Luke_in_SD

I'm kinda iffy about using that product. Looks like a lot of work and kinda of risky.


Update changed plug wires, I noticed a little improvement in power.

Or atleast I think I did. (OEM wires, which are NOT DENSO)

Next step, add a of BG44K in the gas tank for next fill up, and putting on the stock wheels.

Luke_in_SD

16.3mpg now with the 19's still on!!! just filled it up today at chevron. I changed plug wires between half and a quarter tank and put in BG44K fuel system cleaner in during fill up. I am hoping next tank will be back to 17-18mpg, but I am glad its not 14mpg anymore.

WDoherty

The biggest single improvement for mpg in tuning up my car were new spark plugs. I checked the resistance on the stock wires and they were all in spec as well, so keep that in mind. I installed bosch platinums (single electrode) and averaged 26mpg to Austin (6hr drive) at 80mph with a/c on. Then got my all time highest average on a 65mph night drive to new mexico at 28mpg in 92 sc400. I live in small town and do some driving there and make a few trips a week to another town 26 miles away and almost always average 22 and half mpg per tank. I'm usually refilling when my trip meter for the tank is nearing 400miles. Also note, i have not yet seafoamed, but plan to.

Luke_in_SD

I would do that but my spark plugs are pretty new. NGK Plat 1's changed in sept. The mechanic said I might get some better MPG by switching to 5w-30 instead of 10w-30.

what do u guys think?

Luke_in_SD

anybody use 5w-30????

over40driv

I would use 5/30, espeacially in cold weather.