<GB> wrote:hey owen! did they crack from too many track days? or poor quality stainless or welds?
I think it's a mixture of E85, heat and age. The headers were OEM TS equal length ones (so just mild steel) and my custom up pipe was done with steam pipe, I think the track days definitely contributed to the cracks though.
Now I'm using the best headers on the market (you should see how thick the flanges are) and reinforced the welds on the custom up pipe -> external wastegate -> T28 flange