For install remplace the file LAe2.IPL in folder (gta-sa\data\maps\LA) 

Or method2: Add the code objects in LAe2.IPL with notepad:

13644, steps, 0, 2478.8, -1286.8, 27.6, 0, 0, 0, 1, -1 
3115, CARRIER_LIFT1_SFSE, 0, 2480.5, -1285, 28.9, 0, 0, 0, 1, -1
2057, Flame_tins, 0, 2473, -1283.6, 29.365, 0, 0, 0, 1, -1 
17968, hubridge_smash, 0, 2469.8, -1290.8, 28.1, 0, 0, 0, 1, -1 
17968, hubridge_smash, 0, 2469.2998, -1290.9004, 27.91, 0, 0, 0, 1, -1 
17968, hubridge_smash, 0, 2468.8301, -1290.9004, 27.73, 0, 0, 0, 1, -1 
3406, cxref_woodjetty, 0, 2475.7002, -1306.5996, 26.8, 0, 0, 0, 1, -1 
3406, cxref_woodjetty, 0, 2484.5, -1306.5996, 26.8, 0, 0, 0, 1, -1 
16092, des_pipestrut05, 0, 2476.54, -1287.2998, 25.682, 0, 0, 0, 1, -1 
919, AIRCON, 0, 2469.9756, -1276.9795, 31.63, 0, 0, 0, 1, -1 
14491, iwanfucker, 0, 2481.3, -1286.9, 31.5, 0, 0, 0, 1, -1 
14493, arsehole, 0, 2474.5, -1283.2, 31.5, 0, 0, 0, 1, -1 
14895, mp_sfpd_obj2, 0, 2467.3999, -1281.4, 23.4, 0, 0, 0, 1, -1
14802, BDups_interior, 0, 2473.3999, -1298.7, 30.2, 0, 0, 0, 1, -1 
14802, BDups_interior, 0, 2472.2, -1275, 30.3, 0, 0, 0, 1, -1 
17564, Tempdoor_LAe2, 0, 2476.5, -1271.3, 30.1, 0, 0, 0, 1, -1 
1343, CJ_Dumpster3, 0, 2482.8601, -1291.5, 29.95, 0, 0, 0, 1, -1
14840, Bdups_graf, 0, 2483.6001, -1277.5, 30.5, 0, 0, 0, 1, -1 
18003, int_barberA03, 0, 2472.3, -1298.2, 29.51, 0, 0, 0, 1, -1 
948, Plant_Pot_10, 0, 2465.5, -1290.1, 27.5, 0, 0, 0, 1, -1 
1597, cntrlrsac1, 0, 2483.6001, -1271.1, 28, 0, 0, 0, 1, -1 
2010, nu_plant3_ofc, 0, 2484.8, -1282.2, 28.4, 0, 0, 0, 1, -1 
2011, nu_plant2_ofc, 0, 2478.8999, -1304, 27.1, 0, 0, 0, 1, -1 
2241, Plant_Pot_5, 0, 2465.1001, -1299.9, 27.3, 0, 0, 0, 1, -1 
836, DEAD_TREE_10, 0, 2482.6001, -1282.1, 29.8, 0, 0, 0, 1, -1 
14872, Kylie_logs, 0, 2479.8201, -1303.22, 29.3, 0, 0, 0, 1, -1 
14490, cuntchair, 0, 2481.3, -1287, 31.5, 0, 0, 0, 1, -1 
2852, gb_bedmags02, 0, 2473.3101, -1286.1, 29.65, 0, 0, 0, 1, -1
2816, gb_bedmags01, 0, 2473.2, -1286.9, 29.66, 0, 0, 0, 1, -1 
2074, CJ_MLIGHT8, 0, 2470.3999, -1295.5, 32, 0, 0, 0, 1, -1 
2673, PROC_RUBBISH_5, 0, 2472.5, -1287.5, 29.273, 0, 0, 0, 1, -1
2670, PROC_RUBBISH_1, 0, 2474.1001, -1285, 29.28, 0, 0, 0, 1, -1
1481, DYN_BAR_B_Q, 0, 2476.6001, -1283.7, 29.8, 0, 0, 0, 1, -1 
2601, CJ_JUICE_CAN, 0, 2473.3, -1286.65, 29.74, 0, 0, 0, 1, -1


