I wanted to share a nitrous plug for anyone interested in learning to read plugs, this is a plug out of my buddy's car that i tuned yesterday, it is a full bolt on camaro with a vic jr and 4150 tb with a Nitrous outlet spray bar setup, this was done on 93 octane pump gas pulling from the rail with and ngk 7 plug. His base timing was roughly 28 degrees so i pulled him down to 19 to start the first pull and make sure his fueling was close i believe he has a 70n 34f in it and after the first pull the fuel looked very close, so we loaded up some more plugs and made another hit and i started sneaking a degree of timing in until 3 pulls later we were at 21 degrees total with a little heat starting to show on the plug. All pulls were done in viva la mehico



I personally think its a touch on the lean side, but given the conditions to tune in i think we did a pretty good job On a side note i wanted to get one cut open for everyone to see bit we havnt got that far yet.

 

As I told you yesterday Brandon that plug looks very good for the short amount of time you had to get it there.

I'd like to see the honey color a little further towards the tip, but other than that I think it looks great! Maybe a 35f jet and see what it looks like then!

For those looking for a good plug to reference this is it!

 

Oh yea......VIVA LA MEHICO!!!

 

Thanks Martin, I actually pulled him down about a half a degree and called it a day after this, i feel this tuneup should be very safe for him

 

Looks real good.

Brandon, sorry I didn't call you back, I will try to get in touch with you this evening.

 

If it only has a short run on it then I would say it has to much timing.
Probably little lean also for a short run plug.

If it was a full 1/4 mile plug I would still say pull a couple * out and see if it likes it.
1/8th mile or shorter run it looks to hot.

JMO.

 

it is a 2nd through 4th gear pull just shy of a full 1/4, it definitely responded well each degree i added to it, also wayne this plug has 2 full pulls on it, heat was not showing after the first pull so i added 1 more degree to it and it clearly showed heat on this one.

 

I know this car. . .

I should really do some plug pulls for my baby .052 jet to get ready for the big boy pills in the future.

Great thread, thanks for sharing

 

After hearing that I'd say its real close, keep and eye on it when the air changes. Good luck with it.

 

I appreciate your input as always man! And yes we had micro switch problems later that night so i will be monitoring his tuneup after he gets it squared away again. he freight trained that 2011 5.0 mustang though lol