Jellybean Posted September 23, 2008 Share Posted September 23, 2008 Car is 1993 TT BPU In the faq http://www.mkivsupra.net/vbb/showthread.php?t=41927&highlight=spark+plug Stock TT Denso Iridium - IK20 - leave gap alone TT @ upto 1bar Denso Iridium - IK22 - leave gap alone The Stock TT IK20 conicides with Denso Website for Europe http://www.globaldenso.com/cgi-bin/global/plug/euro/4w/4w-plug.cgi?name=SUPRA&filename=4w-89.txt&action=search But if I choose Japan as my region and filter on Supra the Denso website recommends IK16 ?? http://www.globaldenso.com/cgi-bin/global/plug/jpn/4w/4w-plug.cgi?name=SUPRA&filename=maker63car.csv&action=search Since my car is a JSpec what do I use IK22 or IK16?? Quote Link to comment Share on other sites More sharing options...
Ian R Posted September 23, 2008 Share Posted September 23, 2008 IK 22 if you are only running boost up to 1.0 bar or if above IK24 is what I used Quote Link to comment Share on other sites More sharing options...
Jellybean Posted September 23, 2008 Author Share Posted September 23, 2008 is it ok to run IK22 if I use .8 bar 90% of time and 1 bar the other 10% Quote Link to comment Share on other sites More sharing options...
merckx Posted September 23, 2008 Share Posted September 23, 2008 (edited) is it ok to run IK22 if I use .8 bar 90% of time and 1 bar the other 10% Yes. You just need to consider the max boost you'll be running and not how often you'll be driving at lower boost levels. Edited September 23, 2008 by merckx (see edit history) Quote Link to comment Share on other sites More sharing options...
Alex Posted September 23, 2008 Share Posted September 23, 2008 Yep IK22's are what i'd suggest, if you must have Denso's. Personally I would have NGK BKR7EIX Iridiums if I was you. Quote Link to comment Share on other sites More sharing options...
Jellybean Posted September 23, 2008 Author Share Posted September 23, 2008 Yep IK22's are what i'd suggest, if you must have Denso's. Personally I would have NGK BKR7EIX Iridiums if I was you. Why would u go with NGK BKR7EIX over Denso, just Denso are OEM choice for toyota so surely they are excellent quality Quote Link to comment Share on other sites More sharing options...
Alex Posted September 23, 2008 Share Posted September 23, 2008 Thicker electrode and no instances of the ceramic insulator breaking thus far. The Denso cases are few and far between (and mainly HKS variants afaik) but there are still cases. This break up can cause turbo/piston/valve damage.... It's a VERY small risk.... Quote Link to comment Share on other sites More sharing options...
Jellybean Posted September 23, 2008 Author Share Posted September 23, 2008 Thicker electrode and no instances of the ceramic insulator breaking thus far. The Denso cases are few and far between (and mainly HKS variants afaik) but there are still cases. This break up can cause turbo/piston/valve damage.... It's a VERY small risk.... Thanks that makes sense read about it in your FAQ Quote Link to comment Share on other sites More sharing options...
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