Thread: The Best Spark Plug Out There

Vadim the fact that your engine is a sludgemonster might have something to do with your piss poor mileage. Who knows how much more frictional losses there are with yours.

well my gfs b14 had some cheapo spark plugs in he engine, and i replaced them with bkr6e's and the car ran 100% better, but my point is the ngk is socheap and run alt better fr ou engines, they are really ard to beat, esp if you are going turbo 7e's are great

So my understanding is that the bosche+2 plugs are better wen it comes to mpg with n/a?

That could be a big one or might not have any affect at all. The fact that my car got 33 MPG highway with just an intake last year, told me that the engine is in fine enough working order, because thats EPA numbers.

Now my City mileage has always been in the 18-20MPG area. So I'm thinking a vacuum leak could be in the Emissions system. This would explain why highway mileage would not be affected because you use up all the gas and it doesn't have a chance to just evaporate like it would when the car is just sitting.

Reason I say that is, when my car is down for couple days and nights, the arrow kinda goes down a little by it self...



That is true, I would just spend the buck and get NGK's.



Thats not 100% true, most people experience terrible results with Bosche Platinum +2 plugs. Almost every single technical SR person has told me to never use Bosch Platinum plugs in our engines.

But in my personal experience with my engine, Bosch Platinum +2 plugs have gotten me the most power and the best MPG.

Yesterday I beat on the car a lot, I'm talking about hitting the redline 6+ times, and sometimes keeping at redling for couple seconds so that I could get a BHP ratting from the ScanGauge.

Alright so the numbers hehe.

I got 198 BHP at 98* incoming intake Air Temperature. That means that the air that was going into the engine was 98*. Rule of thumb is, the hotter the air the worse performance...

As for gas mileage. I drove for 51 miles, city only (stop and go/lots of idling). Beat on the car. And only fueled up 2.3 Gallons of gas.

That gives me a spanking 22MPG. Which is way impressive for City only and how much I floored the car.

So something about my engine and not liking NGK plugs

Hahaha well maybe I should try some of those bosches....

Now a rule of thumb is not to get anything more then the +2, if you seen my notes about Indexing the spark plugs, having more then 2 electrodes will only block the flame.

Try them out and post back here your results

NGK FTW!

Ok so what about that "Sonic thing," you were talking about? How did that do if you tested it on the ngk copper 5 or 6?

Alright I talked to one of the more technical forum members in person about this today. The reason Bosch Platinum spark plugs are bad is because they burn out within about 25k miles.

As for the Sonic thing, I will be trying them on again when the variables stabilize. As in, I first need to get enough data from the current setup before I try them on again

Ok sounds good, Keep us posted