Alfa Romeo Forum - View Single Post - Prototype Scorpion 147 GTA exhaust

newalfisti · 28-04-2008

Mark,
i would suggest that you develop an exhaust that is very similar in appearance to the standard exhaust(twin exit slash and rolled inwards).
In terms of developing an exhaust your starting point should be measuring back pressure at full load and during transient acceleration on your standard exhaust. Then try to improve on that.
Decat pipes would then be very good. Try to retain equal diameter all the way through and eliminate and smooth out as many bends as possible. In terms of noise i would suggest that IF sropion have the experties to noise tune the exhaust then it would be good to try and make the exhaust sound more italian and more like the unicorse exhaust without being intrusive and abuse the original driving experience.
I will not ask for exhaust manifolds as i dont believe small exhasut companies can produce decent manifolds.

28-04-2008	#21 (Post Link)
newalfisti AO Member Join Date: Jan 2007 Posts: 302 Member car: alfa156 GTA sw	Re: Prototype Scorpion 147 GTA exhaust - what would you like? Mark, i would suggest that you develop an exhaust that is very similar in appearance to the standard exhaust(twin exit slash and rolled inwards). In terms of developing an exhaust your starting point should be measuring back pressure at full load and during transient acceleration on your standard exhaust. Then try to improve on that. Decat pipes would then be very good. Try to retain equal diameter all the way through and eliminate and smooth out as many bends as possible. In terms of noise i would suggest that IF sropion have the experties to noise tune the exhaust then it would be good to try and make the exhaust sound more italian and more like the unicorse exhaust without being intrusive and abuse the original driving experience. I will not ask for exhaust manifolds as i dont believe small exhasut companies can produce decent manifolds.