ChrisJ951

Ok, so I bought 4 NGK BPR7ES spark plugs. I think the gap is 0.28. What exactly does the gap do/mean? Should I make it smaller or larger?

Thanks

special tool

That will do - leave them there.

ChrisJ951

533 RWHP. how did u get that?

special tool

Vitesse big valve head ("Sledgehammer")
Vitessse stage 3 turbo (off the rack)
044 Bosch fuel pump
72 pound Siemens
Tial 38
Fidanza flywheel
Double stock intercooler
Kep pressure plate (stage 2 - 800 ft./lbs. yes, I need it)
Woody Weiss copper/ceramic 6 puc clutch (no springs - they are for little girls)
titanium retainers
racing valve springs with 2.5 "S" shims (don't say I never told you guys nothn')
500/475 cam (thereabouts )
SMT6 - full timing control
Zeitronix wideband/boost etc.
SFR stage 2 header/crossover - 3 inch downpipe
Lindsey 3 inch exhaust
Borla 40944
4 channel EGT aviation guage
black ****
Defi D 0-35 psi guage
Vitesse Motronic wasted spark
NGKBPR7ES
Sequential Motronic fuel injection
AN boost lines
AN fuel lines
ARP rod bolts
Widefire (O-rings are for those without proper tune)
Port-match intake

ChrisJ951

How many pounds of boost? Is this on pump fuel?

special tool

You should probably do a search- there are about 5,000 threads on my car and almost as many posted dyno sheets.

testarossa_td

https://rennlist.com/forums/showthre...ghlight=BPR7ES

Searchy mc search search...oh heck Search Shark

Headhunter

I thought our cars didn't require a plug that had resistance because it was already built into the wire? Am I wrong? I've always bought BP7ES.

ChrisJ951

No clue headhunter. I was told to get a plug that runs cooler due to the higher boost.