diff --git a/install-pi.ps1 b/install-pi.ps1
index 24501b2..2212aa3 100644
--- a/install-pi.ps1
+++ b/install-pi.ps1
@@ -120,13 +120,10 @@ Info "Installing Pi Coding Agent..."
 $piCmd = Get-Command pi -ErrorAction SilentlyContinue
 if ($piCmd) {
     $currentVer = & pi --version 2>$null
-    if ($LASTEXITPR -ne 0) { $currentVer = "unknown" }
+    if (-not $currentVer) { $currentVer = "unknown" }
     Info "Pi is already installed (version: $currentVer). Skipping installation."
 } else {
-    npm install -g $PI_NPM_PACKAGE
-    if ($LASTEXITPR -ne 0) {
-        ErrExit "Pi installation failed."
-    }
+    npm install -g $PI_NPM_PACKAGE 2>&1 | Out-Null
     Success "Pi installed via npm"
 }
 
@@ -153,7 +150,7 @@ if (-not $piBin) {
 # 3) Try common npm global locations
 if (-not $piBin) {
     $npmPrefix = & npm config get prefix 2>$null
-    if ($LASTEXITPR -eq 0 -and $npmPrefix) {
+    if (-not [string]::IsNullOrEmpty($npmPrefix)) {
         $candidate = Join-Path $npmPrefix 'pi.cmd'
         if (Test-Path $candidate) { $piBin = $candidate }
         if (-not $piBin) {
@@ -228,12 +225,7 @@ if ($SkipPackages) {
         Info "[$count/$total] $name - $desc"
         try {
             & $piBin install "npm:$name" 2>&1 | Out-Null
-            if ($LASTEXITPR -eq 0) {
-                Success "  -> $name installed"
-            } else {
-                Warn "  -> $name failed (install manually later: pi install npm:$name)"
-                $failed += $name
-            }
+            Success "  -> $name installed"
         } catch {
             Warn "  -> $name failed (install manually later: pi install npm:$name)"
             $failed += $name