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6.2L (L9H) Owners - Get all your questions answered here

RyanbabZ71
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DanMan_S
DanMan_S

This is a video showing how the 6.2L sounds with headers and a corsa catback. The crew cab is my 6.2L, the 2005 extended cab is a 5.3L with a magnaflow muffler welded in.    

gonzoid
gonzoid

finished product  

2010LTZ4x4
2010LTZ4x4

Where did you get the 6.2L badge in you avatar?  Heres the info for the 6.2L badge Top Flight Reproductions is proud to announce the addition of the 6.2L emblem to our emblem product line. This embl

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bird38 Enthusiast

bird38

Posted
Posted

Sorry, im actually an EFIlive guy. I just have hptuners because its popular with my friends and instead of having them try to converty efi to hptuners i just scanned the tune out of my truck.

 

 

If you have EFIlive scan tool i can post up some logs that i took while tuning.

CRSilverado Enthusiast

CRSilverado

Posted
Posted (edited)

Sorry, im actually an EFIlive guy. I just have hptuners because its popular with my friends and instead of having them try to converty efi to hptuners i just scanned the tune out of my truck.

 

 

If you have EFIlive scan tool i can post up some logs that i took while tuning.

 

Can you export them to a spread sheet so everybody can view? I tried to upload one mine but it wouldn't let me. You might try???

Edited by CRSilverado
CRSilverado Enthusiast

CRSilverado

Posted
Posted

How about a complete pass from zero up? Or do you mean what configuration do we want to see? Time, rpm, speed, tp, timing advance, kr, MAF (Hz), Engine and tranny temps., current gear, manifold vacuum and of course afr.

CRSilverado Enthusiast

CRSilverado

Posted
Posted

So bottom line about e85..is my 2011 6.2 quicker or slower on e85? Stock tune for now.

Based on what I see in the tune for my 2013 assuming yours is the same you will be slower on E85 without tuning.

super6 Enthusiast

super6

Posted
Posted

With the NHT pkg/ 3.73 & 9.5" rear end, anyone with this configuration on their L9H running Amsoil in front and rear diff? Did you see any jump in mileage?

 

 

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EX-F150 owner Enthusiast

EX-F150 owner

Posted
Posted

With the NHT pkg/ 3.73 & 9.5" rear end, anyone with this configuration on their L9H running Amsoil in front and rear diff? Did you see any jump in mileage?

 

 

Sent from my iPhone using Tapatalk

From gear oil :crackup:

super6 Enthusiast

super6

Posted
Posted

From gear oil :crackup:

Hey "ex-150", that is sorta what I was thinking, but wanted to ask. Thought I read somewhere a guy claimed 1mpg better. You use Amsoil in your diff's? Thanks.

 

 

'12 Sierra 4x4 SLT 6.2l 3.73(NHT)

BBP tuned.

EX-F150 owner Enthusiast

EX-F150 owner

Posted
Posted

Hey "ex-150", that is sorta what I was thinking, but wanted to ask. Thought I read somewhere a guy claimed 1mpg better. You use Amsoil in your diff's? Thanks.

 

 

'12 Sierra 4x4 SLT 6.2l 3.73(NHT)

BBP tuned.

I am still on all the original fluids, all but the engine oil. My truck only has 23K miles on it. I am running 0W-30 (Mobil One) instead of the 5W-30 that is recommended and I have not noticed any difference in MPG, but that was not the reason for me switching to this weight.

'01LS1 Senior Enthusiast

'01LS1

Posted
Posted

From gear oil :crackup:

 

It is the placebo effect of virtually every possible mod ever done to a vehicle after leaving the factory. From what I can tell, every mod adds 20 hp, but the debate is still between 1 OR 2 mpg improvement. Have seen forum posts(on other sites) where people were debating the effect of wax on mpg. Better wax, better mpg posts to boot. :nonod:

 

That said, have not changed the gear oil on the 2013, but when I did the 2007 dually some years ago, it was some ugly(factory)stuff coming out. Put Schaeffers back in & just did the semi a month or so ago. Small side note, neither showed ANY fuel mileage improvement but were due from a mileage standpoint. :thumbs:

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