Welcome DynoJet Research!

We would like to welcome DynoJet Research as our newest supporting vendor!

Please take a moment to visit their site: http://www.dynojet.com

Welcome to the site.

Welcome to the RBC

Welcome to the club..:wavey:

Welcome and thanks for your supprt

Thanks guys. Look for some special pricing on our WideBand 2 O2 kits for SRT10forum members soon!

Wow,they really are here........finally.:wavey:

Hello Again and thank you in advance for the specials you will be offering.

I have a few questions after watching the video on the new Wide Band 2 sensor. You show several times during the video where the A/F ratio exceeds 15 to 1.

Your gauges show optimum performance beginning at A/F of 12.5-13 to 1. It is my understanding that this is starting to get into the “Danger Zone” for our trucks. Are you planning to produce a special line of gauges for our trucks?

Knowing that the Viper V10 will not tolerate ANY detonation, What A/F ratio do you recommend for Optimum Performance with the Ram SRT-10 truck?

As a vendor I would be very interested in knowing what you recommend.

Respects,
Da1Chief

The optimum stoich(stoichiometric) rate is 14.7.I wouldn`t run any thing over 12.7 @ WOT on our trucks.

That was the point of my question. With these engines, it seems that their gauges would be out of calibration and could cause someone to loose a motor. That would be a really bad thing.... :(

I have a few questions after watching the video on the new Wide Band 2 sensor. You show several times during the video where the A/F ratio exceeds 15 to 1.

Your gauges show optimum performance beginning at A/F of 12.5-13 to 1. It is my understanding that this is starting to get into the “Danger Zone” for our trucks. Are you planning to produce a special line of gauges for our trucks?

Knowing that the Viper V10 will not tolerate ANY detonation, What A/F ratio do you recommend for Optimum Performance with the Ram SRT-10 truck?

As a vendor I would be very interested in knowing what you recommend.

Respects,
Da1Chief

Hello Da1Chief and thanks for the welcome. As mentioned above, the stoichiometric ratio for gasoline is 14.7:1 air/fuel ratio (14.7 parts air to 1 part fuel). The stoichiometric point for gasoline is the ratio at which the equation is balanced - meaning complete combustion. An a/f ratio of 14.7 is typical in modern cars at idle or VERY light throttle cruise. This is also sometimes referred to as a Lambda value of 1.00. A Lambda sensor, which is what an O2 sensor is, will output a value of 1.00 at the stoichiometric point.

In the videos (and on the cars/trucks) it is common to see the a/f ratio go leaner than 14.7:1 during deceleration where some vehicles turn the injectors off (since no power is needed), which basically turns the engine into an air pump. At this point, the exhaust coming out of the engine is more fresh air than combustion byproduct.

Typical target a/f ratios for power in a naturally aspirated 4-stroke engine are .87-.88 Lambda (12.7-13.0:1 a/f for gasoline), which is why that is shown on the gauges as optimum. Typical target a/f ratios for power in a forced induction 4-stroke engine are .78-.80 Lambda (11.5-11.7 a/f for gasoline). This will show in the "rich" zone on our gauge, but nonetheless, that's the target. The gauge face was designed with naturally aspirated engines in mind.

Thank you for your explanation and I appreciate the time you took to answer my questions.

Respects,
Da1Chief