Quote:
Originally Posted by GaryS
Wow, that's very impressive!
How much difference did those Halo plugs make? I looked at their site, but I tend to take manufactures' claims with a grain of salt.
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Prior to the Halo's or the ca40, 27-28 hiway. With ca40, 32'ish. Still great improvement. These claims about Halo's will vary like the claims with ca40. Halo's have been around for many years. I used them in my '78 280Z but went the performance angle in those days. They were made in Europe then and now. I wanted to try the plugs again 1st in a 4 banger before buying 16 for the Hemi. Being that most improvement is proportional, and I've been using the ca40 for over a year in the Hemi with about a 1-2mpg increase, another 1-2mpg with the Halo's and 20% less harmful emissions is fine by me.
I had a pro install mine. Dino's here in the NW. The Green Plug guys will answer any questions or concerns. And, I have no idea if they have endorsed any out of area mechanics. None are listed. Good Luck!
