Unless you go so lean that combustion can't occur.

Let's also remember lean backfires/popping, pingies, inaudible highfreq detonation you can't hear, and engines/exhaust systems louder than the sound of detonation (however it manifests).

No, stochiometric mixtures make more heat. Lean mixtures create less water vapour, which is what primarily cools the engine.

Negligible increases in power, and peak usually occurs on the rich side of stoich due to inherent inefficiencies in the combustion engine.

 

meh its prolly some h/s kid that bought his car boosted and jsut doenst know what the ---- he is talking about

 

ermmm, ok sorry about racing on the streets but theres no fukin place to race ere,

 

I race on the streets. Many here do.

I do not do it in the rain, I *DO NOT* do it around traffic. It's called time and place.

 

I beg to differ. Just going going from 12.8x to 11.8xx lost me about 4-5% torque. To me, that is not negligible. Going from 10 to 11 for example would make even more of a difference.

 

From lean misfire to rich breakup, fuel *with ignition properly tuned* accounts for an average 3% variance in power. Two degrees of well placed ignition timing will do you better.

Noticeable changes in power from small variances in AFR are a good sign of ignition timing fuckage.

 

No two degrees change in timing will ever change the output that much, unless the timing is way off. I mean by >10 degrees. A/F to HP and timing vs HP are both exponential. Getting closer to the best value nets you less of a gain. Changes in fuel are better though.

Lean misfire is cause by ignition breakup. That is contributed by a weak ignition system or poorly gapped plugs <- catch 22, gapping the plugs down creates a weaker spark.

 

im with jd, timing is were all the power is at

 

MADMAX, I disagree slightly to strongly with everything except gap is in direct proportion to spark strength - ASSuming constant air gap resistance, which does not occur in turbo, or any, gasoline engine.


You

 

conclusion?