Ferrari 458 Speciale lowering the decibels UK registration.
Discussion
Can anyone help?
I am in the process of UK registering a Ferrari 458 Speciale. However it has failed the IVA test as the decibels have reached 115 at stationary.
I have had the vehicle inspected by 2 separate Ferrari specialists and can confirm it is a standard factory fit exhaust and has not been modified in any way.
I thought of putting an exhaust silencer/muffler on it just to get it through the test but I have been advised this will only bring the decibels down by 3 or 4.
The maximum decibels cannot exceed 99 so I need a solution to bring it at least 16 decibels down to pass the test. I have been informed that this can be a temporary measure in order to pass the test as long as we don't modify the carbs then we don't need to declare it as a modification.
Any suggestions would be much appreciated.
I am in the process of UK registering a Ferrari 458 Speciale. However it has failed the IVA test as the decibels have reached 115 at stationary.
I have had the vehicle inspected by 2 separate Ferrari specialists and can confirm it is a standard factory fit exhaust and has not been modified in any way.
I thought of putting an exhaust silencer/muffler on it just to get it through the test but I have been advised this will only bring the decibels down by 3 or 4.
The maximum decibels cannot exceed 99 so I need a solution to bring it at least 16 decibels down to pass the test. I have been informed that this can be a temporary measure in order to pass the test as long as we don't modify the carbs then we don't need to declare it as a modification.
Any suggestions would be much appreciated.
The easiest way to do this, and it's also something you will want to leave in place, is install the Forza Componenti Exhaust Valve Controller.
See here:
http://forzacomponenti.com/
This product allows you to control the Exhaust's Valves, which handily has three stages.
1) ECU control (exhaust valves operate as normal)
2) Always open (when you want the full noise)
3) Always closed (when you need to be quiet)
The issue you are having is that when the test is being done the Valves are opening and giving you full noise.
In this case the obvious setting when going for the IVA Test is 3 (always closed). This means the Exhaust will be at its quietist and go through the test.
It also handy for Track Days where you more often than not need to keep the noise down too.
The product works by Remote Control, or you can do a more permanent job and hardwire a switch in the cabin.
The latter is the best option as you can leave the switch in "always closed" so it doesn't bark on start up, and leave it there for the test.
See here:
http://forzacomponenti.com/
This product allows you to control the Exhaust's Valves, which handily has three stages.
1) ECU control (exhaust valves operate as normal)
2) Always open (when you want the full noise)
3) Always closed (when you need to be quiet)
The issue you are having is that when the test is being done the Valves are opening and giving you full noise.
In this case the obvious setting when going for the IVA Test is 3 (always closed). This means the Exhaust will be at its quietist and go through the test.
It also handy for Track Days where you more often than not need to keep the noise down too.
The product works by Remote Control, or you can do a more permanent job and hardwire a switch in the cabin.
The latter is the best option as you can leave the switch in "always closed" so it doesn't bark on start up, and leave it there for the test.
Overhaul said:
The latter is the best option as you can leave the switch in "always closed" so it doesn't bark on start up, and leave it there for the test.
The actual valves are controlled by vacuum stored in a tank so you'll never be able to start the car with the valves closed unless the tank has been charged (ie: the car driven shortly beforehand).voicey said:
The actual valves are controlled by vacuum stored in a tank so you'll never be able to start the car with the valves closed unless the tank has been charged (ie: the car driven shortly beforehand).
I am aware of that fact, but I suppose it depends on how long its been sitting.I've left mine sitting for a couple of months, started it in quiet mode..........and it did just that !
And thinking about it, if the car is being driven to the test centre it the tank should be freshly charged anyway.
Besides I'm sure a bark on start up isn't really the issue, it's DB at a certain rev range which is no doubt where the Valves are popping open.
Jean-C said:
Can anyone help?
I am in the process of UK registering a Ferrari 458 Speciale. However it has failed the IVA test as the decibels have reached 115 at stationary.
I have had the vehicle inspected by 2 separate Ferrari specialists and can confirm it is a standard factory fit exhaust and has not been modified in any way.
I thought of putting an exhaust silencer/muffler on it just to get it through the test but I have been advised this will only bring the decibels down by 3 or 4.
The maximum decibels cannot exceed 99 so I need a solution to bring it at least 16 decibels down to pass the test. I have been informed that this can be a temporary measure in order to pass the test as long as we don't modify the carbs then we don't need to declare it as a modification.
Any suggestions would be much appreciated.
Why are you having to put it through IVA given the 458 Speciale is a UK type approved car? I am in the process of UK registering a Ferrari 458 Speciale. However it has failed the IVA test as the decibels have reached 115 at stationary.
