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Jim_PA · 08-18-2009, 10:37 AM

I am using a JAW 1.041 -- You have to build it yourself, or you can find them assembled for usually an extra $50 or $60. You literally get all the pieces plus a blank circuit board. If you've ever soldered anything, this isn't that hard to do. I thought it was kind of fun, but I'm a nerd.

They now offer it for $125 which includes an o2 sensor and display. I believe you still have to get your own project box ($4-$5 bucks from radio shack).

The best thing about the unit is that it takes input from other sensors (RPM, exhaust gas temp, etc...). Then when you log your run, you can see RPM vs AFR. I have never logged my data to a PC, I just drive around and watch the LED display.

You won't find the same features anywhere for this cost. Most units that take RPM or other input cost $400+.

This has saved me so much time in tuning, it's not even funny. It takes all the guess work out of it, and you can see what your carb is doing in every area.

http://14point7.com/Widebands/JAW_1_041/JAW_1_041.htm

I bought a stainless o2 sensor bung and plug for $5 on ebay.

08-18-2009, 10:37 AM	#47
Jim_PA Registered User Join Date: May 2005 Location: PA Posts: 2,696	Re: MPG for a 402 I am using a JAW 1.041 -- You have to build it yourself, or you can find them assembled for usually an extra $50 or $60. You literally get all the pieces plus a blank circuit board. If you've ever soldered anything, this isn't that hard to do. I thought it was kind of fun, but I'm a nerd. They now offer it for $125 which includes an o2 sensor and display. I believe you still have to get your own project box ($4-$5 bucks from radio shack). The best thing about the unit is that it takes input from other sensors (RPM, exhaust gas temp, etc...). Then when you log your run, you can see RPM vs AFR. I have never logged my data to a PC, I just drive around and watch the LED display. You won't find the same features anywhere for this cost. Most units that take RPM or other input cost $400+. This has saved me so much time in tuning, it's not even funny. It takes all the guess work out of it, and you can see what your carb is doing in every area. http://14point7.com/Widebands/JAW_1_041/JAW_1_041.htm I bought a stainless o2 sensor bung and plug for $5 on ebay. Last edited by Jim_PA; 08-18-2009 at 10:39 AM.