spark plugs..... what do you use

[cyman]

i have had a look at some of the threads for spark plugs and would like a bit of an check to see who is using what in there engine.
 
my rex is putting out around 300bhp and i want to get the best heat rating plugs for it.
 
obviously standard are ngk BUR9EQP and BUR7EQP but there are also these BUR8EQP available which are in between the 2
 
i have read that some people run 9\'s all round but that it can be more prone to flooding. and some people use standard setup in mild tune form to be safe.
 
if you know what you use maybe you can post here along with approx power and whether it has worked better for you or not.
 

[RobbieRX-7]

Im running 7\'s and 9\'s pushing 320bhp. The car likes these plugs right now

[peterwolds]

run ngk 9\'s all round for 2 years started with standard bhp now 305 rwhp never flooded, main thing is dont start & stop the engine quick take it for a run to get nice & warm

[m4drx]

most run 9s all round mate as do i.

get them locally for around £40 i think

[Martiny]

8s all round

[m4drx]

You can get the BUR9EQ ones but the better ones are the BUR9EQP ones. i know i shouldnt know that off the top of my head :spank

you can get 7s 8s 9s 10s 11s 12s you get the idea :p lower is hotter and higher is colder so higher is for higher performance and hotter running but absolute stock would be 2 x 7s (leading) and 2x 9s (trailing) but due to 7s being hard to get hold of 9s are widely used.

[cyman]

You can get the BUR9EQ ones but the better ones are the BUR9EQP ones. i know i shouldnt know that off the top of my head :spank
 
you can get 7s 8s 9s 10s 11s 12s you get the idea :p lower is hotter and higher is colder so higher is for higher performance and hotter running but absolute stock would be 2 x 7s (leading) and 2x 9s (trailing) but due to 7s being hard to get hold of 9s are widely used.

i understand how the plugs numbers work (used to be a mechanic)and the stock plugs reccomended.  i am trying to find out what people use for there bhp and whether its gonna be a performance choice or just because like you say the nines are easier to get  :chat :chat :chat

[20B_boy]

9EQPs are \'right\' for 90% of FDs. Running 1 bar+ boost, use colder plugs.

[SmbFD3S]

Running 9\'s all round too, which it seems to like, on standard twins, Apexi PFC, custom 3" exhaust with sports cat

[Kash_]

Using HKS NGK\'s 10\'s all round

[Lum]

I use 2 x B9EGV  &   2 x B10EGV  NGK plugs, running about 400bhp, did switcg to 10\'s & 11\'s but they had a tendancy to foul up if i was sat in traffic for too long!

[N777CK T]

I use 4x B9EGV !

[batman]

BUR9EQP very nice

[efiniste]

I\'ve got 4x B10EGV surplus to requirements if anyone wants them. £25 posted.

I\'m currently running R7420-10s and 11s. Greddy branded but made by NGK.

Steve

[Jono FD3]

9\'s all round for me

Jono