want to gain more hp and stay naturally aspirated

i know i have to get higher flowing injecters
my question is :
Cant i get some higher lb/flowing injecters with no adittional upgrades ?

i know this may cause the engine run too rich
(do i have to go into the cpu to correct?
or can i just change the fuel pressure at the regulater or can i use the air/mixture screw on the throtle body?

i really don't want to deal with the computer

 

i meant to put this i the performance section not;general tech....its already a duplicate
i dont want to make another

 

I think that additional horsepower is created by burning more of the air fuel mixture at the the ideal ratio. By adding fuel only there shouldn't be much gain unless it was already starving. If you improve the air flow by intake/exhaust/porting then you need and will benefit from more fuel. Just my guess...and why would you add bigger injectors if you're not doing anything else to the car? It would be better to do intake and exhaust and leave the fuel alone.

 

in order to make a certain amount of power i need to overall upgrade the injecters especially on the count that i want to stay naturally aspirated

 

Adding more fuel alone will not increase performance. You need to add more air along with it. You can do this by compressing the air (supercharger, turbo charger) but since you want it to be naturally aspirated, your other option is nitrous oxide (during the combustion process the nitrogen and oxygen seperate, raising the amount of oxygen thus allowing you to add more fuel.) You can't machine a rotary engine to increase the area of the combustion chamber like you can bore the cylinders in a piston engine, so their are no other ways to make the engine capable of ingesting more air. You can take the power that it already makes and have more of it go to the drive wheels by reducing the weight of the car or reducing the weight of things that the engine must rotate (lighter flywheel, lighter driveshaft, eliminate the air conditition, eliminate the power steering pump).

There is nothing that can be done to the stock ECU to tell it that you are changing the amount fuel that the injectors are delivering.

Changing fuel pressure will change the air fuel ratio. Without the ability to change the curve of the spark timing, There is not much success to be gained by changing the fuel pressure.

basically, adding different size injectors is a bad idea. The ECU will signal the new injectors to open for the duration that opened the stock injectors. If you have the new injectors open for the same duration but have a higher fuel pressure or higher flow rate, you will inject more fuel in the same amount of time. This will lower air/fuel ratio. If you lower the fuel pressure or lower the flow rate from the stock size of injector and have these new injectors open for the same duration, this will raise the air/fuel ratio.

 

what if i add a safc/piggy back fuel controller .....ignition controller ...

so you saying i cant add air

no nitrous

 

theres no way to lean out the engine /by a mixture screw?
ignition controller?

 

so lets say i do go with an injector upgrade what kind of power can i expect to gain (13b natural aspirated engine 1987)current hp 140-what 160...i want to gain 60-100hp can i do it piggy back fuel controller.,ignition box ,timing controller....??

 

Not trying to be insulting, but apparently you have little understanding of AFRs, intake/exhaust and how to improve hp in a rotary. Rotarys run on the rich side to begin with, NA and turbos. Simply adding more fuel without any other mods will richen the mix and reduce the hp.

If you want 60-100 more hp, you're will need to rebuild and port the engine, replace the entire exhaust system with headers and larger diameter piping, toss the stock ecu and go standalone.

You cannot get more hp on fuel alone, you have to add more air and then be able to get the air out of the engine more efficiently than the stock exhaust. A full exhaust upgrade will get you 25-30 more hp by itself. After that, the engine needs ported for your goals. A good sized street port, along with exhaust, will get you close to 50, maybe 60 more total.

Beyond that, it's bridgeport or forced induction time.

 

ever seen a intake manifold with more then 1 throttle body i seen a honda with /aftermarket /or cutom intake manifold with 4 throttle bodys

i was thinking of getting a cutom intake manifold that can hold and flow /with two throttle bodies ..would that do the job

 

http://us1.webpublications.com.au/st.../3049_10lo.jpg

 

While going with more throttle bodies will accomodate more air to be ingested, unless you do some porting to actually increase the pull of air into the engine, hp may go down due to loss of intake velocity. It's the same as adding too big of a carb on a piston engine and not doing any head work or increasing the bore/stroke.

Try as you might, for the hp gain you want, you'll have to port the engine. A fuel controller may get you by with a medium streetport, but to get the most out of it, you really need to go standalone.