I know this is an old topic, but I couldn't really find anything under the "search" section. So, what's the best spark plugs and gapping for a turbocharged 420A?

From previous discussions, I believe it's the NGK BKR5E-11, right? And, gap it to .04-.050?

Please, what is the current "agreed" and "accepted" best plugs and gappping?

Later,
Fly1
http://fastgs.homestead.com/fastgs.html

For Turbo or Nitrous Applications, you should run 1 heat range colder than stock. If you are using NGK's and want to stay with them, use the NGK BKR7E-11 gapped at .035"... If you have to order them from a speed or automotive shop the model number 1283. Hope this helps.

DoN

'99 GS Sports Edition
Star Stage 2, CFDF Clutch
Greddy Manual Boost Controller
Greddy BOV and EVO Exhaust
Greddy TT and shift knob
AF/X Underdrive Pulley
AEM Big Brake Kit
B&M Edge Short Shifter
Eibach Sportlines with Tokiko Blues

Thanks for the tip. I'll pick up some tomorrow.

fly1
http://fastgs.homestead.com/fastgs.html