I am about rdy to change my plugs now. I want to know what plugs everyone uses with 4-6LB boost over stock and is a daily driver.

Thanks.

 

I'm using the Denso IT-20 plugs at .040 gap for 4#s plus. With 6#s you should probably close them up to .036 gap. Same plug should be fine. TR6s are the other plug most commonly used. The gaps should be the same.

 

denso It 22's.....24000miles

 

i'm running the TR6's with .040 gap and a 5lb pulley, no probs so far but I havent had them on long. After reading other posts about plugs it look like some people have blown the TR6's with pulleys bigger than 3lb and others have had no problems what so ever. I've notice alot of people recommending the NGK br7 which I think I am going to switch to as soon as I feel up to the hell that is changing the spark plugs.

 

IT-22's .40 gap with 4# lower 2# upper

 

https://www.f150online.com/forums/sh...highlight=br7* daily driver&pagenumber=1

 

TR6's gapped at .040 - I'd recommend around .042 to .044 though because my gas mileage sucks. Since I don't get into boost that much during daily driving, I think anything colder would just foul out.

 

That's what I've been using these with no problems.

 

I run TR6's with a 6# lower and a 2# upper gapped at .040

 

BR7EF's gapped at .36 ... With a 4 # lower ...

 

I'll be different

I'm running TR5s gapped at .040 with a 6lb lower with no problems.

It's all in the tune

 

yeah, John, but it's freaking WARM where you are!!! LOL

 

See sig-------19,000 miles on them and most of that is to and from work. Got me to 12.532 and 15 mpg driven daily.

Dan

 

can you ran denso it20 with stock pulleys and no chip ?
if so what gap should they be?

 

Well I think after reading as many splug questions as I could have i'll end up going with the BR-7ef's at I think .40 Its mostly a daily truck but I tend to get on it a bit. with just the 5lb pulley I think this will work alright. If anything thinks I should use a different please let me know before I buy and install.