Save and Exit
__________________________________________


DLC; Code in .pwn for sa-mp servers

CreateObject(13644, 2478.8, -1286.8, 27.6, 0, 0, 0); 
CreateObject(3115, 2480.5, -1285, 28.9, 0, 0, 0); 
CreateObject(2057, 2473, -1283.6, 29.365, 0, 0, 0); 
CreateObject(17968, 2469.8, -1290.8, 28.1, 0, 0, 0); 
CreateObject(17968, 2469.2998, -1290.9004, 27.91, 0, 0, 0); 
CreateObject(17968, 2468.8301, -1290.9004, 27.73, 0, 0, 0); 
CreateObject(3406, 2475.7002, -1306.5996, 26.8, 0, 0, 0); 
CreateObject(3406, 2484.5, -1306.5996, 26.8, 0, 0, 0); 
CreateObject(16092, 2476.54, -1287.2998, 25.682, 0, 0, 0); 
CreateObject(919, 2469.9756, -1276.9795, 31.63, 0, 0, 0); 
CreateObject(14491, 2481.3, -1286.9, 31.5, 0, 0, 0); 
CreateObject(14493, 2474.5, -1283.2, 31.5, 0, 0, 0); 
CreateObject(14895, 2467.3999, -1281.4, 23.4, 0, 0, 0); 
CreateObject(14802, 2473.3999, -1298.7, 30.2, 0, 0, 0); 
CreateObject(14802, 2472.2, -1275, 30.3, 0, 0, 0); 
CreateObject(17564, 2476.5, -1271.3, 30.1, 0, 0, 0); 
CreateObject(1343, 2482.8601, -1291.5, 29.95, 0, 0, 0); 
CreateObject(14840, 2483.6001, -1277.5, 30.5, 0, 0, 0); 
CreateObject(18003, 2472.3, -1298.2, 29.51, 0, 0, 0); 
CreateObject(948, 2465.5, -1290.1, 27.5, 0, 0, 0); 
CreateObject(1597, 2483.6001, -1271.1, 28, 0, 0, 0); 
CreateObject(2010, 2484.8, -1282.2, 28.4, 0, 0, 0); 
CreateObject(2011, 2478.8999, -1304, 27.1, 0, 0, 0); 
CreateObject(2241, 2465.1001, -1299.9, 27.3, 0, 0, 0); 
CreateObject(836, 2482.6001, -1282.1, 29.8, 0, 0, 0); 
CreateObject(14872, 2479.8201, -1303.22, 29.3, 0, 0, 0); 
CreateObject(14490, 2481.3, -1287, 31.5, 0, 0, 0); 
CreateObject(2852, 2473.3101, -1286.1, 29.65, 0, 0, 0); 
CreateObject(2816, 2473.2, -1286.9, 29.66, 0, 0, 0); 
CreateObject(2074, 2470.3999, -1295.5, 32, 0, 0, 0); 
CreateObject(2673, 2471, -1285.5, 29.28, 0, 0, 0); 
CreateObject(2670, 2474.3, -1283.8, 29.28, 0, 0, 0); 
CreateObject(1481, 2476.6001, -1283.7, 29.8, 0, 0, 0); 
CreateObject(2601, 2473.3, -1286.65, 29.74, 0, 0, 0);


__________________________________________

Code for Multi Theft Auto editor.

