250-500cc Quick FMF Gnarly and jetting question for '11 wr300

I installed a new gnarly pipe this week; mated to the stock silencer. Prior to the gnarly I've been running the stock pipe since new. Also running a husky high comp head, rekluse ZSP, and a PWK ASII (PS=42, JD red needle 3 clip, 175 main, AS 2 turns out) that's jetted spot on for temps about 75F and below, but slightly rich on the pilot as temps reach into the 80s and 90s (sea level to 1,000 ft). How will this pipe affect my current jetting? Any changes recommended? I ride mostly tight single track in Western Washington, but doing a HS this weekend where I'll get to open it up quite a bit, which will be my first ride w/the gnarly. Thanks!

Im going to be really helpful and say i installed gnarly on my wr360 the bike is a little rich but will probably turn the needle half a turn leaner, get a lectron... Seee ya

I went leaner to a 172 and a del needle after switching to an aftermarket pipe

I have had to go leaner on the pilot with FMF pipes...