SD and Dry nitrous
Originally Posted by Spenser309
I haven't seen a good thread about this. Will a SD vehicle autocorrect for the addition of a dry nitrous shot? as in will the MAP pick it up.
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From: Coppell,TX
i was thinking have the 12v to the solenoid connected to the EIO on HPTuners and then HPTuners can adjust once it sees 12v across the Input circuit. Then again i dont own HPtuners or a nitrous system. lol.
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I have been researching this. Here is what I am looking at:
Dry nitrous runs increase the g/cyl airflow requirement beyond 95% of the users on here can achieve NA (typically .76g @ WOT), with a small 100+ shot I see around 1.05g. So, I am thinking to make the fueling and spark after .76 for nitrous, since once the juice flows the car will exceed the .76 barrier very quickly there wont be but a fraction of a second delay between pre.76 and post. Of oucrse I havent tested this yet, but since I have a spare engine here, I might. Once I swap Operating Systems (OS) to a 2002, then I can also add in the afr and spark vs. IAT, for now the 2000 OS doesnt allow that. If I can get the IAT to respond, get it into the airflow far enough, then there shouldnt be a problem.
On the other hand, I may install an IAT Sensor kill switch, once flipped the PCM will only see -38* constant, so I could use the '02 OS to tune that way also, piggybacking the IAT Kill into the solenoid power wire, in an interrupter fashion.
How does that sound?
Dry nitrous runs increase the g/cyl airflow requirement beyond 95% of the users on here can achieve NA (typically .76g @ WOT), with a small 100+ shot I see around 1.05g. So, I am thinking to make the fueling and spark after .76 for nitrous, since once the juice flows the car will exceed the .76 barrier very quickly there wont be but a fraction of a second delay between pre.76 and post. Of oucrse I havent tested this yet, but since I have a spare engine here, I might. Once I swap Operating Systems (OS) to a 2002, then I can also add in the afr and spark vs. IAT, for now the 2000 OS doesnt allow that. If I can get the IAT to respond, get it into the airflow far enough, then there shouldnt be a problem.
On the other hand, I may install an IAT Sensor kill switch, once flipped the PCM will only see -38* constant, so I could use the '02 OS to tune that way also, piggybacking the IAT Kill into the solenoid power wire, in an interrupter fashion.
How does that sound?
Originally Posted by CAT3
I have been researching this. Here is what I am looking at:
Dry nitrous runs increase the g/cyl airflow requirement beyond 95% of the users on here can achieve NA (typically .76g @ WOT), with a small 100+ shot I see around 1.05g. So, I am thinking to make the fueling and spark after .76 for nitrous, since once the juice flows the car will exceed the .76 barrier very quickly there wont be but a fraction of a second delay between pre.76 and post. Of oucrse I havent tested this yet, but since I have a spare engine here, I might. Once I swap Operating Systems (OS) to a 2002, then I can also add in the afr and spark vs. IAT, for now the 2000 OS doesnt allow that. If I can get the IAT to respond, get it into the airflow far enough, then there shouldnt be a problem.
On the other hand, I may install an IAT Sensor kill switch, once flipped the PCM will only see -38* constant, so I could use the '02 OS to tune that way also, piggybacking the IAT Kill into the solenoid power wire, in an interrupter fashion.
How does that sound?
Dry nitrous runs increase the g/cyl airflow requirement beyond 95% of the users on here can achieve NA (typically .76g @ WOT), with a small 100+ shot I see around 1.05g. So, I am thinking to make the fueling and spark after .76 for nitrous, since once the juice flows the car will exceed the .76 barrier very quickly there wont be but a fraction of a second delay between pre.76 and post. Of oucrse I havent tested this yet, but since I have a spare engine here, I might. Once I swap Operating Systems (OS) to a 2002, then I can also add in the afr and spark vs. IAT, for now the 2000 OS doesnt allow that. If I can get the IAT to respond, get it into the airflow far enough, then there shouldnt be a problem.
On the other hand, I may install an IAT Sensor kill switch, once flipped the PCM will only see -38* constant, so I could use the '02 OS to tune that way also, piggybacking the IAT Kill into the solenoid power wire, in an interrupter fashion.
How does that sound?
Robert
Originally Posted by Robert56
Hurry up and get to work.
Robert
Robert
Its not like I am waiting for someone else to crack this peanut, but I have lots of little **** to take care of first.... now that my Harlan Shift light is in, yes I am an Auto, but a RMVB TH350 non-auto, I may be picking up my research again. I'll have to post up some pics of everything soon.
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From: Coppell,TX
im weird though i dont like wet systems. Dry is cheaper, easier to hide, smoother, doesnt just dump fuel like a carb, easier to put together, safer because its not flammable in your intake, and just seems to fit efi alot better. Iono thats all the reasons i got. stepping off the podium now.
Spenser, your point on safer has been beat to death, I personally understand your stance, yet, either system has its pro & con. I like the extra torque of wet, but the ease of dry (fewer jets too ). Oh well, I'll get cracking on this next week hopefully.
). Oh well, I'll get cracking on this next week hopefully.
Originally Posted by CAT3
Spenser, your point on safer has been beat to death, I personally understand your stance, yet, either system has its pro & con. I like the extra torque of wet, but the ease of dry (fewer jets too ). Oh well, I'll get cracking on this next week hopefully.
). Oh well, I'll get cracking on this next week hopefully.Also, with this new AIT vs fuel adder, the torque difference may be a thing of the past. tnt gets more torque by basically running richer, ah ha, we have a way of doing this with out effecting n/a tune, I believe. more to come on this in near future. Am working with someone on a custom dry kit and later custom tune to go with. You'll hear about it soon.
Robert
Robert, already mentioned and covered that part, but it was kind of incognito, until you just spelled it out I have messed with and had positive results with the IAT vs AFR and Timing. But, I need to convert to a Z06 style maf, I happen to have a PACE one, but its definately not even remotely calibrated for my car. The Z06 MAF has built in IAT, which is convenient for tuning that way. However, true SD I will remove the MAF and mount the IAT sensor in the neck to more accurately read the temp, if possible.
I have messed with and had positive results with the IAT vs AFR and Timing. But, I need to convert to a Z06 style maf, I happen to have a PACE one, but its definately not even remotely calibrated for my car. The Z06 MAF has built in IAT, which is convenient for tuning that way. However, true SD I will remove the MAF and mount the IAT sensor in the neck to more accurately read the temp, if possible. Thread Starter
TECH Enthusiast
Joined: Nov 2004
Posts: 600
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From: Coppell,TX
wet shots just seem like they need a carb to me. dry is for efi. tuning is needed and the maf needs to go away but it just fits so much better than a wet shot.
pros of wet
easy to get 100hp and above shots
cheaper for over 100hp shots
no new injectors
dont absolutely need a tune.
wont max out the maf.
pros of dry
easy for under 100hp shots
cheaper for under 100hp shots
better metering over 100hp shots
safer intake situation
simpler
produces a better curve
endless tuning possibilities. (window switch, WOT switch, sense a stuck noid, afr switch,fp switch)
best option for a full out application.
Iono this is the limited knowledge of an 18 yd who reads more than he buys.
pros of wet
easy to get 100hp and above shots
cheaper for over 100hp shots
no new injectors
dont absolutely need a tune.
wont max out the maf.
pros of dry
easy for under 100hp shots
cheaper for under 100hp shots
better metering over 100hp shots
safer intake situation
simpler
produces a better curve
endless tuning possibilities. (window switch, WOT switch, sense a stuck noid, afr switch,fp switch)
best option for a full out application.
Iono this is the limited knowledge of an 18 yd who reads more than he buys.
