Which plugs for FI and E85?

[JoshK]

I bought some used HTOs to get my car going when I first put the turbo on and am wanting to order a new set now. I thought that I read somewhere once that you didnt need to go one heat range colder if you are running E85. Is this true or not?

 

[stkjock]

How much boost?

 

[JoshK]

will be around 8psi, set at 6.5 now

 

[stkjock]

Stock heat range should be fine.

Ethanol runs cooler and does like a bit hotter plug.

 

[JoshK]

Thanks, it seems like I have had to let the car really warm up for it run decent and am thinking part of it is the plugs(almost positive most of it is the cold start tune). At what boost level should I think about the cooler plugs? Should I still run a .032 gap?

 

[stkjock]

Best to talk to your tuner. As a reference point. I'm at 20 and a single step colder.
At 8 psi .032-.034 should be ok.

 

[JoshK]

Thanks for your input!!