can somebody tell me please which sparks are colder? nkg bpr6esII or bpr5esII??
i know its a stupid question!

4g63n/t
drive fast and kick ass!!!!
excuse my english!
NOS-wet-kit,s-afc,underdrive pulley,remus-exhaust
225 goodyear eagle f1,8x18 OZ racing rims
turbo gs-t

Hey eclipse286,
I checked out what all the letters stand for on the ngk website www.ngksparkplugs.com
under Tech Info.

Letters explained:
Go here, and click the last question on the page for the letter designation of the NGK plugs:
http://www.ngksparkplugs.com/techinfo/spark_plugs/faq/index.asp

Click on this question to download the pdf file.
Q: What do the numbers and letters in a
part number represent?

But basicially,
Y - is for the V-Grooved center electrode
A - is for special design, whatever that means.
Hope this helps.

1996 Eclipse GS
MaxSpeed Racing Muffer (c/w Silencer), 2.5 Inch Cat Back Pipe, AEM CAI, Magnecor KV85 8.5mm Competition Spark Plug Wires, NGK BKR5EYA-11 Plugs, Symborski Shift Kit, Hurricane_GS Short Shifter, MaxSpeed Racing Pedals, Import Intelligence