cidsamuth

I read that going colder by one spot or two on the spark plugs is a good thing with forced induction. I also see that some allege there is no benefit to colder plugs for non-forced induction . . . not to mention you lose a few HP.

However, if you are running normal bolt-ons and an aggressive tune (e.g. the Tillman 93 All Out tune), are you not pushing the envelope with denotation, and wouldn't a colder plug be a good move for long term performance and reliability?

Goldenpony

With basic bolt ons and a tune, I doubt there is any benefit in going to a colder plug. In fact, colder plugs are more likely to foul.

PSUSkier

An aggressive tune is in order to squeeze every last little pony out of your engine, no? So if that is the case why not just back down to a less aggressive tune where you won't see detonation.

cidsamuth

Good point. I'm not experiencing any detonation (that I notice), the matter just makes me curious.

I don't know enough about this to conclude whether an aggressive tune with a colder plug is better than a less aggressive tune with a hotter plug. Is fouling really an issue with going just one step colder?

red96v6

I had Brisk 1 heat range colder plugs in mine for about a week before I put the blower on. It seemed to run and respond a little differently. I dont know if I was being OCD about my baby, but I didnt like the way it felt.
I wouldnt run those without the blower. Not based off any technical data or anything, just my feeling.

Rob72

The stock heat range is the way to go unless you like changing fouled plugs often. You only go colder than stock if you're running a high cylinder temp as in the case with forced induction or a radical cam producing a lot more horsepower than stock.