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Engine Tunes/Mods

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What weight oil do you use?
15
89K
 by wayward one
DTC P0300 Random Misfire
2
25
49K
 by Vibreent
Can any tuner with efi live tune P10 PCM for turbo?
3
2K
 by lw12067681
trailblazer LS 5.3 to lq4 swap
2
2K
 by HotRods442
Valve cover gasket job?
6
3K
 by miketexas
tuneup
16
2K
 by EvFoSheazy
4.2 6 engine issues ??
0
317
 by Mario2k4
05 pcm ecm
4
519
 by dh4645
Engine Knocking or Noise
1
670
 by LSXHP
turbo manifold
2
1K
 by B_rock
Clutch and codes?
11
1K
 by 45Frank
More horsepower
6
1K
 by Linusridesred
flex fans...will they work on our trucks?
3
2K
 by Dmaxcc6spd
2004 Envoy 4.2 Lack of power while warming up and..
2
376
 by Rocket Dawg
After market motor mounts
0
319
 by Kylep
Front lower engine oil leak?
4
3K
 by falcon8667
Rough shut down
4
684
 by TB-Al
Fuel Filter Question
1
236
 by EnvoyBoy2004
I6 to 6.7L LQ4 with standalone fuel/spark?
3
847
 by robpreuss
4.2l I6 help
0
247
 by Zlambz71
still overheating
11
2K
 by 45Frank
2006 envoy rod bearings
0
198
 by Jdiggitydogg1
Range AFM vs Diablo Sport S1000 AFM Disabler
0
237
 by Carguy1985
Strange idle after hard drive? Anyone had this before?
5
590
 by EnvoyBoy2004
Jackson Mississippi
5
378
 by red99ryder
TB stalled and now hesitates at times, threw multiple codes
0
180
 by jmykrantz
Throttle body spacer?
2
635
 by ShAkEsLs
05 Trailblazer I6 engine oil leak
0
251
 by billwhitehouse
Coil on plug question...
12
1K
 by 05Base
Fuel smell when parked in garage
0
269
 by Lynchy
2003 Envoy Codes
12
1K
 by TJBaker
How can MPG tuning possibly work?
4
842
 by RPatton76
How To Decrease Noise?
2
611
 by LoloMike
What Additives Do you Recommend for The 4.2L Inline ^
2
659
 by Lynch
Replacing Valve Cover gasket!
17
38K
 by gopherfan
Engine Tunes/Mods Performance Engine Tuning/Engine Modifications
21K posts
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