Hi all.

I have a Exhaust question for you. Would it make ank diffrence puting a 4" turbo to Y and then 3" to Tail?

I have a 3"turbo to Y then 2.5" to tail fitted. The car will be running a T4 Turbo and aprox 400rwhp

So would i see any more gain?

 

Make it 3'' all the way to the back that would work better,you will only loose alittle bit of low end power but you will feel the diff at higher revs .