<map edf:definitions="editor_main"> 
    <object id="object (steps) (1)" breakable="true" interior="0" collisions="true" alpha="255" model="13644" doublesided="false" scale="1" dimension="0" posX="2478.8" posY="-1286.8" posZ="27.6" rotX="0" rotY="0" rotZ="0"></object> 
    <object id="object (CARRIER_LIFT1_SFSE) (1)" breakable="true" interior="0" collisions="true" alpha="255" model="3115" doublesided="false" scale="1" dimension="0" posX="2480.5" posY="-1285" posZ="28.9" rotX="0" rotY="0" rotZ="0"></object> 
    <object id="object (Flame_tins) (1)" breakable="true" interior="0" collisions="true" alpha="255" model="2057" doublesided="false" scale="1" dimension="0" posX="2473" posY="-1283.6" posZ="29.365" rotX="0" rotY="0" rotZ="0"></object> 
    <object id="object (hubridge_smash) (1)" breakable="true" interior="0" collisions="true" alpha="255" model="17968" doublesided="false" scale="1" dimension="0" posX="2469.8" posY="-1290.8" posZ="28.1" rotX="0" rotY="0" rotZ="0"></object> 
    <object id="object (hubridge_smash) (2)" breakable="true" interior="0" collisions="true" alpha="255" model="17968" doublesided="false" scale="1" dimension="0" posX="2469.2998" posY="-1290.9004" posZ="27.91" rotX="0" rotY="0" rotZ="0"></object> 
    <object id="object (hubridge_smash) (3)" breakable="true" interior="0" collisions="true" alpha="255" model="17968" doublesided="false" scale="1" dimension="0" posX="2468.8301" posY="-1290.9004" posZ="27.73" rotX="0" rotY="0" rotZ="0"></object> 
    <object id="object (cxref_woodjetty) (1)" breakable="true" interior="0" collisions="true" alpha="255" model="3406" doublesided="false" scale="1" dimension="0" posX="2475.7002" posY="-1306.5996" posZ="26.8" rotX="0" rotY="0" rotZ="0"></object> 
    <object id="object (cxref_woodjetty) (2)" breakable="true" interior="0" collisions="true" alpha="255" model="3406" doublesided="false" scale="1" dimension="0" posX="2484.5" posY="-1306.5996" posZ="26.8" rotX="0" rotY="0" rotZ="0"></object> 
    <object id="object (des_pipestrut05) (1)" breakable="true" interior="0" collisions="true" alpha="255" model="16092" doublesided="false" scale="1" dimension="0" posX="2476.54" posY="-1287.2998" posZ="25.682" rotX="0" rotY="0" rotZ="0"></object> 
    <object id="object (AIRCON) (1)" breakable="true" interior="0" collisions="true" alpha="255" model="919" doublesided="false" scale="1" dimension="0" posX="2469.9756" posY="-1276.9795" posZ="31.63" rotX="0" rotY="0" rotZ="0"></object> 
    <object id="object (iwanfucker) (1)" breakable="true" interior="0" collisions="true" alpha="255" model="14491" doublesided="false" scale="1" dimension="0" posX="2481.3" posY="-1286.9" posZ="31.5" rotX="0" rotY="0" rotZ="0"></object> 
    <object id="object (arsehole) (1)" breakable="true" interior="0" collisions="true" alpha="255" model="14493" doublesided="false" scale="1" dimension="0" posX="2474.5" posY="-1283.2" posZ="31.5" rotX="0" rotY="0" rotZ="0"></object> 
    <object id="object (mp_sfpd_obj2) (1)" breakable="true" interior="0" collisions="true" alpha="255" model="14895" doublesided="false" scale="1" dimension="0" posX="2467.3999" posY="-1281.4" posZ="23.4" rotX="0" rotY="0" rotZ="0"></object> 
    <object id="object (BDups_interior) (1)" breakable="true" interior="0" collisions="true" alpha="255" model="14802" doublesided="false" scale="1" dimension="0" posX="2473.3999" posY="-1298.7" posZ="30.2" rotX="0" rotY="0" rotZ="0"></object> 
    <object id="object (BDups_interior) (2)" breakable="true" interior="0" collisions="true" alpha="255" model="14802" doublesided="false" scale="1" dimension="0" posX="2472.2" posY="-1275" posZ="30.3" rotX="0" rotY="0" rotZ="0"></object> 
    <object id="object (Tempdoor_LAe2) (1)" breakable="true" interior="0" collisions="true" alpha="255" model="17564" doublesided="false" scale="1" dimension="0" posX="2476.5" posY="-1271.3" posZ="30.1" rotX="0" rotY="0" rotZ="0"></object> 
    <object id="object (CJ_Dumpster3) (1)" breakable="true" interior="0" collisions="true" alpha="255" model="1343" doublesided="false" scale="1" dimension="0" posX="2482.8601" posY="-1291.5" posZ="29.95" rotX="0" rotY="0" rotZ="0"></object>
