mazda/feed

hey guys im looking to learn how to tune my rx7 i would like to know what duty cycle and ijector is and all that wideband tunner so all this is new to me i like to work on my7 myself so im ready to step up to the tunnin now thanks

RX7Wishing

how about the engine management section?

RotorJoe

I hate to say this, but it has been said to me soo many times that I have stopped counting.

But
"SEARCH"

Search the engine management sections, 3rd gen section, the single turbo section and even the advanced tech section. Hell, search all the forums. I have found all the info needed to get into more then enough trouble tuning. Be careful.

Hell, I am still told to search.

mazda/feed

HEY DUDE IM SORRY THAT I MADE YOU STOKE A FEW KEYS DIDNT MEAN TO GET YOUR PANTIES IN A BUNCH,
DID IT EVER COME TO YOU THAT I DID A SEARCH AND DIDNT FIND WHAT I WAS LOOKING FOR, SO BEFORE YOU MAKE A SMART *** COMMENT PLEASE LOOK DEEP INSIDE AND SAY TO YOURSELF " WELL IT WAS A POINT IN TIME THAT DIDNT KNOW EVER THING ABOUT THE RX7" so give me a break ok thank you

RX7Wishing

your caps lock key is on.

Mahjik

iTrader: (1)

First thing is to decide what ECU you will be using. After that, we have an ECU forum which can help you (depending on your ECU choice):

https://www.rx7club.com/engine-management-forum-37/

keynote22

Im a newb tuner as well...here's what I have been lead to believe.

duty cycle is how hard the injector is working to do what you are asking it to do...100% = bad because the injector can not supply enough fuel under the load= lean = pop.

wideband is an o2 sensor that tells you how much fuel is in the exhaust. 11's are ideal...the lower the number the richer the fuel. The data logit has better resolution than the display on the o2 wideband so I dont use it.

I run 13's at idle because I cant calibrate my tps right now and 9-11 during full throttle. I use the pfc with data logit and basically watch others tune the cells for me as we tinker with the mixture.

Based on the mods list..if you dont have a new ecu I'd stay off the boost. You're looking for a pop.

AREITU

mazda/feed

Thank You Key And The Rest Of You Who Had Something Worth Saying The Hels Out Alot Ill Go On The Other Forums And See What I Can Find Thanks Again

TurboIIRyan

We aren't known as the evil forum for our kindness ya know hehehe.

1234rotor

iTrader: (1)

The duty cycle is the amount of time in percent that the injector is open as oppesed to being closed. 100% percent would mean that your injector is staying open and not closing at that point. 85% means that it is open for %85 pecent of the time and closed only 15%.

Pulse width is the time in milliseconds that the injector is popped open per combustion cycle. Basically,it's the amount of time voltage is in a closed circuit on the injector.

Pulse width is basically what you want to change and duty cycle is kind of like a monitoring of how much you are pushing on your injectors.

You can decrease pulsewidth and increase fuel pressure to lower your duty cycle, but that will tax your fuel pump and fuel supply sytem.

saxyman990

Hate to be an ***, but if you don't know what duty cycles, injectors, and widebands are, then you seriously are not ready to "step up to the tunnin now." Spend some time to do a little research, and in the meantime, have a professional tune your car.

-Rob

BlueRex

It doesn't sound like he was flaming or being a smart *** at all. All he was saying is that you can find a lot of useful info out there if you look. If the info is too general and you have a specific question then ask away, there are probably a few tuning gurus out there that would be happy to help.