Are the MR Gauges Accurate? Do they generally read high, low, or on the money?
I mostly want to confirm the Boost Gauge accuracy. Has anyone done a comparison test of any sort?

 

I run 2, seems accurate to me

 

throw your car on a dyno have them log boost and see then. That the only way your going to get your answer

 

its dead on accurate i do believe

 

Yeah Thanks I could've told you that, has anyone tested them on a dyno?

 

Mine was accurate at sea level as expected.

 

with the engine off mine sits a little below 0. when it should be at 0. i have a 05

 

mine was pretty close to the autometer which was about 1psi lower than the dyno. of course I peg the stock gauge.

SQ

 

Based on my experience dynoing the car in various dynos and meassuring the boost with the dyno test probes and also with my additional Defi BF imperial electronic gauge I find the MR gauges accurate.

Also the voltmeter is accuarte, I verified it with an APEI turbo timer which comes with a built in digital voltmeter.

Definately yes, accurate.

Carlos

 

I've done boost logging in EvoScan using the JDM Evo 9 MAP sensor. My observation of the MR boost gauge during the logging runs compares well with my boost data from the logs. So, I'd say its accurate to within 1 psi. I don't think the oil temperature measurement system is terribly accurate though. I don't think its the temperature gauge so much as it is the crappy location of the oil temperature sensor. Don't know about the voltage.

 

I don't think its the temperature gauge so much as it is the crappy location of the oil temperature sensor. Don't know about the voltage.[/quote]

Uhmm... I am curious, where do you think is a good place to put the sensor then? Having the sensor on the botton of the oil pan is a location in which the oil is undisturbed.

Carlos

 

its all relative for the most part anyway, its just a tool used for tuning and monitoring...

 

The problem is that the sensor is not in intimate contact with the oil. The sensor itself sits loose inside the drain plug. Makes for a poor thermal path between the oil and the sensor. Pulling the pan and welding in a bung for a thread-in sensor would go a long ways towards more accurate oil temperature measurement.

 

Using a sandwich oil cooler adapter with a temperature sensor port would be another option.

 

I'll probably end up sticking with my stock gauges then. I'm not too worried about the oil temp being as accurate as the boost gauge. I usually wait until the oil temp gets to about 70 degrees celcius before I boost or go WOT.