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02 Z06 with 415 C.I.D, intake, cam, exhaust, tune. I had a hiccup after driving a while on the highway around 2100 RPM. The hiccup feels like the car shuts off for a split second. This was going on for about 2-3 weeks. I had to drive the car in the rain on my way to work, 20 minute drive. On the way home from work (it was dry and had stopped raining) and my car just shut off. It wouldn't start for 10-15 minutes and then I tried again and it started up. This happened 3 times on my 20 minute drive home. I was low on fuel but not at reserve fuel yet and now the car doesn't sound as loud as it was. I think i've notice a vaccuum cleaner noise coming from the back of the motor near the firewall, not sure if it was there before or not.
I've taken it for a couple short drives since and it died once as i pulled into my parking spot.