Really, I do or did. Ask anyone who was unfortunate enough to be down wind or behind me. It stinks. Now, I'm not proud of it but, I thought sharing my testimony would help those of you with a similar affliction. For years, I used Costco premium in my NSX and my S2K and they seem to have run well on it. However, recently both cars started throwing misfire codes. On my NSX, I started smelling gas, running rough and blowing coal on acceleration. People started complaining about my stench. My NSX is turbo'd, so my first thought was that the tune was way too rich. (Better rich than lean. But, this was ridiculous.) My local NSX Guru (Scott Oliver of HNA Automotive) pulled the plugs and all six were fouled. He replaced them with new plugs. The coil packs were good and the fuel filter was clean. So, before paying $700 for a tune and dyno, I decided to try some different gas. Scott recommended Exxon/Mobil, Shell or Chevron. I filled up with Exxon. Within about 100 miles of driving the car started idling a bit smoother, the codes stopped throwing and it was as if angels were flying out of my car's tail pipes.
As I said, I ran Costco for years with no issues and was certain their supplier was tier one. Either something changed or the bad gas just caught up with me. The fault was my own. I went cheap. Don't be like me. Use a tier one brand name "go juice" in your car and avoid the shame of a smelly rear end and performance issues. Have a little self respect....it's an NSX not a Prius.
Seriously, I've found that every time I try to save an extra buck on this fine car, I get disappointed. And it ends up costing me more in the long run. Sometimes it's the simplest of things that can cause significant problems. Like many of you, it's my dream car. So only the best is good enough. I use OEM Honda/Acura parts and fluids when possible and now good gas and oil in my baby. I hope that this sheds some light for those of you with similar problems.
As I said, I ran Costco for years with no issues and was certain their supplier was tier one. Either something changed or the bad gas just caught up with me. The fault was my own. I went cheap. Don't be like me. Use a tier one brand name "go juice" in your car and avoid the shame of a smelly rear end and performance issues. Have a little self respect....it's an NSX not a Prius.
Seriously, I've found that every time I try to save an extra buck on this fine car, I get disappointed. And it ends up costing me more in the long run. Sometimes it's the simplest of things that can cause significant problems. Like many of you, it's my dream car. So only the best is good enough. I use OEM Honda/Acura parts and fluids when possible and now good gas and oil in my baby. I hope that this sheds some light for those of you with similar problems.