The most restrictive part in the exhaust is the catalyc converter. Apart from that, the exhaust diameter is very small. I'd get a full turboback 3 or 3.5 inch lightweight exhaust. SS DP and titanium catback would be cool, but mega bucks...
Start with gauges to see what's going on and go from there (boost, EGT, AFR, oil pressure and maybe oil temp if you drive it very hard).
Start with gauges to see what's going on and go from there (boost, EGT, AFR, oil pressure and maybe oil temp if you drive it very hard).