For this year, 2008, the EFRA has made a change in the regulations regarding the exhaust systems.
(or sometimes called tuned pipes)
The change did not only affect the exhaust pipe itself, but also the manifolds to which are the exhaust pipe is attached to.
As for 2008 the conical manifolds are not allowed anymore.

These changes means that every racer that is racing under EFRA rules has to use these new exhaust systems.

Right after the EFRA manufactures meeting held in Brussels October last year we studied the new regulations carefully and we made a new range of tuned pipes and manifolds complying with EFRA rules.

New Tuned pipes complying with EFRA rules (1:8 Off-road).
New manifolds and Tuned pipes complying with EFRA rules (1:8 On-road).