kenshin

Hi,

I have a two-gauge A-pillar pod but I currently only have a boost gauge. I can't decide what other gauge to get simply because I don't know what the other gauges do.

Can someone explain what these gauges are for and its benefit? I know an EGT gauge measures Exhaust Gas Temperature, but why do I want to know the EGT??

1. E.G.T. GAUGE
2. OIL PRESS. GAUGE
3. TEMP. GAUGE (oil or water)
4. FUEL PRESS. GAUGE

Thanks

areet

iTrader: (1)

So you know if you're engines running so hot everything on the exaust side of the engine is going to melt or not. Is an indicator of a/f, as the temperature ranges from hot to cold from being lean/rich

We don't have an oil pressure gauge, its good to know the engine's actually pumping oil, good indicator if somethings about to go wrong

So you know how hot your engines running, not just a little scale between completely cold, and too hot.

As you start modding and using up more injector duty cycle, the stock pump won't be able to handle it, good indicator if somethings about to go very wrong.

1QWKEVO

iTrader: (3)

only guages you really need are A/F, Boost, and EGT

A/F is air:fuel ratio= lets u know if your motor is starving for gas or running too much gas under load.

Boost= well you should know already...

EGT is Exhaust gas temp= basicly lets you know a few things lets u know if your running too lean, also can help to let you know if your detinating, becasue cylinder temps will rise slightly with detination...

If your mildly modding your evo jsut run a boost and A/F gauge... if you start getting in to turbo swaps and cam stuff then your going to want a EGT gauge becasue mostlikely your going to max out your setup.

Buckkaaaa!!

iTrader: (2)

personally I would go w/ a boost gauge and an EGT gauge first.... A/F narrowband is pretty useless compared to the EGT in terms of tuning ability. A wideband A/F on the other hand is a great tool to have!

alex_alex

iTrader: (7)

the Air Fuel gauge does absolutely nothing for you, b/c it reads narrowband. Getting one will allow you to do . . . absolutely nothing. The EGT on the otherhand, is a much better tool for diagnosing problems.

Kayaalp

iTrader: (1)

An EGT gauge is basically used as a poor-man's air-fuel gauge. To get an accurate air-fuel rading, you need a wide-band O2 sensor, which can run over $1000. And narrow-band O2 sensors are basically useless. But the EGT gives you a good idea if your air-fuel ratio is good. Too hot, and you're running lean.

Fuel pressure gauges are pretty useless unless you start really increasing your boost. If the fuel injectors run out of steam, your engine will lean out. But our engines are tuned to run so rich, that this will never be an issue.

So, neither of the above are helpfuil unless you start increasing your boost.

Oil temp is very important...more so than people seem to think. You really don't want to be on-boost until your engine is fully warmed up. People rely on their stock water temp gauge, but that's really not very helpful since the coolant will heat up much quicker than the oil will. Until the oil is hot, you're not really at operating temp and should lay off the boost.

Oil pressure is very important to people who track their cars. When your car is under high lateral loads, you may have problems with the oil pickup as the oil sloshes around in the sump. Oil starvation can kill your engine pretty quickly, so monitoring the pressure is important.

Emre

marksae

iTrader: (12)

EGTs are also affected by timing. When the ECU retards timing, your EGTs skyrocket. This is a good indicator that your ECU is pulling timing due to knock. I wouldn't tune w/ an EGT gauge though. I'd just use it as a warning.

Buckkaaaa!!

iTrader: (2)

widebands are getting pretty affordable these days..... I'm saving up for one myself!
Check out: http://www.plxdevices.com/

alex_alex

iTrader: (7)

Buckkaaaa, be careful with the widebands.

The sensors will burn out in no time if youre constantly running the gauge.

kenshin

Do I need an aftermarket exhaust to use an EGT gauge?

kenshin

One more question about gauges....

For gauge sizes (52mm vs 60mm), do you measure the front face or the cylinder diameter?

Thanks.

marksae

iTrader: (12)

Cylinder diameter. And you can use an EGT gauge w/ a stock or aftermarket exhaust.