Exhaust question related to diameter w/various upgrades
Hi guys, I had an Outlaw Flowmaster catback which has 3" tubing.
Enjoyed it for a while but the drone was starting to fry my brain and God knows I've lost my fair share of brain cells in my day already ... Anyway ... Previous catback was a Borla S-type, 2.75" tubing. Had a reputable muffler shop weld the stinger mufflers to the flowmaster pipes. Working great and sounds awesome.
On order I have BBK ceramic 1 3/4 LTH w/ O/R xpipe and a BOSS 302 intake manifold that I plan to install next weekend. (Sweet!)
Can you think of any issues I might encounter with the new headers going into an O/R xpipe, 3" UNTIL I get to the mufflers which is 2.75". Since I'm still NA, I'm thinking no worries but thought I'd get a few 2nd opinions.
Side question, I know a bone stock 'stang with an 85mm throttle body see's little gains but what about an upgraded exhaust and intake such as mine? Also running with a Steeda CAI.