[john walker's workshop]

the original factory exchangers, which are stainless, although a different grade i'm sure, did not get red. that's what bugs me. CO is 4% at idle. AFR unknown at this time. no dyno close by. i just spoke to alfred, who sells them, and he said that after a few heat cycles, they won't get red anymore. we'll see i guess. hate to waste all the installation effort and put the stockers back on.