[eksigned]

Can someone tell me why it is that we're recommended to re-gap plugs to 0.022 on the Alex's MP flash? I went ahead and replaced the plugs with OE plugs. 21k plugs on the originals and they still looked fine. I've noticed a cleaner pull but I'm feeling sort of less violent WOT hit. I've also noticed the car heat soaking "easier" than with the previous OE gap. Any insight? Thanks folks!

Eric

[G.Newt]

As you turn up the boost and run richer fuel mixtures, you want a more intense spark, which is achieved by closing the gap slightly. It's probably a safe "recommendation" but you're probably fine on stock plugs. May just need to replace them sooner. Ours are already 1-step colder than N55/N54.

[eksigned]

Originally Posted by G.Newt

As you turn up the boost and run richer fuel mixtures, you want a more intense spark, which is achieved by closing the gap slightly. It's probably a safe "recommendation" but you're probably fine on spark plugs. May just need to replace them sooner. Ours are already 1-step colder than N55/N54.

I never knew! Good to know! Thank you

[B58togo]

Yeah, OEM plugs should be fine, but they do tend to need replacing sooner with a tune. I started to get stumbling around 27k (JB4 installed at 1200 miles). I went with OEM plugs at stock gap (.027 IIRC) and it cleaned the stumbling right up. And G-Newt is correct; our stock plugs are already one step colder than N54/55. A lot of people seem to think the NGK 97506 is two steps colder than our stock plugs, but in reality it's only one step colder.