It's not every 3 to 5k, it's 10 to 15k I just swapped my ngk's at 15k miles but probably could have got another 5 to 10k on them. I switched to the new ngk's that last longer and plan on swapping them when they hit 25k miles. It's really just cheap insurance. Like you I also use amsoil. Again...
What caused it to blow? What mods did you have at the time?, Boost pressure? Power levels? Very curious as I have an 18 and wondering how much my car is in borrowed time.
Except the gt500 will track better, be more reliable and have a significantly better resale value. But technically yes if you drop 15k into your car you could beat it In a straight line.
Also my vote would be m3/4. Just cause it's different
My car with my current mods without anyone in it and no stuff. 3700 lbs even. That's with a full tank
Ya this car is significantly more hefty than I thought it was. I was hoping for 3500. To put it in perspective my buddy with a similar setup but a gt was only 60 lbs more than me if I...