nitros on a raptor

[The Car Stereo Company]

the dry system has to fill the airbox and your o2 sensor. there is a delay from when you push the button until your o2 sensor is bombarded by the gas. at which point it adds more fuel. the time it takes to fill the area requires more time than the wet system. since the wet system mixes nos with fuel, the possibility of a puddle forming in the manifold arises. get a backfire in there and your motor is done. but the moment it leaves the fuel rail and is in the injector its ready to go. its also nice to have direct ports. cant do that with a dry system. it is definitely a quicker response. i run 1200psi in the bottles on the bike with an 80shot jetting. the timing has be retarded 2 degrees and my power commander can be adjusted on the fly. when i ran the wet system it definitely came quicker than my current dry system. most drag racers run a wet system, but i opted for the dry after having too many issues with the wet.

 

[Rockafella]

the dry system has to fill the airbox and your o2 sensor. there is a delay from when you push the button until your o2 sensor is bombarded by the gas. at which point it adds more fuel. the time it takes to fill the area requires more time than the wet system. since the wet system mixes nos with fuel, the possibility of a puddle forming in the manifold arises. get a backfire in there and your motor is done. but the moment it leaves the fuel rail and is in the injector its ready to go. its also nice to have direct ports. cant do that with a dry system. it is definitely a quicker response. i run 1200psi in the bottles on the bike with an 80shot jetting. the timing has be retarded 2 degrees and my power commander can be adjusted on the fly. when i ran the wet system it definitely came quicker than my current dry system. most drag racers run a wet system, but i opted for the dry after having too many issues with the wet.

I repeat, if you're waiting for your O2's to compensate for a dry shot, then you're doing more damage than anything else as your cylinders are already extremely lean. Lean is bad, point blank period. No if's and's or but's about it. Most dry systems on today's vehicles spray across the MAF and that along w/ your IAT sensor will compensate w/ more fuel and less timing. Of course, extra tuning is needed to make running a dry shot the safest it can be.

Secondly, if a wet system causes any puddling in the intake and you do happen to get a back fire - your intake is done - not your engine. Most vehicles nowadays have plastic intakes and yeah, it's a good chance it'll need to be replaced. The engine on the other hand will more than likely be fine.

I'll assume that you're talking about your bike - which obviously means that spraying in one gear and not "feeling" it until the next gear isn't nearly the delay as if you were referring to a car or truck in that same scenario, but you may wanna throw that thing on the dyno and log a few nitrous runs to verify that everything's okay as you're waiting for your O2's to compensate for lean cylinder conditions...

one last question - you keep saying that most drag racers run wet systems which leads me to ask (and not trying to be a smart ass so forgive me) - who runs dry systems??

ps - you can run dry direct port systems...

 

[2004boss]

All you need is a window switch to prevent a nitrous backfire. Don't let it spray until 3000^ rpm and it'll be fine. In ten years of spraying my mustang I've had one nitrous backfire. Blew the plastic intake. Engine was fine.
I think the 6.2 could handle a 200 wet shot all day. The iffy thing is the throttle body. Since it doesn't open all the way and it has a mind of its own it could cause an issue. I wonder if the NOSzle injectors would fit. That would be a bad ass setup

Sent from my SCH-I535 using Tapatalk

 

[mudblood]

Seen the intake blow right off the motor on both wet and dry. Really, putting nitrous on a Rapter is like doing a BOOB JOB ON A 90 YEAR OLD WOMAN....................WHY!

 

[mouldman1]

everything i never wanted to know about nitrous all in one thread.

 

[Rockafella]

All you need is a window switch to prevent a nitrous backfire. Don't let it spray until 3000^ rpm and it'll be fine. In ten years of spraying my mustang I've had one nitrous backfire. Blew the plastic intake. Engine was fine.
I think the 6.2 could handle a 200 wet shot all day. The iffy thing is the throttle body. Since it doesn't open all the way and it has a mind of its own it could cause an issue. I wonder if the NOSzle injectors would fit. That would be a bad ass setup

Sent from my SCH-I535 using Tapatalk

Everything above is dead on except for maybe the 200 shot... It might take it, it might not... I wouldn't go above a 100 shot if it were me and I'd probably set the window switch, as previously stated, to come in no earlier than 3200. All of the torque seen in a mustang at 3k gets things moving. All of that torque on a raptor at 3k is really just putting a lot of strain on the bottom end to get this lead sled moving. But yeah, 2004boss is obviously a veteran of nitrous usage in vehicles and he and I have had much of the same experiences w/ it...

Seen the intake blow right off the motor on both wet and dry. Really, putting nitrous on a Rapter is like doing a BOOB JOB ON A 90 YEAR OLD WOMAN....................WHY!

