Alx7

i was wondering what are the gauges that i need to buy, for reliability purposes..etc.....
right now i only have boost gauge...
my mods are ..
1. apexi power fc (not tune yet)
2. apexi avc-r boost controller
3. apexi n1 catback exhaust
4. apexi power intakes
5. hks downpipe
6. atr midpipe
7. street port motor with stronger 2mm apex seals

and more goodies.....but this does the power...

BrianK

well, the regular... boost, water temp, a/f.

I know you can read boost on the PFC Commander - don't know how accurate or quick the response is (I don't have one).

Water temp because the mazda gauge is not linear & doesn't show an actual temperature

a/f to make sure you're not going lean, although I've heard mixed reviews about how useful these actually are.

might want to think about oil temp.

Alx7

thx for the reply Brian,

is the A/F gauge better than having a EGT gauge????

RyanC

I would go with the EGT gauge over the A/F gauge. With the A/F gauge reading off the stock O2 sensor it just isnt very acurate.

JoeD

i think the best way to go would be to have a boost gauge, EGT, and water temp. then you could get an Apex'i Turbo Timer which has an A/F monitor (kill 2 birds with one stone!). and on top of that, you will have all the cool info from the PFC.

youll know all the vitals of your car.

Alx7

appreciate all the replies.....
thx
Alex

BrianK

Which Apexi turbo timer has an A/F monitor? This one doesn't seem to: http://www.apexi-usa.com/electronics_timer.asp

I would be interested in one if it exists.

JoeD

http://www.rxecret7.com/apex-24.html




you're welcome.

DK

iTrader: (5)

Wow ... JoeD and I agree again. And like RyanC said, the A/F gauge just doesn't tell you much, the EGT will tell you much more if you know how to interpret it. But maybe all of the pretty lights on an A/F gauge are good for the holiday spirit?

But, you forgot the gas gauge! Ahhh, ahhh? Uhhhh ... nevermind.

Apexi

Let me say that from a lot of time spent on the dyno tuning and after hundreds of dollars spent (the crucial part 90% of FD owners seem to skip out on) I can say this:

Air Fuel guage- pretty lights to bounce with your stereo...that's it. You can NOT use it for absolute readings whatsoever.

EGT- you can get absolute readings, but they also vary depending on where you mount your probe. Since most people mount on the DP right at the top near the O2 sensor, you should be getting no more than 700-750C at WOT.

BUT BOTH GUAGES ARE ONLY GOOD FOR RELATIVE READINGS PERIOD. Meaning, once you've dyno tuned your car on the WIDE LAMBDA O2, then you can use your Air Fuel guage, and EGT as <b>REFERENCE</b>, once you know the car is dialed in right.

NEVER THE OTHER WAY around...ie/ you cant start messing with boost and fuel and try to tune your car with a $80 air/fuel guage, or $200 EGT...thinking your safe according to what the guage says.

I think the guages only become useful after you've spent the money to get the car tuned with the wide lambda 02 plain and simple.