I'm reflashing for my cats and pulleys up in Torrance after Christmas. If I left b4 then I may get killed lol.

 

A chalk, white porcelain insulator usually indicates a lean condition, hot plugs (incorrect heat range), pre-ignition stage; and Metallic specks, would indicate that you're moving up stihs creek.

This site does suggest that lean running engines could also be caused by exhaust system

G

 

In reading this post it seems to me that the people running lean have the ts ecu, fi or cams. Now its common knowledge that with a tuned ecu, fi or cams, anytime you open the exhaust up it will cause the car to run lean. I guess I'll wait to see if someone with a stock ecu and basic bolt ons runs lean. Also if that was the case I would think that any type of cat replacement would cause the same problem. Unless maybe the rt cats aren't flowing as well as they shold creating more heat and then creating a lean condition?

 

I'm confused? According to the NGK site, your plugs are normal. The pic that NGK provides seems like a lean condition to me as well. Any experts on plugs here?


Here is NGK's description
Normal Condition
An engine's condition can be judged by the appearance of the spark plug's firing end. If the firing end of a spark plug is brown or light gray, the condition can be judged to be good and the spark plug is functioning optimally.

 

I am running soo lean with my RT Cats / K&N Typhoon / NISMO Cat Back that I have this really thick black stuff on my exhaust tips...

I try cleaning it off, but by the time I get to work it is back again...

:-/

hehehehe

I am being sarcastic if no one could figure that out... about running lean.. I am running quite rich...

 

Jason,

Will an intake manifold leak cause the engine to run lean? My car died on me the other day, and then would not crank till I re-installed my plenum. I had taken my plenum off the other day, and I am positive that I had all the hoses connected well. I checked my plugs, and they look very similar to this.

 

.....on Jason's exhaust tips in person. He is either running really rich............or it is the result of the two quarts of oil he has to put in his car every day...........lol J/K

 

He means at WOT the car is in open-loop.. which means its not looking at the o2 sensors to adjust a/f (no feedback = open loop). The car is just going off its pre-determined fuel maps.. there is no feedback from the o2 sensors adjusting that statically defined map.

 

HOw much does it cost to get the ECU flashed? How are you guys getting your A/F ratios? Do you have A/F meters or is that just from Dyno's?

 

most places can check boost and A/F readings while you dyno your car.

 

How about the cost of flashing?

 

http://www.technosquareinc.com/nissan.htm

 

I flashed at TS added the cats etcd several thousand miles ago and just pulled the plug. Porcelin is perfectly tan, engine is healthy, plugs are slightly rich like Jason's. I attribute this to my larger injectors and that I was FI on stock range plats. I now have copper 1 heat range cooler gapped at .37

Anyways, as promised here is my plug pulled yesterday. NOT lean.

 

Looks good to me!

 

12secZ,
what do you mean "larger injectors"? Did you buy news? So does this mean that to avoid becoming lean, we have to buy these too?

Also, what do you mean by "FI on stock range plats"?

Also, why did the Adm. remove the "quote" button?

thanx

 

It's just been renamed to the "reply" button. The small reply buttons inside each individual post will quote that post. The big reply button at the very bottom will do a generic non-quoted reply.

 

FI is Forced Induction Turbo, Super Charger and the Administratrion here has made a whole new section for it.

When you go FI or N20 (Nitrous) you usually need more fuel so I bought larger Injectors..

If you were just a stock car (N/A) then no, these injectors wouldn't help you like you think they would on your plugs with RT Cats. At least I don't think they would, I think you would need to piggy nack or reflash the amount of fuel going to the plugs. Plats is Platinum, I switched to Copper.

 

Well, A Leak there would alow for more air to enter your engine then your throttle body is opening up to take in. So quite possibly yes.

It seems that for people who install the plenum NEED to get a TS update so the engine can be reconfigured to deal with the new air flow the plenum alows for.

 

yeah I have to reflash, plus when you remove the TB you have to reset the TB position and too. I am really wondering hard today about my reflash, just thoughts in my head I don't know the answer too yet.

Like my TB positioning was adjusted by TS via flash (A5T) I am wondering when I go into diagnostics mode and reset the TB position or heck even clear a code what effect that stuff I did in Diagnostic mode had on my TS TB flash etc? I know some of it is hard coded EPROM but I wonder if some of it is EEPROM?

Like I reset my ecu yesterday doing the 3, 5, 7, 10 dance, any effect on what TS did because of this Jason? I'm going back anyways just curiuos.

 

Or is it PROM and EPROM when flashing? Doesn't matter I guess my question is does changes in Diagnostic Mode effect the TS reflash?