Hey DSMtuners,
i recently got my first gsx which is the second dsm i have now owned. The car currently has an Apex'i Dunk exhaust, which i've read up on and seems all good reviews, but its running a 3" exhaust to the cat. Now the car seems to be stock aside from the exhaust, fuel rails are stock and aside from minor suspension upgrades it seems like no other upgrades were done. Is 3" too big for the stock setup? I am planning to start building on it asap but im concerned that the exhaust is too big to be running to stock cats and a stock downpipe. Should i just start with the downpipe and some high flow cats to match to the exhaust to complete that setup or will it be fine with a fuel system upgrade along with turbo and intercooler swap?