Discussion in 'Prodrive Impreza 555 Group A' started by shanemc, Jun 28, 2019.
Can someone tell me the tail pipe diameter/diameters on the early works group A imprezas? Thanks
3” diameter straight through tailpipe and the additional 98db muffler tailpipe is 5” diameter with a small 3” pipe either end. I have also read somewhere that the gravel spec cars had 2 1/2” exhausts.
Excellent, thanks for that