LFA951

I first started using Bosch Super Copper Spark Plugs when I got my car 4 years ago, since LR promoted them on their website and they were OEM for our cars. As I read here the negative feedback on the Bosch Plugs, I saw that they were on the silvers and not the coppers. So, I started using the NGK plug because of the overwhelming feedback here. It's been my experience that the NGK performs satisfactory for a few months and then it starts misfiring. I used the standard 6 for street use and not the 7 that everyone here uses. I recently put the Bosch back in, and not only are they better built, they have the U-groove like the Nipo Densos and the have a nicer rounder shaped side electrode, they come pre-gapped at 0.28", and they feel much better than the NGKs and I am going to keep them...

http://www.boschautoparts.com/sparkp...SuperPlus.aspx

Bri Bro

What P/N you using? I found a Bosch W7DC or a W6DC (cooler) at one site.

LFA951

It is 7100...it's the W7DC

Bri Bro

Are you talking about the super plus? THat P/N is 7900. The W7DC is the super plug.

" BOSCH Super Spark Plugs - W7DC Pack of 1"
" Bosch 7900 Super Plus Spark Plug , Pack of 1"

LFA951

I have the Super Plus, the one on the link I provided...

95ONE

They have wings and are more absorbent.

rlm328

Have you got that thing running so it will last an entire weekend yet?

minho78

Well thanks to this Topic I just went out and bought the BPR6ES. I was runing the Iridium and I think that this car doesn't like them.

95ONE

By my current calculations.......


Take the 4 and divide by the common denominator, carry the 6... =

Forever and a day!... It will certainly be ready then..

Leaving in 30 minutes though, for TWS.. Going to ride with Gene and Viking on this open track day.. I should leave now!.. lol

jasonlp

why?

LFA951

That's too bad, you would've seen a big improvement with the Bosch Supers...

LFA951

Because I use it for street and not track and I have about 50 hp more than stock which is less than 300 hp and the 7s fouled up when cruising at highway speeds...

minho78

What part number is the one that you are using. I can't find the 7100 that you are talking about. They do have the 7900(super Plus).

LFA951

Ooops, it is the 7900, the Supers that are on the link...get them, they're awesome, forget what they say here, they are better than the NGKs, monkey see monkey do

minho78

I'm exchanging the BPR6ES after work for the Bosch 7900.