Evil Aviator

Yes, additional gauges are pretty much worthless on a daily driver. However, you could get a water temp gauge and narrowband AFR gauge if you want to monitor the engine for general health.

SPA Technique
The previous generation dual gauge manual states accuracy as follows:
Pressure +/-1psi over a 1-200psi range
Temperature +/-1degC at 25degC
Voltage +/-0.1v between 9-16v
http://www.spatechnique.com/

Gauge readings are great for tuning but you want warning lights or buzzers for actual driving. I would not consider any aftermarket gauge set that does not have some type of user-defined warning. Fortunately, more and more brands are offering this function on their electrical gauges. I see that even Auto Meter now has shift-mad-quick-yo Nexus ricer gauges that are programmable.

Aircraft turbine engines are adjusted by EGT rather than AFR, so it is possible to get good response times from EGT. The type of EGT probe makes a lot of difference in response time. A good K-type thermocouple has a response time of about 300-750 milliseconds. A thermocouple with a thick sheath can have a response time as slow as 4-7 seconds. If you still have your Greddy gauge, see if one of these better probes will fit:
http://www.exhaustgas.com/ProductDet...sketID=&RepID=

For those of you considering an EGT gauge, make sure you get one that reads at least 1700degF.

The people who made fun of you are the noobs and wanna-be tuners who do not realize that a narrowband AFR gauge is useful if you know what you are doing. I guess the problem is that over 99% of the people on this forum do not know what they are doing. However, there is nothing wrong with this, as I believe that novice tuners are much better off with a wideband AFR gauge anyway. Besides, a wideband AFR gauge doesn't hurt anything but the wallet, although I find it unfortunate that the sellers of these items attempt to con people into believing that their product can replace knowledge and experience.

A 'wideband' refers to a fancy air-fuel ratio (AFR) gauge. A wideband sensor is fairly accurate between the air-fuel ratios of 10:1 and 20:1 (car engines usually operate in the 12:1 to 16:1 range). A narrowband sensor is only accurate at the stoich air-fuel ratio (about 14.7:1) and accuracy decreases above and below this value.

HOZZMANRX7

iTrader: (43)

"For those of you considering an EGT gauge, make sure you get one that reads at least 1700degF"

Or to 1000degC.

TitaniumTT

Nope, sold the gauge a long time ago. It was on the quicker side of that 3-7 seconds but still stupidly slow to respond.

Now I'm running a k-type thermocoupler with a Motec Termocoupler Amp wired strait to the M820 so I can log EGT's. It keeps throwing an error though so sadly I need to get a second probe and see if that rectifies the problem or not so I'll definately be buying from them as opposed to the first pace. Thanks for the link.