Opinion Needed: replacing spark plugs with cold spark plugs.
As you currently stand, colder plugs alone won't net you much. If you plan to do more mods and up the boost in the future, then colder plugs would be beneficial.
Joined: Feb 2008
Posts: 6,460
The heat range from the factory was carefully selected to match the engine. The stock plugs are proven to go 100k miles + without replacement (assuming no other maintenance issues that ruin them). Putting in colder plugs (especially multiple heat ranges colder) is just going to foul plugs out from not getting them up to temperature. If the engineers could've got more power and still kept decent longevity with colder plugs, they would've done that stock.
I do typically reccomend replacing wires if you're doing plugs, especially at higher mileage. The stock wires will likely be brittle, and what better time to change them than when you've got the plugs out for maintenance? A good replacement for an engine like yours is stock or stock equivalent aftermarket wires. There are aftermarket 'race wires' but the only benefit I see to them is that they seem to hold up better against multiple plug changes (ie for the people who switch to copper tip plugs).
Thread Starter
Joined: May 2016
Posts: 19
From: Denver, Co
That is a bad *** engine you have! Thanks for your input.
Thread Starter
Joined: May 2016
Posts: 19
From: Denver, Co
I do reccomend it on a moderately modded engine, but your engine is making stock (or less than stock, depending on how that short ram intake is setup) power so there is no reason to change the heat range of the plugs.
The heat range from the factory was carefully selected to match the engine. The stock plugs are proven to go 100k miles + without replacement (assuming no other maintenance issues that ruin them). Putting in colder plugs (especially multiple heat ranges colder) is just going to foul plugs out from not getting them up to temperature. If the engineers could've got more power and still kept decent longevity with colder plugs, they would've done that stock.
I do typically reccomend replacing wires if you're doing plugs, especially at higher mileage. The stock wires will likely be brittle, and what better time to change them than when you've got the plugs out for maintenance? A good replacement for an engine like yours is stock or stock equivalent aftermarket wires. There are aftermarket 'race wires' but the only benefit I see to them is that they seem to hold up better against multiple plug changes (ie for the people who switch to copper tip plugs).
The heat range from the factory was carefully selected to match the engine. The stock plugs are proven to go 100k miles + without replacement (assuming no other maintenance issues that ruin them). Putting in colder plugs (especially multiple heat ranges colder) is just going to foul plugs out from not getting them up to temperature. If the engineers could've got more power and still kept decent longevity with colder plugs, they would've done that stock.
I do typically reccomend replacing wires if you're doing plugs, especially at higher mileage. The stock wires will likely be brittle, and what better time to change them than when you've got the plugs out for maintenance? A good replacement for an engine like yours is stock or stock equivalent aftermarket wires. There are aftermarket 'race wires' but the only benefit I see to them is that they seem to hold up better against multiple plug changes (ie for the people who switch to copper tip plugs).