Want to install Air-Fuel Gauge Options

[michael7810]

I have to get larger chokes and re-jet my 1911cc/dual IDF40s and was thinking of installing a wideband air-fuel gauge to help with tuning. I've looked at a few digital gauges for around $200 that include the gauge, O2 sensor, bung, wiring, etc. Wondering if you guys have any sourcing recommendations and install tips. It looks simple from what I've read. Thanks for any help you can provide.

[mrbubblehead]

this is the one i would get. http://www.summitracing.com/search/Brand/I...s/?autoview=SKU its the only digital one on the market i believe. mine is the older innovate gauge. its analog, but still works great. haveing a wideband is an invaluable tool for tuning.

[ChrisFoley]

this is the one i would get. http://www.summitracing.com/search/Brand/I...s/?autoview=SKU its the only digital one on the market i believe. mine is the older innovate gauge. its analog, but still works great. haveing a wideband is an invaluable tool for tuning.

A little late to the party but the digital wideband gauge I sell is not made by Innovate.
After my experience with the Innovate LM-2 I avoid anything made by them.

[Series9]

A little late to the party but the digital wideband gauge I sell is not made by Innovate.
After my experience with the Innovate LM-2 I avoid anything made by them.

Chris, could you expand on this?





As for me, I have some recent experience with PLX Devices modules and was happy with the results.

[ChrisFoley]

Chris, could you expand on this?

I bought the LM-2 because we needed a wideband setup which could be installed in a car with no O2 fitting in the exhaust. The popular LM-1 had been recently discontinued and the LM-2 was being promoted as the replacement. Ok, for the increased price we got two sensors and a nice data logger with rpm recording.
The rpm feature was just about totally useless - it didn't work with most ignitions - and Innovate's first answer was to tell everyone to purchase another one of their devices which could read a raw signal from a coil and turn the signal into something the LM-2 could understand. In spite of numerous complaints on their technical forums, their next best answer was a vaguely outlined signal conditioning device one could make from pieces purchased at Radio Shack. (the circuit included a 0-10,000 ohm, 10 turn pot.)
We built the signal conditioner and tested the LM-2 on a variety of 914s with various ignitions. We tried numerous times to apply their (Innovate techies) "expertise" so we could drive a car and record O2 and rpm for tuning purposes. I think we were able to obtain useful rpm data from one of the systems we tested on. I sure as hell wasn't going to spend another $200 on one of their other devices after spending $500 on something marketed as a complete product, which didn't work as promised.
At one point we flashed the LM-2 with updated firmware which was touted as their final solution to the problem - but that didn't work either.

There was another problem too. The clamp which held the O2 sensor in the tailpipe wasn't very secure and once it came out while we were driving & monitoring AFR. The sensor and clamp dragged on the ground, the cable caught a wheel, and the assembly swung up and dented the customer's fender.
Innovate can go to hell as far as I'm concerned.