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I have some check engine codes
The "2" sensor on both banks is the downstream O2 sensor which checks catalyst efficiency. Since you have added "high-flow" cats along with the added heat loss to the cats from the Belangers, I would venture a guess that they are not operating to the specs of the OEM cats. Therefore, the light...- Dyno Dave
- Post #5
- Forum: SRT10 and SRT10 Coupe Discussions
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Hmmm.......What is YOUR story with your username?????
I'm looking at a Viper engine through a glass window everyday at work with the exhaust system glowing orange.- Dyno Dave
- Post #116
- Forum: RT/10 and GTS Discussions
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What doe you guys/ gals think of this Wideband O2 kit? Looks nice!
Typically they read richer than the emission bench. They do vary by up to a half a ratio and no, they are not consistent. We calibrate them daily. The emission bench is calibrated with tanks of pure medical grade gases. We've looked at the newer cheap wide range sensors but found their signal...- Dyno Dave
- Post #29
- Forum: RT/10 and GTS Discussions
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What doe you guys/ gals think of this Wideband O2 kit? Looks nice!
Knowing that I have to run linear regression against an extremely expensive emission analysis bench on either side of stoichiometric to get the expensive wide-bands to read correctly, I gotta ask....how do you know it is extremely accurate? What equipment was it measured against to verify it's...- Dyno Dave
- Post #25
- Forum: RT/10 and GTS Discussions
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Mopar GTS-R race intake manifold
I've worked with this setup and it has no driveability. If you look at the amount of throttle cross-sectional area that is exposed with even the most delicate push of the accelerator pedal you will see that there is a huge change in area. This results in very abrupt power delivery and it's...- Dyno Dave
- Post #13
- Forum: Performance Modifications
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93 Octane?
It is calibrated to run on 91 for those unfortunate souls dealing with California fuel quality.- Dyno Dave
- Post #13
- Forum: SRT10 and SRT10 Coupe Discussions
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Does computer automatically compensate for injector degradation?
The pcm will adapt those areas of the map that operate in closed-loop only. The open loop areas will not. If the shape of the volumetric efficiency curve changes due to hardware modifications there will be some areas that are rich and some that are lean. This will occur even within the closed...- Dyno Dave
- Post #9
- Forum: RT/10 and GTS Discussions
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Does computer automatically compensate for injector degradation?
The US06 portion of the EPA/CARB tests require the engine to run stoichiometric air/fuel ratios (closed-loop) at all times with the exception of those areas of the engine map where engine component/catalyst temperatures exceed their operating limits (open-loop) and then no richer then LBT +6%...- Dyno Dave
- Post #7
- Forum: RT/10 and GTS Discussions
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SRT-10 top speed electronically limited?
No.- Dyno Dave
- Post #13
- Forum: SRT10 and SRT10 Coupe Discussions
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SRT 10s DYNO Charts
A water injection system might work but I'm sure the Feds would not consider that because the water tank could run dry without user intervention and no guarantee could be made that the cats would last 100k miles. Upgrades in materials could help push temperature limits such as the ceramic...- Dyno Dave
- Post #28
- Forum: SRT10 and SRT10 Coupe Discussions
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SRT 10s DYNO Charts
I see the issue as the ability of a large catalyst that could take the high exhaust flows of a large displacement engine would have too much mass to light off quickly. These days the largest portion of emissions occurs in the first 30 seconds the engine runs. After that you're home free. The...- Dyno Dave
- Post #26
- Forum: SRT10 and SRT10 Coupe Discussions
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SRT 10s DYNO Charts
This is not an unusual practice. It is done industry wide.- Dyno Dave
- Post #24
- Forum: SRT10 and SRT10 Coupe Discussions
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SRT 10s DYNO Charts
It's that rich to cool the catalysts. It would make more power if leaned out but the cats would fail if run at high loads for an extended period and we all know the EPA and CARB wouldn't like that.- Dyno Dave
- Post #22
- Forum: SRT10 and SRT10 Coupe Discussions
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2001-2002 Aluminum Flywheel MISS Fire code ??
Ding, ding, ding, ding............. We have a WINNER on the misfire detection/lightened flywheel quiz. DynoDave- Dyno Dave
- Post #14
- Forum: Performance Modifications
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Who Has A Heated Garage/How to...?
I have a 1000 sq ft detached garage with 12 foot ceiling and use a natural gas overhead infrared radiant tube heater. It heats the objects, not the air and is very efficient. I bought it used from Home Quarters for $600 when they went out of business.- Dyno Dave
- Post #25
- Forum: RT/10 and GTS Discussions
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Paint or coating for garage floor
I have had the Rustoleum 2-part epoxy for garage floors from Home Depot for 1-1/2 years on my floor and it has held up extremely well. I've since painted my shop floor, my in-laws garage and my brother-in-laws garage. My boss painted his garage floor with it. All of us like the finish, it's...- Dyno Dave
- Post #2
- Forum: General Viper Discussion
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Viper vs. F16 on Ripleys Believe it or not
The driver was Herb Helbig.- Dyno Dave
- Post #4
- Forum: RT/10 and GTS Discussions
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What are wide band O2's used for?
Re: What are wide band O2\'s used for? I'll elaborate somewhat: The std O2's have no real fuel/air resolution. They simply switch or toggle back and forth depending on whether the exhaust gas is lean or rich. How much it is lean or rich is not a factor. Under steady state conditions it...- Dyno Dave
- Post #5
- Forum: RT/10 and GTS Discussions
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What are wide band O2's used for?
Re: What are wide band O2\'s used for? It is one of the tools I use every day at DCX for calibrating the Viper development engines.- Dyno Dave
- Post #3
- Forum: RT/10 and GTS Discussions
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Skip Shift Explanation, Please
It is for the EPA driving cycle. The faster that big V-10 spins the more air and fuel get pumped through it causing a hit on the hydrocarbons. It's got more than enough torque so it can handle the driving cycle in 4th and turn more slowly and pump out less HC.- Dyno Dave
- Post #3
- Forum: General Viper Discussion
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10 throttle bodies... Cool? or Junk?
Re: Miles B The problem with hooking the map sensor to one port is the cyclic nature of the port flow. Each time the intake valve closes a pressure wave is reflected back up the runner. So the pressure measured would tend to be like a sine wave. A manifold with a plenum volume sufficient in...- Dyno Dave
- Post #38
- Forum: RT/10 and GTS Discussions
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10 throttle bodies... Cool? or Junk?
Re: Miles B SRT-10 Carbon is TPS/RPM. Map sensor just reads barometer.- Dyno Dave
- Post #36
- Forum: RT/10 and GTS Discussions
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Bog between 1st and 2nd gear
It takes a long time to get the fix in place because the changes must be submitted to the EPA/CARB for approval before it can be released.- Dyno Dave
- Post #97
- Forum: SRT10 and SRT10 Coupe Discussions
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Computer Updating After Mods
The MP ECU P5007721 should work perfectly with your mods.- Dyno Dave
- Post #2
- Forum: RT/10 and GTS Discussions
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10 throttle bodies... Cool? or Junk?
The SRT-10 Carbon is using the GTSR t/body setup. The thing is a pain-in-the---- to calibrate and get running decently. The runner lengths are too short for a street car and low-end to mid-range torque is compromised. But the SRT-10 has plenty to trade off. By the way, you can run an engine on...- Dyno Dave
- Post #28
- Forum: RT/10 and GTS Discussions
