i had hesitations/stumbles on accelaration on most occasions till my crankshaft position sensor gave up the ghost>P0335 dtc.
I did a r/r routine on the sensor (cheap & easy), been running fine, no more code no more symptoms. 89000 miles ago.
correct me if i am wrong, shraph's mufflers is a tad too short and daniel's a tad too long.
i think you ought to trade mufflers, then i can purchase itsdaniel's for my sedan.
how many miles on the odometer.
you went stage one barely,that put a strain on the turbo reason why i ask for mileage.
ask dad if he could pull down the downpipe to look at the back of the turbo to inspect
do not drive while looking for the noise
then again it could be something else
welcome