to low of plug gap?

[wild_maxx]

my turbo seems to be falling on its face and its only boost 5 psi. brand new turbo, used magnacore 8.5mm wires, denso iridium 2 steps colder than stock and it seems to die right off. the plugs are at .22 right now could that make it just die off like that. it barely even moves. also, i have a real tial 38mm external WG, i should be hooking up the port on the side correct? what is the top one for?

[MarkEmark]

my turbo seems to be falling on its face and its only boost 5 psi. brand new turbo, used magnacore 8.5mm wires, denso iridium 2 steps colder than stock and it seems to die right off. the plugs are at .22 right now could that make it just die off like that. it barely even moves. also, i have a real tial 38mm external WG, i should be hooking up the port on the side correct? what is the top one for?

Generally, you want the highest gap possible without it being blown out.....0.022 is way too low for 5 psi. I'd keep stock gap for 5 psi. I had .032 for 15 psi...Just gap them to stock and see how it runs (if you're not going past 5 psi for a while).

[klattr1]

just try .034" for just 5 psi. .022" (which i think you meant to type) would be like for running 24+ psi.

if it feels like you are hitting a wall, then its prolly other issues like boost leak, bad coil, too rich, etc.

[nissanfanatic]

Quote »i have a real tial 38mm external WG, i should be hooking up the port on the side correct? what is the top one for?[/quote]Side port is for opening the wastegate. Top port is for closing it. You can use an EBC and it hits the top port with boost to close the wastegate when boost begins to go down. It uses this method to keep boost very steady.

[Structure240sx]

i have my plugs down to about .020-.022 for up to 30psi with no blow out, i also have an msd ignition.

like markemark i was running .030-.035 for 9-15psi

[Structure240sx]

btw

have you gotten it on a wideband?

i just put an safc and my wideband in a s14 ka-t from new york that was running a jwt ecu. it was running so rich in boost the car was falling on its face sputter. seemed like it was blowing out spark but i leaned it out and it was pulling great

[wild_maxx]

yes i do have a wide band. the jwt ecu seems pretty good ikn boost. around 11-12 at WOT. i am going to change the plug gap today and check my piping ffor any leaks.

[huguetpj]

I've tested the plug gap quite a bit myself. This is my results with Nology wires and coil:

0.040 - up to 9PSI0.030 - up to 16PSI0.026 - well... I blew the engine @ 18PSI so I now it should be able to hold 18PSI without blowing.