Hi

At what point bhp-wise does a 2.5" exhaust become constrictive? Am considering going to a 3" as i know of one for sale locally to me but is there any point?
Currently running about 340-350bhp on a uk-my99.

Thanks

PeteS

 

About 350bhp, i'd say go for it as it can't do any harm and if you decide to go further with your mods then it's there already

 

I hope to be getting around 400 with a 2.5 so will see how it goes when mapping, should be ok to that level "just"