Macle requested for a EV training guide for Pokemon Emerald so I decided to write it up so here it is, let me know if anything should be added, removed, or changed and ill get right on it.
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EV Training in Pokemon Emerald
Introduction
The following guide contains information on EV training in Pokemon Emerald. It will tell you all the necessary items you will need and where to get them. This guide also covers how to calculate your gained EVs and the hotspots for EV training in certain stats.
High Encountered Pokemon for EV Training
EV Training for HP
Whismur
Location: Rusturf Tunnel
Appearance Rate: 100%
EVs: 1 HP
EV Training for Attack
Poochyena
Location: Route 101
Appearance Rate: 45%
EVs: 1 Attack
Carvahna
Location: Route 118, Route 119
Appearance Rate: 60% Fishing (Super Rod)
EVs: 1 Attack
Shuppet
Location: Mt.Pyre (Floors 1-3)
Appearance Rate: 100%
EVs: 1 Attack
EV Training for Special Attack
Spinda
Location: Route 113
Appearance Rate: 70%
EVs: 1 Special Attack
EV Training for Special Defense
Tentacool
Location: Abandoned Ship
Appearance Rate: 99% (Surfing), 80% Fishing (Super Rod)
EVs: 1 Special Defense
Tentacruel
Location: Abandoned Ship
Appearance Rate: 1% (Surfing), 20% Fishing (Super Rod)
EVs: 2 Special Defense
EV Training for Speed
Zubat
Location: Cave of Origin (Cave)
Appearance Rate: 90%
EVs: 1 Speed
Golbat
Location: Meteor Falls
Appearance Rate: 65% (Inner Cave), 90% (Inner Cave Surfing)
EVs: 2 Speed
Hotspots for EV Training over Multiple Pokemon
EV Training for HP
Desert Underpass
Pokemon: Loudred, Whismur, Ditto
Appearance Rates: 16%. 34%, 50% (100% chance to encounter a Pokemon who yields HP EVs)
EVs: 2, 1, 1
EV Training for Attack
Route 121
Pokemon: Shuppet, Poochyena, Mightyena
Appearance Rates: 30%, 20%, 20% (70% chance to encounter a Pokemon who yields Attack EVs)
EVs: 1, 1, 2
EV Training for Defense
Magma Hideout
Pokemon: Graveler, Geodude, Torkoal
Appearance Rates: 15%, 50%, 35% (Inside Cave) (100% chance to encounter a Pokemon who yields Defense EVs)
EV's: 2, 1, 2
EV Training for Special Defense
Route 114
Pokemon: Lombre, Lotad, Swablu
Appearance Rates: 20%, 30%, 40% (90% chance to encounter a Pokemon who yields Special Defense EVs)
EVs: 2, 1, 1
EV Training for Speed
Route 118
Pokemon: Zigzagoon, Electrike, Wingull, Linoone, Manectric
Appearance Rates: 30%, 30%, 19%, 10%, 10% (99% chance to encounter a Pokemon who yields Speed EVs)
EVs: 1, 1, 1, 2, 2
Macho Brace
The Macho Brace is an item that will make EV training slightly easier because it doubles the EVs you gain in battle.
Where to find the Macho Brace?
The Macho Brace can be obtained from the Winstrate's House on Route 211 right above Mauville.
Pokerus
Pokerus is another handy tool in EV Training because it doubles the amount of EVs you gain in battle as well. The downside of Pokerus is that it is extremely hard to find.
How to find Pokerus?
Pokerus can be found by battling wild Pokemon in the grass and capturing a wild Pokemon infected with Pokerus.
When infected with Pokerus, there will be a purple "PKRS" sign in the status screen of the Pokemon. Pokerus will stay until the game's clock reaches midnight. Once the game hits midnight the Pokemon will be cleared of Pokerus and will no longer be able to infect others with it but it will still gain double the amount of EVs. Pokemon kept in the PC or Daycare with Pokerus will keep the infection as long as you do not withdraw them.
Secret Base EV Training
In Pokemon Emerald you can mix records with any other Pokemon Emerald, Ruby, or Sapphire game. Mixing records requires you to either have two of the above game cartridges and two Game Boy Advances, or know someone with them, which makes it a little harder to do. After mixing records, if you go to the location of your friend's Secret Base you mixed records with you can enter it. Inside will be an NPC and they will have the Pokemon party that your friend had at the time you mixed records. You can use this method by having your friend have a party of Pokemon who give 3 EVs in one stat, making EV training a lot easier and faster. Note that you need to have beaten the Elite Four for this to work and these battles can only be done once a day.
Ditto EV Training
In Pokemon Emerald, Ditto can be found in the Desert Underpass. Ditto can be used as a handy EV training tool and here is how. First you put the Pokemon you want EV trained in the first slot and a Pokemon who yields 3 EVs in the stat in which you're EV training in your party. Once you have encountered a Ditto switch to the Pokemon who yields 3 EVs, let Ditto transform into that Pokemon, and then KO the Ditto with the Pokemon you're EV training. The Pokemon you're EV Training has now gained 3 easy EVs.
Calculating EVs
1 EV + Macho Brace = 2 EVs
1 EV + Pokerus = 2 EVs
1 EV + Macho Brace + Pokerus = 4 EVs
2 EVs + Macho Brace = 4 EVs
2 EVs + Pokerus = 4 EVs
2 EVs + Macho Brace + Pokerus = 8 EVs
3 EVs + Macho Brace = 6 EVs
3 EVs + Pokerus = 6 EVS
3 EVs + Macho Brace + Pokerus = 12 EVs
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EV Training in Pokemon Emerald
Introduction
The following guide contains information on EV training in Pokemon Emerald. It will tell you all the necessary items you will need and where to get them. This guide also covers how to calculate your gained EVs and the hotspots for EV training in certain stats.
