I was told that the rx8 run extremely rich because mazda wanted to keep the cat alive for a longer period of time, just wondering have anyone here actually lean out their car while having a testpipe installed?

I'm actually planning to get a testpipe for myself soon, mainly cause I want to lean out the engine....lean= more engine heat, less fuel intake, more horsepower....sounds like a pretty good deal if you don't live in some hot area

if you had done it, where or how did you do it?

 

so you think if you put it a test pipe you are going to lean out the engine???

beers

 

I'm planning to lean out the engine, yes, cause the cat is no longer there, I just don't see the reason why the engine has to run that rich anymore

 

and you are going to lean the engine out how?

beers

 

that's what I'm asking, if anyone had done it, if so, how? if there is a way

 

yes,

right now your options are a racing beat flash. mazsport Interceptor X, and the greedy emu.. and the power mod from aus.

some other stuff is on the chart.

beers



you might read some stickys. and the ems fourm...

beers

 

you are a hard nut to crack swoope

 

you dont even know,,

i am calling back lent out parts... got drama...

i think the rev switch is safe right now...

got learn, and dance..

beers

 

that sounds bad ......

 

Wow I hope you get your things back swoope.

To the OG posted if you want less heat get a high flow cat and after-market exhaust.

 

i know in piston engines Lean = Boom.

 

In any engine TOO lean = Boom. The 8 is just running TOO rich from the factory. Hence why when you lean out the engine you will gain some ponies and get better gas mileage. Rotaries produce some hot exhaust, hence why Mazda flooded the engine with gas to preserve the catalytic converter's life span to pass U.S. standards.

 

oh man, here is a whole science to leaning this engine out, go read in the ems forum, you will find a LOT of useful info

 

I imagine it would be possible to alter the mixture (richer or leaner) of the engine over a broad set of conditions by changing settings in the computer (firmware?). Having said that, I think one would really have to know what one was doing to make any improvements in fuel consumption without damaging the engine. As the mixture is made leaner, temperatures will rise and eventually peak. Some engines will detonate if the combustion temperatures go too high and this condition can destroy an engine very quickly. The scary part is that you can not always detect detonation by sound or feel; by the time you become aware of it, it is probably too late. I do not know if the wankel is prone to detonation or not. Perhaps it is more tolerant to leaner mixtures than a typical piston engine.

None the less, this is an intriguing question. It reminds me of the days when I used to tune a Weber 2 barrel carburetor on the 4-banger in my Mercury Capri. I ran the engine fairly lean in the light/moderate throttle setting area and richer (for better power) in the secondary, high/full throttle area. This gave decent fuel mileage at light throttle settings with little or no sacrifice to the top end performance.

I would think our much more sophisticated computer-controlled engines could be tuned along the same line of thinking, only much more precisely. Perhaps the Mazda engineers have already done that...

1.3L

 

you can, get an EMU, read the emu forum, im not saying it to be a dick, im saying it cause there is a world of information there, just go look, you will learn really quick