IT'S VERY LONG I KNOW BUT PLEASE READ COULD BE VERY HELPFUL
Eventually gave up with the fault finding for the slight lack of response and power from the trophy myself so I handed it over to a Renault sport specialist who plugged it into the laptop. The first piece of software did not show up with any results which I was not surprised about as no dash board SERV lights have ever been present, however the second tests he ran with another laptop brought back a fault.
The fault was the acoustic valve !!! He opened the bonnet to find I had removed the acoustic valve. I did this a couple of months back when trying to fault find myself and came across the post on this topic about the valve. When I removed the valve I noticed no change other than a louder noise so just left it out. I told the guy this and he said this is a very common problem, either the acoustic valve stops working (mine stopped working and explains the increased noise level when the problem occurred) or people remove them. He then went on the explain the importance of the valve which is not mentioned at all in the acoustic valve topic on here.
On here people have said the valve is only there to meet EU noise regulations and that's why i happily removed it. However this is only partly right ! The valve is in place to limit air flow to the engine, at some points the valve will be completely shut and air can only enter from the other small intake. The valve works in accordance to the ECU program within the vehicle. For example when accelerating the engines ECU program will injected the correct amount of fuel and control the amount of air intake by the acoustic valve for the perfect mix. However with this valve missing/not functioning properly the amount of air being drawn in by the engine is much greater than the ECU had determined and therefore an incorrect mix of fuel and air occurs. This in turn causes; slight lack in power, engine response and less torque.
He also said when accelerating hard from a low rev range the 182's acoustic valve shuts completely. This not only keeps the induction noises quieter but also increases the torque produced due to the result of restricted air flow.
The only way removing the acoustic valve can be beneficial is if you have a good remap that is designed for the larger amounts of air flow. So every 182 owner who has removed their acoustic valve and still has the standard map, if you want better performance put it back on! Also I think this should be brought up on the acoustic valve post as this was not explain and people do not know.
My problem has been solved eventually thank god and my T is back to normal
very happy
Thanks a lot guys
Rob
Eventually gave up with the fault finding for the slight lack of response and power from the trophy myself so I handed it over to a Renault sport specialist who plugged it into the laptop. The first piece of software did not show up with any results which I was not surprised about as no dash board SERV lights have ever been present, however the second tests he ran with another laptop brought back a fault.
The fault was the acoustic valve !!! He opened the bonnet to find I had removed the acoustic valve. I did this a couple of months back when trying to fault find myself and came across the post on this topic about the valve. When I removed the valve I noticed no change other than a louder noise so just left it out. I told the guy this and he said this is a very common problem, either the acoustic valve stops working (mine stopped working and explains the increased noise level when the problem occurred) or people remove them. He then went on the explain the importance of the valve which is not mentioned at all in the acoustic valve topic on here.
On here people have said the valve is only there to meet EU noise regulations and that's why i happily removed it. However this is only partly right ! The valve is in place to limit air flow to the engine, at some points the valve will be completely shut and air can only enter from the other small intake. The valve works in accordance to the ECU program within the vehicle. For example when accelerating the engines ECU program will injected the correct amount of fuel and control the amount of air intake by the acoustic valve for the perfect mix. However with this valve missing/not functioning properly the amount of air being drawn in by the engine is much greater than the ECU had determined and therefore an incorrect mix of fuel and air occurs. This in turn causes; slight lack in power, engine response and less torque.
He also said when accelerating hard from a low rev range the 182's acoustic valve shuts completely. This not only keeps the induction noises quieter but also increases the torque produced due to the result of restricted air flow.
The only way removing the acoustic valve can be beneficial is if you have a good remap that is designed for the larger amounts of air flow. So every 182 owner who has removed their acoustic valve and still has the standard map, if you want better performance put it back on! Also I think this should be brought up on the acoustic valve post as this was not explain and people do not know.
My problem has been solved eventually thank god and my T is back to normal
very happyThanks a lot guys
Rob