    <object id="object (Bdups_graf) (1)" breakable="true" interior="0" collisions="true" alpha="255" model="14840" doublesided="false" scale="1" dimension="0" posX="2483.6001" posY="-1277.5" posZ="30.5" rotX="0" rotY="0" rotZ="0"></object> 
    <object id="object (int_barberA03) (1)" breakable="true" interior="0" collisions="true" alpha="255" model="18003" doublesided="false" scale="1" dimension="0" posX="2472.3" posY="-1298.2" posZ="29.51" rotX="0" rotY="0" rotZ="0"></object>
    <object id="object (Plant_Pot_10) (1)" breakable="true" interior="0" collisions="true" alpha="255" model="948" doublesided="false" scale="1" dimension="0" posX="2465.5" posY="-1290.1" posZ="27.5" rotX="0" rotY="0" rotZ="0"></object> 
    <object id="object (cntrlrsac1) (1)" breakable="true" interior="0" collisions="true" alpha="255" model="1597" doublesided="false" scale="1" dimension="0" posX="2483.6001" posY="-1271.1" posZ="28" rotX="0" rotY="0" rotZ="0"></object> 
    <object id="object (nu_plant3_ofc) (1)" breakable="true" interior="0" collisions="true" alpha="255" model="2010" doublesided="false" scale="1" dimension="0" posX="2484.8" posY="-1282.2" posZ="28.4" rotX="0" rotY="0" rotZ="0"></object> 
    <object id="object (nu_plant2_ofc) (1)" breakable="true" interior="0" collisions="true" alpha="255" model="2011" doublesided="false" scale="1" dimension="0" posX="2478.8999" posY="-1304" posZ="27.1" rotX="0" rotY="0" rotZ="0"></object> 
    <object id="object (Plant_Pot_5) (1)" breakable="true" interior="0" collisions="true" alpha="255" model="2241" doublesided="false" scale="1" dimension="0" posX="2465.1001" posY="-1299.9" posZ="27.3" rotX="0" rotY="0" rotZ="0"></object> 
    <object id="object (DEAD_TREE_10) (1)" breakable="true" interior="0" collisions="true" alpha="255" model="836" doublesided="false" scale="1" dimension="0" posX="2482.6001" posY="-1282.1" posZ="29.8" rotX="0" rotY="0" rotZ="0"></object> 
    <object id="object (Kylie_logs) (1)" breakable="true" interior="0" collisions="true" alpha="255" model="14872" doublesided="false" scale="1" dimension="0" posX="2479.8201" posY="-1303.22" posZ="29.3" rotX="0" rotY="0" rotZ="0"></object>
    <object id="object (cuntchair) (1)" breakable="true" interior="0" collisions="true" alpha="255" model="14490" doublesided="false" scale="1" dimension="0" posX="2481.3" posY="-1287" posZ="31.5" rotX="0" rotY="0" rotZ="0"></object> 
    <object id="object (gb_bedmags02) (1)" breakable="true" interior="0" alpha="255" model="2852" doublesided="false" scale="1" dimension="0" posX="2473.3101" posY="-1286.1" posZ="29.65" rotX="0" rotY="0" rotZ="0"></object> 
    <object id="object (gb_bedmags01) (1)" breakable="true" interior="0" alpha="255" model="2816" doublesided="false" scale="1" dimension="0" posX="2473.2" posY="-1286.9" posZ="29.66" rotX="0" rotY="0" rotZ="0"></object> 
    <object id="object (CJ_MLIGHT8) (1)" breakable="true" interior="0" alpha="255" model="2074" doublesided="false" scale="1" dimension="0" posX="2470.3999" posY="-1295.5" posZ="32" rotX="0" rotY="0" rotZ="0"></object> 
    <object id="object (PROC_RUBBISH_5) (1)" breakable="true" interior="0" collisions="true" alpha="255" model="2673" doublesided="false" scale="1" dimension="0" posX="2471" posY="-1285.5" posZ="29.28" rotX="0" rotY="0" rotZ="0"></object>
    <object id="object (PROC_RUBBISH_1) (1)" breakable="true" interior="0" collisions="true" alpha="255" model="2670" doublesided="false" scale="1" dimension="0" posX="2474.3" posY="-1283.8" posZ="29.28" rotX="0" rotY="0" rotZ="0"></object>
    <object id="object (DYN_BAR_B_Q) (1)" breakable="true" interior="0" alpha="255" model="1481" doublesided="false" scale="1" dimension="0" posX="2476.6001" posY="-1283.7" posZ="29.8" rotX="0" rotY="0" rotZ="0"></object> 
    <object id="object (CJ_JUICE_CAN) (1)" breakable="true" interior="0" alpha="255" model="2601" doublesided="false" scale="1" dimension="0" posX="2473.3" posY="-1286.65" posZ="29.74" rotX="0" rotY="0" rotZ="0"></object> 
</map>




Picture: https://abload.de/img/east_los_santos_sesz1.jpg
Credit: Tellken, R*
Greetz: http://forum.sa-mp.com/showthread.php?t=624621