Average Reviews:
(More customer reviews)First, Amazon's product description was a bust. They advertised it as a fuel pressure gage with a black face. What you see is what was sent--a white faced dual air/fuel ratio gage.
The Technical side:
1. Equus' telephone technical support was marginal at best. The representative did not sound confident in subject knowledge nor information he presented. Bottom line is don't expect any "technical" assistance from Equus.
2. The gage and led display is excellent and easy to wire/install. No hidden problems there and the leds are bright/easy to see and the display responds to O2 inputs rapidly and without lag.
3. The product instructions completely lack beneficial presentation interpretation. That is, what does the information presented on the gage really mean? Depending on the engine; the type of O2 sensors; the installed location of the O2 sensors; and whether the engine is injected or carburated, all result in different gage presentation personalities. For instance on my application, the gage presents "optimal" readings when at cruise settings, but the entire display completely disappears when full (carburated) throttle is selected. I have yet to be able to determine if this is a normal gage response or O2 sensor limitations. The engine runs fine/strong at full throttle with all the indications of proper fuel/air mixture, so why does the gage go totally blank? It would be nice if Equus' Technical Support could offer the answer, but that limitation has already been identified.
Bottom line is that this is a very nice "gee-whiz gadget" gage, but I can't recommend it as a realistic tuning tool until the reason for going totally blank at full throttle can be corrected.
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