i have this exhaust fitted to rev3 tubby with downpipe
Had it tested at about 98db (98.8 i think....) for a trackday at bedford. It was ok (just) for their very strict drive by limit too..... well it was until the downpipe to turbo gasket started to blow and they threw me off......... 3 of the 6 fixing nuts came off i later found out!
What exhausts pass track noise tests without a cat? Turbo
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Re: What exhausts pass track noise tests without a cat? Turbo
Race Idiot wrote:cantfindausername wrote:I'd like to hear from someone with the Dep2Pro. Interested to see how this differs from the Dep2Regular.
I saw jonb's (I think) trackcar up at lukes on thursday and he had a Dep2 pro on his car.
Anyone else running a Fujitsubo RM01A? It's meant to be a bit noisier than the Legalis R but is also Jasma certified so it's not stupid loud.
Good point. I'll give Jon a shout and see if he's ever had any trouble.
Re: What exhausts pass track noise tests without a cat? Turbo
splintermcinnes wrote:you can't just put hayward & scott on the list and say its fine! they do complete custom systems to each customers requirements. i have a full custom manifold and cat-less system on my 3vz-fe V6 with quad pipes from a single transversly mounted silencer (355 stylee) and it burbles nicely and growls when provoked, all 4 tips are 3" inwardly rolled. i would say mine would pass, but then every one of thei jobs are generally different! so hard to generalise.
Matt
Yes, they do custom systems, but they also have a basic pattern for an MR2 (from when Ben F had his done many moons ago) - I bought mine in an IMOC group-buy, all of us got trackday friendly exhausts, we just chose which tips we wanted. One guy came along afterwards and specified smaller silencers (for a louder bark) but that was a deviation from their usual pattern.
If you go in there and ask for an MR2 turbo exhaust based on their standard pattern, it will be trackday friendly. So IMO it's perfectly fine for H&S to be on the list.
Re: What exhausts pass track noise tests without a cat? Turbo
Goto10 wrote:splintermcinnes wrote:you can't just put hayward & scott on the list and say its fine! they do complete custom systems to each customers requirements. i have a full custom manifold and cat-less system on my 3vz-fe V6 with quad pipes from a single transversly mounted silencer (355 stylee) and it burbles nicely and growls when provoked, all 4 tips are 3" inwardly rolled. i would say mine would pass, but then every one of thei jobs are generally different! so hard to generalise.
Matt
Yes, they do custom systems, but they also have a basic pattern for an MR2 (from when Ben F had his done many moons ago) - I bought mine in an IMOC group-buy, all of us got trackday friendly exhausts, we just chose which tips we wanted. One guy came along afterwards and specified smaller silencers (for a louder bark) but that was a deviation from their usual pattern.
If you go in there and ask for an MR2 turbo exhaust based on their standard pattern, it will be trackday friendly. So IMO it's perfectly fine for H&S to be on the list.
What that man said, but I do understand what you are saying.
Re: What exhausts pass track noise tests without a cat? Turbo
Been on brands with a Motoria Japspeed before without a Cat and it passed ok. I changed to a Berk now which is quieter so that would defo be allowed on track too imo.
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Re: What exhausts pass track noise tests without a cat? Turbo
I would wager that a buddyclub is far far too loud to go on a track! I'll see if I can measure it at the weekend but it's absolutely ludicrous.
Redrummo> You need to replace the nuts on your turbo studs with new ones, they're single use only and someone has reused them
Redrummo> You need to replace the nuts on your turbo studs with new ones, they're single use only and someone has reused them
IMOC-UK - the only club to win 'Best Club Stand' at JAE more than once, and twice in a row!
Re: What exhausts pass track noise tests without a cat? Turbo
1. Mongoose
2. Fujitsubo Legalis R
3. hks silent hi power
4. Phoenix Power Departure 2 105 db limit past.
5. Hayward & Scott
6. Berk
7. 5Zigen Pro Racer (Jasma Certified)
Way too loud!!
