Plugs after 3 pulls............

[robert]

1 on motor 2 on spray
It missed badly on both nitrous pulls at 6500 13.6 afr
Bumped the fuel pills going again tomorrow,
PSI not the issue-stand alone fuel cell w/internal pump for Fuel solenoid

here are the plugs from the last time NGK 7
changed them for heat range #8
Just sharing in case some of you out there see something I missed
Thanks for looking

1-4 left to right




5-8 left to right




#5 only one with some "pepper" marks

[JETFAST]

how much nitrous? what fuel are you using? how much timing are you running? is this carbed or fuel injection? looks like you may have some oiling issues on a few holes.

[black50]

#3 little on the lean side maybe?

[robert]

how much nitrous? what fuel are you using? how much timing are you running? is this carbed or fuel injection? looks like you may have some oiling issues on a few holes.

175 shot, c12 for nitrous only stand alone cell, EFI diable chip tune.
noticed the oil too...

#3 little on the lean side maybe?

It did lean a bit 13.6 afr, not sure what's causing this as it has a custom tune...

[JETFAST]

Were these plugs pulled on the dyno after the pull, or after you loaded it up and took it home?

[robert]

Were these plugs pulled on the dyno after the pull, or after you loaded it up and took it home?

After driving it home....

[JETFAST]

the oil tells me you already have some ring sealing issues going on. the fuel on the base ring tells me they were not pulled after a wot pull. 175 shot means nothing to me. What is the nitrous jet size? single nozzel or plate? are you running high fuel pressure or low fuel pressure? what fuel jet? Where is your timing at?

[robert]

the oil tells me you already have some ring sealing issues going on. the fuel on the base ring tells me they were not pulled after a wot pull. 175 shot means nothing to me. What is the nitrous jet size? single nozzel or plate? are you running high fuel pressure or low fuel pressure? what fuel jet? Where is your timing at?

Dual shark nozzle set up
Low fuel pressure (carb pump) with pair .54 fuel jet's.
Timing is where tune(chip) is or supposed to be= not sure..

[JETFAST]

what are the nitrous jets? what is your fuel pressure?

[robert]

what are the nitrous jets? what is your fuel pressure?

.52 8-10 psi

[JETFAST]

you should be alot richer then 13.6 at wot with those jets and fuel pressure. you have an up stream air leak, a bad sensor, or you are sampling after a catalytic converter. thats also closer to 200-225 depending on the configuration of the n2o side of the system. and around 400 worth of fuel. i would not ad anymore nitrous until you get it sorted out, or surley you will hurt it, if you haven't already. looks over timed over rich to me. but hard to really say as they were not pulled after the pull.

[robert]

you should be alot richer then 13.6 at wot with those jets and fuel pressure. you have an up stream air leak, a bad sensor, or you are sampling after a catalytic converter. thats also closer to 200-225 depending on the configuration of the n2o side of the system. and around 400 worth of fuel. i would not ad anymore nitrous until you get it sorted out, or surley you will hurt it, if you haven't already. looks over timed over rich to me. but hard to really say as they were not pulled after the pull.

Wideband was read via tailpipes, no cats 3" exhaust
I think my issue is with the switch selection for the tune as it missed as
if rev limiter was on which is at 8k on the nitrous tune or should be.

Not the session in issue with the 13.6 afr, this session returned with 2 step higher jets on fuel
still missed this time at 6300-after this bottle ran empty....

[sickpony]

need to pull the plugs right after the run or you are reading the info from the ride home.

[junk racing]

need to pull the plugs right after the run or you are reading the info from the ride home.

X2 need to pull plugs after run to be acuurate.

[Blakeski]

I say the timing is off. Are you running it set for the tune or the spray? Also what cam are you running?