For the guys that cut their header flanges so all 4 tubes aren't on one big flange do you have any issues with a welded on collector or is it better to use a slip on collector? Wasn't sure if over time and heat cycles the tubes would tweak and if welded to the collector make it hard to install and seal.
I always cut the flanges. To that end, I cut the damn collectors off too and use slip on collectors. No header should be made that doesn’t have slip on collectors. It makes everything easier and tune-able.
So you can cut the flanges and it won’t hurt anything.
