I took my car out for a spin today and when i would rev it to around 3500-4000 a burning smell would show up and from time to time smoke would come out of the exhaust it was a very light bluish smoke but it didnt smell at all like oil burning and when i'd get it back to my house no more smoke I'd rev it up and nothing. Took it out again and same thing happens take it back to my house and again nothing. After that I brought up the rpm's to around 6000 and this redish smoke came out but it was only noticeable because the sun was shining through it. Any Idea's on what it could be? It did sit for quite some time and it does need a ignition control module and temperature sensor but It runs fine till i take it out for a drive.