High Encountered Pokemon for EV Training
EV Training for HP
Whismur
Location: Rusturf Tunnel
Appearance Rate: 100%
EVs: 1 HP
EV Training for Attack
Poochyena
Location: Route 101
Appearance Rate: 45%
EVs: 1 Attack
Carvahna
Location: Route 118, Route 119
Appearance Rate: 60% Fishing (Super Rod)
EVs: 1 Attack
Shuppet
Location: Mt.Pyre (Floors 1-3)
Appearance Rate: 100%
EVs: 1 Attack
EV Training for Special Attack
Spinda
Location: Route 113
Appearance Rate: 70%
EVs: 1 Special Attack
EV Training for Special Defense
Tentacool
Location: Abandoned Ship
Appearance Rate: 99% (Surfing), 80% Fishing (Super Rod)
EVs: 1 Special Defense
Tentacruel
Location: Abandoned Ship
Appearance Rate: 1% (Surfing), 20% Fishing (Super Rod)
EVs: 2 Special Defense
EV Training for Speed
Zubat
Location: Cave of Origin (Cave)
Appearance Rate: 90%
EVs: 1 Speed
Golbat
Location: Meteor Falls
Appearance Rate: 65% (Inner Cave), 90% (Inner Cave Surfing)
EVs: 2 Speed
Hotspots for EV Training over Multiple Pokemon
EV Training for HP
Desert Underpass
Pokemon: Loudred, Whismur, Ditto
Appearance Rates: 16%. 34%, 50% (100% chance to encounter a Pokemon who yields HP EVs)
EVs: 2, 1, 1
EV Training for Attack
Route 121
Pokemon: Shuppet, Poochyena, Mightyena
Appearance Rates: 30%, 20%, 20% (70% chance to encounter a Pokemon who yields Attack EVs)
EVs: 1, 1, 2
EV Training for Defense
Magma Hideout
Pokemon: Graveler, Geodude, Torkoal
Appearance Rates: 15%, 50%, 35% (Inside Cave) (100% chance to encounter a Pokemon who yields Defense EVs)
EV's: 2, 1, 2
EV Training for Special Defense
Route 114
Pokemon: Lombre, Lotad, Swablu
Appearance Rates: 20%, 30%, 40% (90% chance to encounter a Pokemon who yields Special Defense EVs)
EVs: 2, 1, 1
EV Training for Speed
Route 118
Pokemon: Zigzagoon, Electrike, Wingull, Linoone, Manectric
Appearance Rates: 30%, 30%, 19%, 10%, 10% (99% chance to encounter a Pokemon who yields Speed EVs)
EVs: 1, 1, 1, 2, 2
Macho Brace
The Macho Brace is an item that will make EV training slightly easier because it doubles the EVs you gain in battle.
Where to find the Macho Brace?
The Macho Brace can be obtained from the Winstrate's House on Route 211 right above Mauville.
Pokerus
Pokerus is another handy tool in EV Training because it doubles the amount of EVs you gain in battle as well. The downside of Pokerus is that it is extremely hard to find.
How to find Pokerus?
Pokerus can be found by battling wild Pokemon in the grass and capturing a wild Pokemon infected with Pokerus.
When infected with Pokerus, there will be a purple "PKRS" sign in the status screen of the Pokemon. Pokerus will stay until the game's clock reaches midnight. Once the game hits midnight the Pokemon will be cleared of Pokerus and will no longer be able to infect others with it but it will still gain double the amount of EVs. Pokemon kept in the PC or Daycare with Pokerus will keep the infection as long as you do not withdraw them.
Secret Base EV Training
In Pokemon Emerald you can mix records with any other Pokemon Emerald, Ruby, or Sapphire game. Mixing records requires you to either have two of the above game cartridges and two Game Boy Advances, or know someone with them, which makes it a little harder to do. After mixing records, if you go to the location of your friend's Secret Base you mixed records with you can enter it. Inside will be an NPC and they will have the Pokemon party that your friend had at the time you mixed records. You can use this method by having your friend have a party of Pokemon who give 3 EVs in one stat, making EV training a lot easier and faster. Note that you need to have beaten the Elite Four for this to work and these battles can only be done once a day.
Ditto EV Training
In Pokemon Emerald, Ditto can be found in the Desert Underpass. Ditto can be used as a handy EV training tool and here is how. First you put the Pokemon you want EV trained in the first slot and a Pokemon who yields 3 EVs in the stat in which you're EV training in your party. Once you have encountered a Ditto switch to the Pokemon who yields 3 EVs, let Ditto transform into that Pokemon, and then KO the Ditto with the Pokemon you're EV training. The Pokemon you're EV Training has now gained 3 easy EVs.
Calculating EVs
1 EV + Macho Brace = 2 EVs
1 EV + Pokerus = 2 EVs
1 EV + Macho Brace + Pokerus = 4 EVs
2 EVs + Macho Brace = 4 EVs
2 EVs + Pokerus = 4 EVs
2 EVs + Macho Brace + Pokerus = 8 EVs
3 EVs + Macho Brace = 6 EVs
3 EVs + Pokerus = 6 EVS
3 EVs + Macho Brace + Pokerus = 12 EVs