aitrus16

Quick question about plug gap.

So I totally forgot about gap when doing my turbo build.. I have a UR kit (log manifold with a garret T3/T4 turbo).

Anyhow I went from OEM plugs(gap like .043) to NGK BKR8EIX(out of the box gap .031 and one step cooler, I guess I just assumed the plug was gapped right, right out of the box.. wrong to assume)

So I have been doing some searching and I cant get a straight answer on gapping.. Looks to me like the most common answer is to gap the plugs to .028 or .030.. but some people say to go back to OEM gap..

I am thinking smaller is better but wanted to get some expert advice

Please and thank you

jpetch05

My tuner says .020 VERY FCKING CAREFULLY

s2knoob89

With boost you need to gap them at .030 or below.

aitrus16

what are you saying by "VERY CAREFULLY" ? sorry might be an odd question

Any negative in jumping to .028 or should I tweak it at .03 and see how she goes first..

s2knoob89

You need to be careful not to damage the iridium tip. Gap them down to .025 and go from there.

JDMBLINDIAN

My tuner gapped them to .024

aitrus16

is there any negative in going down to .025... I know increasing in space can cause issues but I dont know if reducing space poses any issue.

s2knoob89

No negatives just don't damage the tips

camuman

U gap closer cause stock ignition system can't fight boost. Do a kbas and u can run oem gap no prob. Otherwise start at .030 and work your way down until it doesn't break up in boost

sohc_mshue

Like Camuman said start high and work your way down to get rid of any spark blowout. I run .018 on mine with e85.