So talked to a prior owner of my truck, and he informed me that there is actually a 5.3 in the truck, not the original 4.8 that I assumed was somewhat unmolested. So I realized that I've been running tunes for a 4.8 on the truck since I got it. I know I need to get it properly tuned (Allen you may get a call as soon as I finish up some maintenance) but my question is, is there any chance I may have hurt anything running a smaller engine tune on it?
Always buying things I dont need to impress people I dont know
Not enough of a difference to matter.
2006 SilveradoLittle Black Bitch
No long term fuel trims should have adjusted fueling. Not that big of a difference to cause any damage. Loss of MPG and HP yes but no damage.
99' Silverado RCSB Z71: 5.7L Iron LS1, 11.2:1, Custom EPS Cam, Ported 862's,Ported TB, E-Bay Cold Air, E-Bay Long Tubes, Dynomax X-Pipe Exhaust, Electric Fans, Innovative LC-1, Self Built 4L60E, Circle D Pro Single Disc, 4:10 ValueTrac
Good to hear. Thanks guys! Soon as I get these knock sensors replaced I'll have it retuned and see just how much more I get out of it.
more of a difference then you realize to be truthfulOriginally Posted by Frenchy
2002 Lightning - GT headed 5.5Litre w/ Twin 7665s
2002 Silverado - 427Lsx w/ Twin gt4202s
2010 Silverado crewcab Z71 - 5.3litre w/ procharger
2000 Wrangler - 5.3litre with some stance
2014 Xsport- 3.5 Eco boost
412 Motorsports
it ain't that I'm too big to listen to the rumors, It's just that I'm too damn big to pay attention to 'em..That's the difference
+1
Slowest in Oklahoma...
I agree it is a big difference because the Main VE, Cranking VE, Idle, and etc. tables are completely wrong. However, it is close enough for long term fuel trims to learn the fueling. Not good but no damage.
Last edited by country_3030; 01-25-2012 at 06:10 PM.
99' Silverado RCSB Z71: 5.7L Iron LS1, 11.2:1, Custom EPS Cam, Ported 862's,Ported TB, E-Bay Cold Air, E-Bay Long Tubes, Dynomax X-Pipe Exhaust, Electric Fans, Innovative LC-1, Self Built 4L60E, Circle D Pro Single Disc, 4:10 ValueTrac
right off the bat the cylinder volume is different which is going to throw all fuelin calculations. THis itself is very easily overlooked even in other tunes
2002 Lightning - GT headed 5.5Litre w/ Twin 7665s
2002 Silverado - 427Lsx w/ Twin gt4202s
2010 Silverado crewcab Z71 - 5.3litre w/ procharger
2000 Wrangler - 5.3litre with some stance
2014 Xsport- 3.5 Eco boost
412 Motorsports
it ain't that I'm too big to listen to the rumors, It's just that I'm too damn big to pay attention to 'em..That's the difference
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