OP, something like this with the smallest cam: https://www.texas-speed.com/p-5443-texas-speed-performance-gen-5-lt1-lt4-l83-l86-dod-delete-kit.aspx
Welp my truck just "dropped" a lifter
- Thread starter That John dude
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Would I need a tune with that kit? Or just slap it in, and go?
Sorry for all the questions I just want to do it correctly the first time.
You’re always going to need a tune when disabling & removing the DOD/AFM stuff. TSP may already have “canned” tunes for truck deletes like you’re planning… give them a call
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I hate gm
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I feel like I could have Denzel say, explain this to me like I'm a 6 y.o. AFM/DFM has been known for a decade, you decide you must buy a 2025 Chevy with a 6.2, no other, your car is disabled, dealer wants 10k to fix, now you want to sue the city for negligence?
And I'll say, "Yes, do I have a case."
He'll say, "Yes, yeah, of course you have a case. How's your back, any lower back pain, dizziness, nightmares...."
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Any chance this will improve on newer engines? 2023, 2024, 2025, 2026
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I didn't know they keep making the same junk. I thought afm was only a short period of time. You mean they still make this stuff today?
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I’m not the authority, maybe phased out this year?? Hoping so
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Looks like in 2019 they went to dynamic fuel management. Not sure if that means they did away with AFM completely or what.
What are they putting in, a brand new engine? seems like robbery. Ouch indeed.
But I bet with all the money he saved on gas he can easily afford that repair.
It’s a sad story! I have an 07 Hemi in my Jeep & worry about the same thing. On them lifter problems became a bigger issue when they went to variable valve timing Hemi in 09/10. The older ones like mine not so much I know people who’ve run up 200k+ with no problems. What I do is use Mobil 1 & change at 3000 miles. I know it sounds excessive but that’s only 2x a year for me.
BTW
I did a top end overhaul on my GM Marine 4.3 V6 about 6 years ago; had to replace the head gaskets & cyl heads due to overheat damage. I pulled out all the roller lifters and they & the cam lobes looked like new. At that time the engine was 29 years old & had about 1500 hrs on it. Marine use is much tougher than automotive as there is a single speed transmission and a 25 mph cruise puts you at a constant 3600 rpm. Old old GM tech; it this the best we can expect from new GM tech?
BTW
I did a top end overhaul on my GM Marine 4.3 V6 about 6 years ago; had to replace the head gaskets & cyl heads due to overheat damage. I pulled out all the roller lifters and they & the cam lobes looked like new. At that time the engine was 29 years old & had about 1500 hrs on it. Marine use is much tougher than automotive as there is a single speed transmission and a 25 mph cruise puts you at a constant 3600 rpm. Old old GM tech; it this the best we can expect from new GM tech?
If I understand DFM-you don't have the same set of 4 lifters shutting down.
This technology allows the engine to turn cylinders off when driving in situations that don't require full power, like cruising on the freeway. The DFM system's multiple cylinder-firing patterns are seamlessly mixed to meet the driver's requested torque while helping to balance fuel economy.
Not that it matters at this point but if you don’t mind sharing…
What oil (brand & weight) and oil change frequency?
And just how much fuel is saved vs the spectre of outrageous repair costs?
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I'm thinking it is a fleet number or that bad word, CAFE. Then we can play the "nobody buys a car these days" so who cares beyond 36 mos. Apparently many of us on this forum.
If things haven't changed the EPA only tests 15% of the vehicles where mfgs. self-report mpg numbers.
Perhaps what should be demanded by consumers of their elected officials, is to subject any and all EPA regs to cost/benefit analyses.
And yes I'm very serious about that. It needs to be done.
Then maybe someone can explain to me, just what is the benefit to me, in having to buy a calif emissions vehicle. Because I tell you that when it comes time to replace the cat converter, this is what I learned:
49 state $1,100
Calif emissions $3,800
now explain to me exactly what is the benefit, can you even measure it?
it is not fair, or right, for the public, to have no say what-so-ever in these issues.
I'll stop there, so as not to get political but you understand my feeling here.
And yes I'm very serious about that. It needs to be done.
Then maybe someone can explain to me, just what is the benefit to me, in having to buy a calif emissions vehicle. Because I tell you that when it comes time to replace the cat converter, this is what I learned:
49 state $1,100
Calif emissions $3,800
now explain to me exactly what is the benefit, can you even measure it?
it is not fair, or right, for the public, to have no say what-so-ever in these issues.
I'll stop there, so as not to get political but you understand my feeling here.
4WD
$50 site donor 2024
DFM has more combinations - I have a range plug-in on the 2017 AFM - but they are around $500 for DFM - I bought an extended warranty for the 2022 …
