View Full Version : Wet vs Dry
Silver SS
April 16th, 2004, 01:54 AM
Wet vs Dry
What's the main difference between a wet vs dry kit?
Dry sprays before the MAF relying on the PCM to add more fuel to the mix.
Wet is a spray of N20 and fuel after the MAF.
Wet is supposed to be safer and better for power. But there's probably something about the wet set-up that can destroy a motor too.
ZOSicK
April 16th, 2004, 02:57 AM
u da man ... thanks for the info very usefull :bigok:
Mohnissan
April 16th, 2004, 03:12 AM
what do you mean by PCM
as I now :
the too system (dry and wet) came after the MAF and before the TB (I read that 6 inch before TB is good)
the dry system use the N2O only with out fuel
the wet system use a mix of fuel and N2O(control it by the size of jet)
the wet beter than dry it give you more power and if you select the right jets it will be save (if you use n2o it mean more power and more power need more fuel)
thanks for the info Silver SS
Silver SS
April 16th, 2004, 11:01 AM
Mohnissan... the PCM is the car computer
ANd thanks for your feed back on this... :up2:
Mohnissan
April 16th, 2004, 01:56 PM
thanks for info Silver SS
we call it ECU ( Engine Control Unit )
audi
April 16th, 2004, 03:06 PM
:eatout:
Silver SS
April 16th, 2004, 03:14 PM
ECU PCM.... same thang :up2:
Mohnissan
April 16th, 2004, 04:33 PM
thanks bro. :bigkiss:
audi
April 16th, 2004, 06:19 PM
what the difirence betwen the WET and DRY SEX??????
:laughing2 :laughing2 :laughing2 :laughing2
Silver SS
April 16th, 2004, 11:30 PM
audi.... :arg:
SS
April 17th, 2004, 08:27 AM
wet is safer i guess, if you dont have the right amount of fuel going into the cylinders, say bye bye to your engine.
Silver SS
April 17th, 2004, 10:37 AM
:bye:...
NaSSty99
April 25th, 2004, 02:14 PM
good info Silver SS, :up:
you can run a dry system and be just as safe, all you need is a good intank fuel pump, good fuel injectors (so you don't max out your factory one), and maybe a fuel pump booster to keep a good fuel pressure, colder step spark plugs, fuel pressure safety switch to stop spraying n2o if fuel pressure goes down, and the most important thing, good computer tunning for good air/fuel ratio, don't want to run too lean.
it's also good to have a window switch (like MSD) to control between which RPM you need to spray like between 3500-6000 rpm or before your shift point.
i heard spraying below 3000 rpm can be bad and produce back fire in the intake manifold.
in a wet system,well it's safer, and that's what i would run in my car (will put it soon inshallah), but you can destroy your motor just as well if a fuel selenoid goes bad.
Silver SS
April 25th, 2004, 02:32 PM
Thanks for your info on the subject :up2:
Keep us posted on how things go
mr.mustang
April 26th, 2004, 06:18 PM
thanks for the info
AHMED M. QAHRAMAN
September 25th, 2004, 02:50 AM
the pcm stands for Performance Computer Modulator, and ecu Engine Control Unit,
And regarding injecting the car with wet or dray they are both wet only the system is deferent or the way you do it, for the wet it comes a system that injects n2o + fuel in a plate system or forger system, the fuel ratio should be right so the engine will not detonate, in the dray case you should also adjust the ratio of the fuel and n2o for that in some cases the kit comes with additional inline fuel pump and some vacuum setup that increases the fuel pressure when you activate the nos, and in some cases you should use adjustable fuel pressure regulator to increase the fuel pressure and the motor will run rich so that when you activate the ratio will be good in the engine, and some engine builders that use stand alone engine management they will have in there program a fuel map table that will activate when the nitrous activates from a switch by hand or from the stand alone computer, the engine will run normal with the base program that is for n/a or f/a and have twin fogger system dray the when they activate the nos the nos program table will increase the fuel ratio to the injectors and then the engine will run in good fuel ratio that there is no lean condition on the engine so some of you may agree all things come to force the engine the fuel ratio should be right or you can kiss the engine good bay, main point is some of the guy's use dray with colder plugs but not adjusting the fuel ratio but it is running good that because you are still in safe mode with the jetting you have you are running jets that are in the fuel ratio that is still good to go with this but for others you will se the jetting wrong and it exceeds the fuel ratio for that you see them after while there engine is down for overhauling, main thing Gus it is wet what you need so your engine will live more and tray all the time when you are going to use nos check your car mileages so you no how much you can push it.
Rule one
1- Use egt on your exhaust so you could no if you are running the right jets.
2- Use colder plugs and chose between projected type and non-projected when the plug heat is right but there is some miss firing use the non projected.
3- Every time not your fuel octane the higher is batter but for nos fuel gravity is important.
4- Weather no when is best for the power that you are using and equal to the octane and fuel ratio.
Sorry that I toke so much but please if you see any thing wrong in my explanation advice.
Looking forward
Sincerely yours
Ahmed m. qahraman
Striker
September 29th, 2004, 09:46 PM
thanx Qahraman for the very useful info :up2:
4ced
September 30th, 2004, 01:50 PM
the most important thing in a nitrous set up is bascially how well it is set up! doesnt matter if its wet or dry, if its not done up 100% right a small mistake can blow your engine. If you are installing it yourself, make sure you know what your doing 100%, and if your gonna take it to a mechanic, make sure he's familiar with it and has installed nos a bunch of times before, preferably on an engine like yours.
both systems have the same result its just the way they they achieve it. I think that if installed properly and used with care then you can have a good use of NoS on your engine for a while with no problems. Dry is usually more difficult to install correctly.
NaSSty99, ur rigth about the low rpm, you should use NoS in higher rev's, preferably a little before the redline or in your maximum output rev. Also, usage for more than few seconds is generally a no no u dont know what could happen in those few seconds and pushing it anything more than you should without knowing whats going on in your engine might just push it beyond the edge.
NOS4EVER
September 30th, 2004, 06:04 PM
Ahmed m. qahraman are u in bahrain or still in U.A.E :pimp:
AHMED M. QAHRAMAN
October 5th, 2004, 08:23 AM
I am still in the uae, looking forward to come to Bahrain in Ramadan
Inshalla.
Regards
Ahmed m. qahraman
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