1. Apexi Hayabusa
2. 5Zigen
3. Blitz Nur Spec
4. RSR
5. Rogues Revision6
6. KO Racing (will pass with bung)
7. buddyclub
2. Fujitsubo Legalis R
3. hks silent hi power
4. Phoenix Power Departure 2 105 db limit past.
5. Hayward & Scott
6. Berk
7. 5Zigen Pro Racer (Jasma Certified)
Way too loud!!
1. Apexi Hayabusa
2. 5Zigen
3. Blitz Nur Spec
4. RSR
5. Rogues Revision6
6. KO Racing (will pass with bung)
7. buddyclub
Re: What exhausts pass track noise tests without a cat? Turbo
pretty much any exhaust that is jasma approved
pass for track
HKS hi Power
Kakimoto N1R will not pass for track
pass for track
HKS hi Power
Kakimoto N1R will not pass for track
Re: What exhausts pass track noise tests without a cat? Turbo
Redrummo> You need to replace the nuts on your turbo studs with new ones, they're single use only and someone has reused them
I did (Didnt know they were single use - better keep an eye on the others!)
Re: What exhausts pass track noise tests without a cat? Turbo
jdbecks wrote:pretty much any exhaust that is jasma approved
pass for track
HKS hi Power
Kakimoto N1R will not pass for track
Is it a given a Jasma approved will pass?
Re: What exhausts pass track noise tests without a cat? Turbo
1. Mongoose
2. Fujitsubo Legalis R
3. hks silent hi power
4. Phoenix Power Departure 2 105 db limit past.
5. Hayward & Scott
6. Berk
7. 5Zigen Pro Racer (Jasma Certified)
8. HKS Hi Power
Way too loud!!
1. Apexi Hayabusa
2. 5Zigen
3. Blitz Nur Spec
4. RSR
5. Rogues Revision6
6. KO Racing (will pass with bung)
7. buddyclub
2. Fujitsubo Legalis R
3. hks silent hi power
4. Phoenix Power Departure 2 105 db limit past.
5. Hayward & Scott
6. Berk
7. 5Zigen Pro Racer (Jasma Certified)
8. HKS Hi Power
Way too loud!!
1. Apexi Hayabusa
2. 5Zigen
3. Blitz Nur Spec
4. RSR
5. Rogues Revision6
6. KO Racing (will pass with bung)
7. buddyclub
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Re: What exhausts pass track noise tests without a cat? Turbo
afennell wrote:Is it a given a Jasma approved will pass?
JASMA pass level is 98dB IIRC. Not sure how they measure it though - presumably on a completely stock car, no decat etc.
IMOC-UK - the only club to win 'Best Club Stand' at JAE more than once, and twice in a row!
Re: What exhausts pass track noise tests without a cat? Turbo
hayward scott ones weigh in at 40kg
Re: What exhausts pass track noise tests without a cat? Turbo
im tempted to buy a hks hi power.
I know its been stated to pass above but still unsure what to do.
I know its been stated to pass above but still unsure what to do.
Re: What exhausts pass track noise tests without a cat? Turbo
lockys96 wrote:hayward scott ones weigh in at 40kg
Still waiting to see your pp car in the flesh, are you going to JAE?
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Re: What exhausts pass track noise tests without a cat? Turbo
I have a blueflame (with cat) on mine and to be honest it's not much louder than stock, just has more of a rumble. I would imagine it would pass easily as its pretty much the same as the mongoose.
Re: What exhausts pass track noise tests without a cat? Turbo
if i remember correctly, my RS-R measured 105db, with downpipe.
with bung insert and 10 metallic sponges it passed at 89db.
with bung insert and 10 metallic sponges it passed at 89db.
Re: What exhausts pass track noise tests without a cat? Turbo
any confermation on the Depature 2 Normal with Decat on what DB it passed at?