I have had the vehicle inspected by 2 separate Ferrari specialists and can confirm it is a standard factory fit exhaust and has not been modified in any way.
I thought of putting an exhaust silencer/muffler on it just to get it through the test but I have been advised this will only bring the decibels down by 3 or 4.
The maximum decibels cannot exceed 99 so I need a solution to bring it at least 16 decibels down to pass the test. I have been informed that this can be a temporary measure in order to pass the test as long as we don't modify the carbs then we don't need to declare it as a modification.
Any suggestions would be much appreciated.
Jean-C said:
It was first sold in Russia, then went to Germany, passed the TUV then was shipped to Dubai, then came to the UK.
Unsure why it’s sitting so high on decibels with no explanation. Re test has been booked at a different centre so hopefully the tester is more lenient this time ??
115db sounds right @6000rpm, mine flunked the MSV snetterton meter at 116dbUnsure why it’s sitting so high on decibels with no explanation. Re test has been booked at a different centre so hopefully the tester is more lenient this time ??
Has anyone tested the db output with valves closed @6000rpm?
Jean-C said:
It was first sold in Russia, then went to Germany, passed the TUV then was shipped to Dubai, then came to the UK.
Unsure why it’s sitting so high on decibels with no explanation. Re test has been booked at a different centre so hopefully the tester is more lenient this time ??
Car that passed TÜV but flunks MOT must be a first Unsure why it’s sitting so high on decibels with no explanation. Re test has been booked at a different centre so hopefully the tester is more lenient this time ??
Quick Question. Where is the car currently registered?
If you have any of the registration docs from Germany and it was last registered there, then there should be no issue with registered in the UK with just a COC, avoiding all the IVA nonsense.
Had experience with a Gallardo in the same situation a few years ago.
If you have any of the registration docs from Germany and it was last registered there, then there should be no issue with registered in the UK with just a COC, avoiding all the IVA nonsense.
Had experience with a Gallardo in the same situation a few years ago.
Voicey helped IVA my F430 - it was a german car (so euro spec). I decided to IVA rather than CoC it as now I pay £260 a year VED 
anyway, found out during the IVA that the car itself has a load of E mark and European legislation numbers printed under the bonnet, (458 may be different) which match up to various parts of the test.
I was expecting to do the whole test of noise, speedo etc, but when the tester saw the list printed on the bonnet we where able to skip almost all the tests (seat belts, noise, lighting, airbags, speedo accuracy etc) he spent more time looking at the tyre markings than most other things on the car after that.
anyway, found out during the IVA that the car itself has a load of E mark and European legislation numbers printed under the bonnet, (458 may be different) which match up to various parts of the test.
I was expecting to do the whole test of noise, speedo etc, but when the tester saw the list printed on the bonnet we where able to skip almost all the tests (seat belts, noise, lighting, airbags, speedo accuracy etc) he spent more time looking at the tyre markings than most other things on the car after that.
Edited by paulmnz on Saturday 27th April 12:00
Hi all,
Thank you for your help and suggestions. The vehicle was first marketed in Russia so there was no COC available. The car did have to have the speedometer and the lights changed then passed a standard MOT test. As there was no COC available we had to go down the route of the IVA.
After the fail we booked a retest at a different test centre and this was carried out yesterday. I am pleased to say it passed! With the TUV report and 2 Ferrari specialists reports stating no modifications were present and it was a factory fit exhaust.
The tester didn’t test the car it was a straight pass.
One step closer to UK registration yippee
Thank you for your help and suggestions. The vehicle was first marketed in Russia so there was no COC available. The car did have to have the speedometer and the lights changed then passed a standard MOT test. As there was no COC available we had to go down the route of the IVA.
After the fail we booked a retest at a different test centre and this was carried out yesterday. I am pleased to say it passed! With the TUV report and 2 Ferrari specialists reports stating no modifications were present and it was a factory fit exhaust.
The tester didn’t test the car it was a straight pass.
One step closer to UK registration yippee
Edited by Jean-C on Saturday 27th April 17:31
I mean. I don't want to be unhelpful here.. but why on earth get a Speciale first registered in Russia when there's a good supply from all over Europe to chose from ?
I got mine UK registered but had been imported from Hungary and it basically required all of 2 documents and a visual inspection by any garage to check speedo and lights..
Same for the GT3 I got from Austria, really straight forward... but ex-EU...
Only suggestion I have for you would be to visit somebody used to import cars and knowledgeable in the Brand.. Joe Macari for example
I got mine UK registered but had been imported from Hungary and it basically required all of 2 documents and a visual inspection by any garage to check speedo and lights..
Same for the GT3 I got from Austria, really straight forward... but ex-EU...
Only suggestion I have for you would be to visit somebody used to import cars and knowledgeable in the Brand.. Joe Macari for example
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