Again, true statements. A bog, a bent intake valve, etc..., can cause a nitrous backfire regardless of if you're using a wet or dry system. Obviously backfires are more common in wet systems as most modern intakes on fuel injected cars aren't designed for fuel to flow throw them (it's usually fine but some intakes are more prone to puddling than others)...

Again, technology has provided the end user w/ plenty of safety features that can make nitrous extremely safe. There's window switches which control the RPM window that you're actually spraying in, there's fuel pressure safety switches to ensure that you aren't spraying nitrous w/o proper fuel introduction (remember lean equals very very bad), there's all types of electronics to retard timing via a signal at the same time that signal opens the nitrous solenoids, etc...

And I love the 90 year old woman analogy and would have to agree completely - No need to put nitrous on a Raptor. Not unless you and you're buddies routinely drag race across plowed fields; which would be awesome and I envy you

 

[The Car Stereo Company]

yes, i am talking about bikes. most drag bikes use a wet system. i did for years. but in the end, i switched to the dry system. the delay im talking about is about .6 -.7 seconds as best as i can tell. once im at 55 mph i hit my switch and when i shift into second at 85mph i have a full box of nos and im shifting immediately into 3rd. bike has been dynod a bunch and there were never any issues. however since the wife stopped her annual 2 trips to japan, i dont get to go to the strip anymore. never ran nos in a car so what i know about nos may not be correct for a vehicle. im just stating what i have seen and used in the bike world.

 

[Rockafella]

yes, i am talking about bikes. most drag bikes use a wet system. i did for years. but in the end, i switched to the dry system. the delay im talking about is about .6 -.7 seconds as best as i can tell. once im at 55 mph i hit my switch and when i shift into second at 85mph i have a full box of nos and im shifting immediately into 3rd. bike has been dynod a bunch and there were never any issues. however since the wife stopped her annual 2 trips to japan, i dont get to go to the strip anymore. never ran nos in a car so what i know about nos may not be correct for a vehicle. im just stating what i have seen and used in the bike world.

Trust me, even w/ the large air boxes seen on modern bikes, especially w/ the integrated ram air seen on most bikes now a days, as soon as your nitrous solenoid opens, your cylinders are instantly engulfing a good bit of nitrous. Remember that your O2's are downstream of were power is made and depending on if you're using a narrowband or wideband style o2 sensor, etc., it may or may not be all that great at compensating still. You just have to understand that if you're waiting for your o2's to sense a lean condition to add fuel, then you're doing a lot more harm than good.

Nitrous itself does not make horsepower (it needs more fuel to mix in w/ it). Your delay is how long your engine is in a lean condition and waiting for your ECU to add fuel as a response to the O2's sensing a lean condition. Once it finally adds some fuel to the mix, that's when the extra power is made and that's more than likely why you're saying it takes a second to kick in. Again, nitrous is typically sitting at 1000+psi, and your motorcycle cylinders are filling up w/ air 100 times per second. They are for sure filling w/ a good mix of nitrous instantly.

 

[mudblood]

Everything above is dead on except for maybe the 200 shot... It might take it, it might not... I wouldn't go above a 100 shot if it were me and I'd probably set the window switch, as previously stated, to come in no earlier than 3200. All of the torque seen in a mustang at 3k gets things moving. All of that torque on a raptor at 3k is really just putting a lot of strain on the bottom end to get this lead sled moving. But yeah, 2004boss is obviously a veteran of nitrous usage in vehicles and he and I have had much of the same experiences w/ it...


Again, true statements. A bog, a bent intake valve, etc..., can cause a nitrous backfire regardless of if you're using a wet or dry system. Obviously backfires are more common in wet systems as most modern intakes on fuel injected cars aren't designed for fuel to flow throw them (it's usually fine but some intakes are more prone to puddling than others)...

Again, technology has provided the end user w/ plenty of safety features that can make nitrous extremely safe. There's window switches which control the RPM window that you're actually spraying in, there's fuel pressure safety switches to ensure that you aren't spraying nitrous w/o proper fuel introduction (remember lean equals very very bad), there's all types of electronics to retard timing via a signal at the same time that signal opens the nitrous solenoids, etc...

And I love the 90 year old woman analogy and would have to agree completely - No need to put nitrous on a Raptor. Not unless you and you're buddies routinely drag race across plowed fields; which would be awesome and I envy you

You may have just started a new sport............dirt field drag racing!!!!

 

[Rockafella]

You may have just started a new sport............dirt field drag racing!!!!

This place is local to me... Have yet to see two trucks battle it out but it would be fun, lol... (Busco Beach - 2000+acre ATV park w/a drag strip)

where's that pic from mudblood? That looks like an awesome time to be had!!

Drag racing at Busco Beach - YouTube