You can reduce the time a tiny bit by performing the operations manually, but just by a few Instruction cycles.

Here is what I ran in the MPLAB Simulator.
The times are listed for each method.

Code:
'****************************************************************
'*  Name    : DigTest.pbp                                       *
'*  Author  : TABsoft                                           *
'*  Notice  : Copyright (c) 2015 TABSoft                        *
'*          : All Rights Reserved                               *
'*  Date    : 2/12/2015                                         *
'*  Version : 1.0                                               *
'*  Notes   : PIC MCU @ 4MHz                                    *
'*          :                                                   *
'****************************************************************

'*****PIC MCU Configuration Fuses (MPASM)*****
#IF __PROCESSOR__ = "18F4620"
    #CONFIG
        CONFIG OSC = ECIO6            ; EC oscillator, port function on RA6
        ;CONFIG OSC = INTIO67	      ; Internal oscillator block, port function on RA6 and RA7
        ;CONFIG  WDT = OFF             ; WDT disabled (control is placed on the SWDTEN bit)
        CONFIG  FCMEN = OFF           ; Fail-Safe Clock Monitor disabled
        CONFIG  IESO = OFF            ; Oscillator Switchover mode disabled
        CONFIG  PWRT = OFF            ; PWRT disabled
        CONFIG  BOREN = SBORDIS       ; Brown-out Reset enabled in hardware only (SBOREN is disabled)
        CONFIG  BORV = 3              ; Minimum setting
        CONFIG  WDT = ON              ; WDT enabled
        CONFIG  WDTPS = 512           ; 1:512
        CONFIG  CCP2MX = PORTC        ; CCP2 input/output is multiplexed with RC1
        CONFIG  PBADEN = OFF          ; PORTB<4:0> pins are configured as digital I/O on Reset
        CONFIG  LPT1OSC = OFF         ; Timer1 configured for higher power operation
        CONFIG  MCLRE = ON            ; MCLR pin enabled; RE3 input pin disabled
        CONFIG  STVREN = ON           ; Stack full/underflow will cause Reset
        CONFIG  LVP = OFF             ; Single-Supply ICSP disabled
        CONFIG  XINST = OFF           ; Instruction set extension and Indexed Addressing mode disabled (Legacy mode)
        CONFIG  DEBUG = OFF           ; Background debugger disabled, RB6 and RB7 configured as general purpose I/O pins
        CONFIG  CP0 = OFF             ; Block 0 (000800-003FFFh) not code-protected
        CONFIG  CP1 = OFF             ; Block 1 (004000-007FFFh) not code-protected
        CONFIG  CP2 = OFF             ; Block 2 (008000-00BFFFh) not code-protected
        CONFIG  CP3 = OFF             ; Block 3 (00C000-00FFFFh) not code-protected
        CONFIG  CPB = OFF             ; Boot block (000000-0007FFh) not code-protected
        CONFIG  CPD = OFF             ; Data EEPROM not code-protected
        CONFIG  WRT0 = OFF            ; Block 0 (000800-003FFFh) not write-protected
        CONFIG  WRT1 = OFF            ; Block 1 (004000-007FFFh) not write-protected
        CONFIG  WRT2 = OFF            ; Block 2 (008000-00BFFFh) not write-protected
        CONFIG  WRT3 = OFF            ; Block 3 (00C000-00FFFFh) not write-protected
        CONFIG  WRTC = OFF            ; Configuration registers (300000-3000FFh) not write-protected
        CONFIG  WRTB = OFF            ; Boot Block (000000-0007FFh) not write-protected
        CONFIG  WRTD = OFF            ; Data EEPROM not write-protected
        CONFIG  EBTR0 = OFF           ; Block 0 (000800-003FFFh) not protected from table reads executed in other blocks
        CONFIG  EBTR1 = OFF           ; Block 1 (004000-007FFFh) not protected from table reads executed in other blocks
        CONFIG  EBTR2 = OFF           ; Block 2 (008000-00BFFFh) not protected from table reads executed in other blocks
        CONFIG  EBTR3 = OFF           ; Block 3 (00C000-00FFFFh) not protected from table reads executed in other blocks
        CONFIG  EBTRB = OFF           ; Boot Block (000000-0007FFh) not protected from table reads executed in other blocks

    #ENDCONFIG
#else
    #ERROR "This program requires a PIC 18F4620 MCU"
#endif

OSCCON = $60  ' Set PIC to 4Mhz & ECIO Clock Mode

 DEFINE OSC 4
   ADCON0.0 = 0  ' A/D Converter module is disabled   
     ADCON1 = $0F  ' %0000 1111 AN2=VSS, AN3=VDD, AN12-0 = Digital 
     ADCON2 = $00  ' %0000 0000
      TRISB = %11111111 ' Set PORTB as input
  INTCON2.7 = 0 ' Enable PORTB pullups
      TRISC = TRISC & %11011111   ' Set PORTC pin directions (pin5 output to RTC VCC2)


'*****Define LCD registers and bits*****
define LCD_BITS      4  
define LCD_LINES     2  ' Set to number of lines for the LCD
Define LCD_DREG      PORTD
Define LCD_DBIT      4  
Define LCD_RSREG     PORTE
Define LCD_RSBIT     0
Define LCD_EREG      PORTE
Define LCD_EBIT      1
define LCD_RWREG     PORTE
define LCD_RWBIT     2
define LCD_COMMANDUS 1500
define LCD_DATAUS    44

pressure var word
tmpDig0 var byte
tmpDig1 var byte
tmpDig2 var byte
tmpDig3 var byte

'*****Initialize LCD*****
   Low LATE.2  		    ' LCD R/W line low (W)
   Pause 500       	  ' Wait .5 second for LCD to Initialize


main:
lcdout $fe,1
pressure = 1102

'Start Stopwatch in MPLAB Simulator
tmpDig0 = pressure dig 0
tmpDig1 = pressure dig 1
tmpDig2 = pressure dig 2
tmpDig3 = pressure dig 3
'Stop Stopwatch in MPLAB Simulator  = 2962 Instruction Cycles @4MHz = 2.962ms (Fosc/4)

lcdout $fe,1,dec tmpDig3, dec tmpDig2, dec tmpDig1, dec tmpDig0
pause 500

'Start Stopwatch in MPLAB Simulator
tmpDig0 = pressure // 10
tmpDig1 = pressure / 10
tmpDig2 = pressure / 100
tmpDig3 = pressure / 1000

tmpDig1 = tmpDig1 // 10 
tmpDig2 = tmpDig2 // 10
tmpDig3 = tmpDig3 // 10
'Stop Stopwatch in MPLAB Simulator  = 2086 Instruction Cycles @4MHz = 2.086ms (Fosc/4)

lcdout $fe,$c0,dec tmpDig3, dec tmpDig2, dec tmpDig1, dec tmpDig0
pause 500
goto main
end