but will have to get it come March..
     
  8. all depends how loud the rear setup is on the PMS I guess, but yeah given my experience with the Akra (which is by and large considered one of the quieter systems I believe), then I would say at least a centre silencer and potentially a sports cat too even. As I can't see my R3 manifold being substantially different noise levels to a Toyo - I think the nature of them both being tubular and pre-cat delete's they must be similar enough in that regard.
     
  9. Cliosport-carl

    Cliosport-carl Winner - POTM May 2017 Gold Member

    759
    clio 197
    I
    When I was there in November I had the pms system however I hadn't fitted the manifold yet and it was fine. So hopefully the box would the equivalent to the pre cat
     
  10. Johnny 99

    Johnny 99 Platinum Member

    Inverness
    Clio Renaultsport 200
    Standard manifold, Cobra resonated cat back plus Cobra sports cat 88db at Castle Combe beginning of November.
     
  11. Cliosport-carl

    Cliosport-carl Winner - POTM May 2017 Gold Member

    759
    clio 197
    I've got a maplins db tester and it was the old 15£ one and not massively convinced it's right. However today I used it and got a reading of 110-105db so will defiantly need a new midbox before the track days..
     
  12. petercronin

    petercronin Paid Member

    218
    North East England
    LY FF Clio 200 with Cup Pack
    Cliosport-carl likes this.
  13. Flange

    Flange Paid Member

    63
    Clio 197
    just a non res milltek on mine was 99db at bedford... got a stainless manifold as well now so going to check out what it reads at brands who have a 105db limit :smile:
     
    Cliosport-carl likes this.
  14. Marsch

    Marsch

    498
    Berlin, Germany
    Stealth Grey RS 200
    Standing it's 80,5 dB (A) @ 3750 rpm measured at 45° half a meter away with an Akra Evo (no decat; just center resonator and exhaust). In the papers it's listed with 77 dB and we've an officially allowed tolerance of 5 dB on that over here.

    Sidenote: The new Hyundai i30N is listed with an unbelievable 109 dB. I don't know how they managed to get that approved. This is just insane!
     
    papa, Johnny 99 and Cliosport-carl like this.
  15. Johnny 99

    Johnny 99 Platinum Member

    Inverness
    Clio Renaultsport 200
    Now THAT is interesting! I'd thought of the i30N as a possible future car, but if it's going to be a problem at track days it's a definite no no!
     
  16. Marsch

    Marsch

    498
    Berlin, Germany
    Stealth Grey RS 200
    Like said in this thread it already comes with a fold/valve exhaust. In race mode the "flap" is always open but I assume you can close it in custom mode. So this shouldn't be that much of a problem. The question is if there's any difference in power output between opened and closed which could be the case.
     
    Johnny 99 likes this.
  17. dr gonzo

    dr gonzo

    34
    clio 3 rs cup
    A couple off weeks ago i did a trackday at zolder where the db limit is 95db and there where 2 i30N's driving, they had no probem with the db limit and they pops and bangs like crazy, nice cars they are.
     
    Johnny 99 likes this.

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