I am extremely pleased with how these plugs work

I had a choice between good performance on short drives, or good performance on longer drives, and always bad performance in cold weather. After I installed a set of Pulstar plugs, I put the stock idle feed restrictors back in and leaned out the idle. Now, throttle response from a cold start is flawless and throttle response remains so even when the engine is fully warmed up. As soon as the snow melted, I went for a 90-minute drive in 30-degree weather covering all conditions from country roads to freeways to city streets without a single stumble. I went for another long drive on a recent 65-degree day with perfect performance again. On both drives I found I was more likely to hit the rev limiter in first and second gears so power may be up as well. To summarize, I thought the only way to solve the drivability problems was to replace the carburetor with a fuel injection system, but just installing the Pulstar plugs was enough. I am extremely pleased with how these plugs work.