Originally Posted By SimonH
Originally Posted By Volvos60s60


Please can SiFab advise if they have developed an exhaust


In short, no...

There are decent gains to be made from a proper exhaust manifold and system on the S1 Aero. But when I say proper, it will be north of £5-6K for an equal length ceramic coated manifold (else it will cook everything in the engine bay)and a proper mandrel bent, correct diameter full exhaust system

And then there's the fitting cost....

I did do a lot of work with simulation for some of the planned development work on the Aero GT after the 2006 Britcar 24hr race, but the owner decided to take the car elsewhere

For what its worth, we ran circa 380BHP from the 4.6 engine for the 24hr race through the standard manifolds, no cats (we didn't have to worry about emissions) and a 2 1/2 OD exhaust system. We had large(but straight through) silencers and side exit exhausts

Simon @ SiFab.co.uk


Hi Simon,

It would be great if someone did eventually produce some good manifolds for the Aero, give it some more bark..

With regards to the exhaust I have a question, I note there are 2 cats on each side before the silencer, how much do these restrict performance in your experience and would removal of one of those be the best route for performance/noise rather than removing the only exhaust box in the system (Librands)?

Thanks,
Nick

Aero 8 GTN #11

"What we do in life.. echoes in eternity."