what is too lean and what is too rich?

Is it too much air and too much fuel?

what are the problems with each condition and how is each avoided when running nitrous?

thanks

also, can a performance tune create a too lean or rich condition?

 

Lean is to much air not enough gas.

Rich is when theres to much gas and not enough fuel.

Best way is upgrade you intake and fuel pump...unfortunitely I found out the other day the stock fuel pump just isnt enough......then after that get a tune...lol...that will take care of it....and yes you can create a too lean or rich tune but why would you want too make that kind of condition?

 

haha,

no i certainly would not want to create that. I was asking because I want to avoid that! So if a performance tune has the ability to create that, then I would steer clear.

that's why I was asking.


now, do I REALLY need another fuel pump and injector with a 75-100 shot on my v6? I have heard several people on this website tell me that the 2005's (at least) have excellent fuel pumps. I also had a mechanic (who would benefit from my money) say that I did not need that stuff.

I'm not attacking your point...I just seriously don't know because I don't know much about cars.

thanks

 

I'm not quite sure what fuel pump is in the 2005 V6. But if you think about it if your burning more fuel than your pump can provide...your going to have some problems....its more of a safety thing.

To be honest you dont have to steer clear of a tune in fact its probably a good thing that you get one. That way you Air and Fuel will be corrected. I'm just saying that if you have a handheld tuner or a program to change it you "yourself" could change it to create a lean or rich situation. Most professional tuners know what they are doing and wont screw that up.

 

No. A 75 shot will be just fine with your stock fuel system. By the way what kit are you looking at? Is it a wet or dry shot? If I were you and "I didn't know much about cars" I would lay off the nitrous till you do a bit more research and learn more about your car.

 

The ideal air to fuel ratio is 14.7 to 1. This gives the most power! As you get more rich then this, you loose power. As you get more lean, you also loose power and can also create too much heat which can melt engine internals.

Most Mustangs run pig rich from the factory. Ideal a/f for an n/a car is around 13.5 or so (I think). Blown cars run in the low 12's I believe on the a/f ratio to be safe.

There is always a trade-off....performance vs safety.

With nitrous, you want to run rich not lean. You really can not dyno tune a Venom system, because the venom computer is self-tuning using the o2 sensors and the venom computer. The Venom system adds fuel based on the voltage reading from one of the o2 sensors. I know this will creates a big argument among the nitrous pros, but the system works just great for lower shots of nitrous.

Besides loosing too much power, if you run too rich you can foul your plugs and you will also get bad gas mileage.

 

so basically,

too lean is really bad. can really mess up your car.

but too rich isn't really that bad...just not ideal. you won't mess up your engine.

Is this correct?

Also, if I get an Xcal V2 and have that user control at my fingertips, would it be wise to adjust my a-f ratio to make me be rich (I think you mentioned this)...or should I just get whoever I purchase it from to do it all for me and never touch it?