I've also got a 2004 PT Cruiser Turbo. Same engine as the Neon SRT4 and I've added the Stage 1 upgrade, cat back dual exhaust, and a few other bits. Even in the blistering heat and gale force headwinds usually encountered at the California Speedway dragstrip it's run 14.4 @ 94 mph in the 1/4 mile. I haven't had a single issue with it either.