Extremely loud at 70mph?

[Justin14100]

Anyone else have this problem? at 70 (3000rpm ish) the car is really really loud, think its the exhaust. it quietens off at 90-100 and is so much nicer to drive at those speeds.

is it just the awful back box i have? any recommendations for one?

or would a standard one be best? lack of power? i have read that apart from the manifolds the rest of the exhaust on VW's doesn't make much power difference if you get uprated ones.

Also, if I wanted to go back to the airbox from the Jabba induction kit, do i need the smaller collar on the charger inlet, or does the airbox pipe just fit without the collar? 

Thanks!

[hayesey]

it's obviously just the resonant frequency of the exhaust system.  A quieter system will make it better.

Standard is OK up to a point, if you are tuning the engine for power then it'll probably become a restriction much above 140bhp or so.

the pipe on the standard airbox just bolts right onto the charger inlet.

[Justin14100]

Hmm, will deffo have to look into it, dont want to loose power, but im not really a power chaser, its my daily and its quick enough really, might look into a standard air box too, you know if thats much of a restriction compared to the jabba induction kit?

[Yoof]

You can't get a quiet 2.5" bore system onto a G40, without a load of silencers. Bastuk have 3 (probably the msot you can fit under a Polo) and our twin silenced systems are still quieter.

Depending on your choice of mods, the exhaust is usually the loudest at peak torque/speed. Unfortunately with a G40s gearing this happens to be at motorway speeds.

Andy's car was very loud with a Tube Torque system on, now with a turbo and the same system, it's queit as a mouse