I've read a lot of threads on here, the manual and did some online searching, but I'm a bit unsure on the correct plugs to get.
Was looking at these as I'm happy to spend a bit more if the performance is better.
http://www.torqen.uk...0003-m40hl.html
Has anyone had any experience with these plugs?
They has a higher heat range, which translates to being a colder plug and this is better if using wide open throttle for sustained periods of time (whereas a hotter plug with a lower heat range is meant to be better for shorter stop/start driving).
Mine is N/A with a few exhaust upgrades, I do a mix of shorter commuting (approx 20mins) and am planning on three or four track days a year. I'm thinking I'd be better to stick with the standard heat range plugs as my driving is a mix of the two extremes of driving (short commute & wide open throttle track days), however if the linked spark plugs offer better performance and the cons are minimal, I think I'd go with them!
From what I gather, the oem ones are the denso iridiums and ngk also do iridiums but some people seem to think the denso is a safer bet (from threads on here - all other opinions and experience welcomed!)
I've not done much research on coolant yet. Anyone have any suggestions on coolant type & where to get?