Blue91lx

iTrader: (44)

Hey EvoM,
I'm picking up an Evo tomorrow (from these classifieds). It needs new plugs so I wanted to get your opinion on what to gap them at. What would you suggest for gapping? Here is the combo:

Oh, and the plugs are NGK-BPR8ES, which are one step colder than stock.

Engine:
Garrett GT35R (20-21#'s)
Tial 50mm bov
Tial 38mm wastegate
Shearer t3/t4 tubular manifold
FabThis custom 3"inch vband downpipe
FabThis custom intercooler piping
FabThis custom dump tube
Brian Crower 272 cams/springs/retainers.
RC 1000cc injectors
Dual walbro 255LPH fuel pumps
Steel braided fuel rail line
ARP head studs
JE 10:1 compression pistons
Golden Eagle connecting rods
Turbo xs 3" fmic
Hondata intake manifold gasket
AEM EMS
AEM wideband
AEM Boost controller
AEM oil pressure gauge
Stewart Warner 40psi boost gauge
HKS Super mega flow 4" intake & filter
Exedy twin disk clutch
AMS Balance shaft delete
Powerflex front stiff engine mount
PWR dual core radiator
Thermal Research full 3" exhaust fit to jdm rear bumper
Koyo radiator

Any help would be greatly appreciated.

Thanks,
Bob

awdordie

iTrader: (1)

I would gap them around .022-.024

evo unknown

iTrader: (25)

Our set ups are different, but if it helps I gap my BPR 8ES to .024

Steed77

iTrader: (14)

I have a somewhat close set-up, .024 would be my starting point.

Just my .02: Also you can try to run the BPR7ES @21-25#, if the car feels sluggish on the low end. But your 10:1 Cr may not let that be possible. Log and look for knock and watch the knock voltage.

Blue91lx

iTrader: (44)

Thanks for the input. I will start with .024 and go from there. @Steed77 - The builder said to only use BPR8ES for now, as I'm not upping the boost quite yet. When I do, I'll look into the colder plugs. Again, thanks for the help!

golgo13

iTrader: (134)

Pump gas?

Blue91lx

iTrader: (44)

Oh crap I totally forgot to include that. Sorry. Yes, I only run 93 octane.