Cutting off in rain
 

Ok ,so my car has had it's tune for about 2 years and has run ok mostly since then. A little hard to start sometimes, mostly good. I drove it to work the other night and it started to rain . When I leave work , I can hardly get it to idle. Every stop it stalls out and I use a lot more e85 because I am revving at lights. on the interstate at speed it runs fine. I do have vents in the hood, and it had rained all day. Any thoughts?

Rain often shows up weaknesses in old ignition system parts.

You might be losing spark somewhere. Could be worth checking your coils.

Yeah, I get it . What was weird was I drove it to see the guy that tuned it for me, after that . It drove absolutely perfect ! Kind of frustrating. I have been running with the original coils, I was told they were plenty of spark for my power level. Well ,I do have LS coils I was going to use back then, guess it is time to use them. I have not seen many builds going that route lately. Usually coil on plug.

That was in the dry when It was good