Ok, I am trying to figure out if I really need to run a air/fuel ratio gauge or not.
Looking at buying one of these
https://www.rx7club.com/forum/showthread.php?t=413030

It has 3 holes and I need a boost gauge and a volt gauge.
Now to figure out if i should run a Air/fuel gauge or a oil pressure guage.

I was told buy several people the the air/fuel ratio gauge is worthless and only will tell you after it is too late. I don't really agree with that but not sure If I should run one.
I have 30k on mazda reman and have all of the following to install.

HKS Sport Turbo
HKS exhaust manifold
HKS waste gate
HKS PFC-F-CON with the sport upgrade chip
HKS Graphic Control Computer
HKS FCD
HKS Turbo Timer
720cc secondary injectors (RP)
Bonez down pipe and HF Cat
Dynomax superturbo catback exhaust (Mazdatrix)
3rd Gen Fuel Pump
ACT clutch/light weight flywheel


Thanks

 

The normal narrow band AFR gauge will not be for tuning.
I do like it for troubleshooting & spotting problems.

You will see when you're in closed loop, the value will hunt up & down.
And if the idle lean down is working.

They react so instantly you can actually see a bad injector.
The display will fan out instead of showing a steady value.

 

As SureShot said, a narrow band AFR should not be used for tuning, but it is helpful to see if your AFR is in the ballpark. That said, there may be other gauges that will be more helpful. I would recommend Exhaust Gas Temp (EGT), oil temp, and/or water temp gauges. Personally, if I had three spots for gauges, I would run Boost, EGT, and oil temp but its personal preference. For AFR, I would run a wideband.

 

Ultradef's setup is the better way.

Mine is the cheap way..

 

So what about this setup then?


Two on the a-piller
Boost
AFR

Three below the radio
Oil temp
EGT
Volt

I think that will cover all the bases. really want a volt meter so i know when that system starts to act up.

Chad

 

Doesn’t your turbo timer have a voltmeter function??

 

That setup sounds like more than enough.

 

My turbo timer will be leaving this setup.
I am getting a very nice car alarm ( See below) that has a built in turbo timer.


Compustar 2WSS-AS Two way alarm / Remote Starter
900MHZ Spread Spectrum 1.25 Mile range

 

get rid of the volt meter and put the two more important gauges on....

 

my set up has a boost gauge on the piller, and on the din I have water temp, dual EGT gauge, and a wide band A/F gauge. (I have the same din thing that you're getting) you can add another gauge to the piller if you want and add the voltmeter somewhere...

 

Nope sorry need the volt meter. Besides what other gauge would I need?
I mean I have ordered the following to go in this 7

Boost
AFR
Oil temp
EGT
Volt

I think that covers just about all the bases.

 

get a water temp... not an oil temp. you don't really need an oil temp. (I'm pretty sure it's actually the same gauge though )

 

i have Boost and EGT gauge on the pillar in inside the glove box i have oil pressure/water temp/voltage when i dont have a passenger stays open all the time but all my factory gauges still work and ill soon be getting some other ones below the radio myba an oil temp a/f gauge
TwEaK

 

Water temp is on the cars cluster.
All the guages work well.

I have already ordered the guages and should have them and have them installed soon.

Thanks for all the help.

 

dont you have either a boost gauge or volt gauge in your car?
you could put a volt gauge on the cluster?

 

The car is a Turbo from the factory (91TII - look in my Vb-garage)
so the boost gauge is were the volt gauge would be in a NA.
The boost gauge is not in PSI, so I am adding a PSI gauge.


Link to garage
https://www.rx7club.com/vbgarage.php?do=view&id=6865

 

you shouldnt need an oil temp gauge because the oil cooler as alot of people prob know will support 600hp. that more than enough cooling. i have always found a good oil pressure gauge to be useful.

 

Oh boy...
Be careful what you say.

Have you ran 600hp with the stock oil cooler???


-Ted

 

Shoot man, you can do 500 on the stock TMIC!

 

The stock water temp gauge on the S5's suck ***. Get an aftermarket water temp.