Shaleskin Posted July 15, 2015 Share Posted July 15, 2015 Morning all! Wondering how I tell what spark plugs to fit in to my supra running 17psi on stock turbos but with 650cc injectors? How do I tell whether I need hotter or colder plugs? I saw there is a guide on here regarding plugs but that seemed to be in regards to standard injectors. Thanks Quote Link to comment Share on other sites More sharing options...
fastcar Posted July 15, 2015 Share Posted July 15, 2015 Just use the same grade as BPU there won't be much difference. You will know if they need to be changed for a colder set as the car will misfire when you stick your foot down Quote Link to comment Share on other sites More sharing options...
Paul Whiffin Posted July 15, 2015 Share Posted July 15, 2015 NGK BKR7EIX iridium spark plugs are what you need at that boost level, we keep them in stock if needed. Cheers Paul Quote Link to comment Share on other sites More sharing options...
baldy Posted July 15, 2015 Share Posted July 15, 2015 why are you running 650cc injectors on stock turbos? Quote Link to comment Share on other sites More sharing options...
tony tt Posted July 15, 2015 Share Posted July 15, 2015 why are you running 650cc injectors on stock turbos? This. Quote Link to comment Share on other sites More sharing options...
Shaleskin Posted July 15, 2015 Author Share Posted July 15, 2015 Bloke back in 2004 fitted them with an emanage piggy back, Hks 264 camshafts, Hks cam pulleys, Hks forged pistons... want to go single to make the most of these but that can happen in the future some when. Quote Link to comment Share on other sites More sharing options...
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