Im more interested in strip performance. The street driving is just for tuning for the track, although the quick spool is fun. I don’t street race or anything. Do you think there are gains to be made by increasing the downpipe from 3 to 4”? I’m thinking the next logical step is an upgrade to the 7875 with the 1.25AR and then a 3.5-4” downpipe. There’s also a good chance that this EBay 7875 just doesn’t perform as well as the VS Racing equivalent and maybe switching to the VS model without any other changes yields better performance.
