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Maggie’s Funny & awesome pics, vids and memes thread (work safe, no nudity)
- By Lawless
- The Bear Pit
- 112137 Replies
So y’all remember I was “turning up” my 12v cummins a few weeks ago. I took the AFC off several times experimenting with it. The following is considered mild in that world but my results were pretty incredible.
What I ended up with:
#11 fuel plate, slid full forward. Fuel plate only is in play at full throttle and after boost is up fairly high. #11 is a safe plate, safer than factory slid forward … but still allows more fuel and boost up until the peak where it will sign off instead of sending EGT through the roof like a stock or a more aggressive plate like a #10 or zero.
Boost elbow to slow the wastegate opening. Don’t just block it, it needs to slowly open at high boost to keep your turbo from melting
AFC housing slid full forward. The main reason to slide the plate and the AFC full forward is because if you pull any of it back off, you have a reference and don’t have to start over with the fine settings.
I removed 1/8” from AFC arm barrel and removed the lip from the washer on the bellows. This allows full rack travel.
I found the stock spring is too short to control low boost if the star wheel is forward enough to make mid range torque. The spring being too short doesn’t allow the low boost control you need for fast spooling. So if you do any of this, don’t even start until you buy a longer aftermarket spring or plan to stretch yours.
Experimented with the “smoke screw” to get low boost fuel right and have a quick spool up. You have to sneak up on this by 1/8 turns but the result is awesome when you hit it.
Governor springs. Stock, the pump de-fuels starting around 2000 rpm. What this does is if you're towing, getting up to speed on a ramp, the truck falls on its face if you hold a lower gear. If you shift up there may not be enough torque to accelerate. Replace springs with 3k or 4k springs to allow the truck to make power above 2400 RPM. I used 4k because it is an auto and It would never rev that high unless I held it in gear. Valve springs are mandatory for 4k springs in a manual.
Working on this has been fun. It is amazing this fully mechanical system is so sophisticated yet simple to work on. The “P” pump is a marvel.
My truck absolutely leaps now at any RPM or boost. Smoke is minimal and only even visible at no boost heavy throttle and only a couple of seconds, more like a haze than smoke….I hate heavy smoking diesel retards.
No electronic controls yet just pulled a hand calculated 22.87 MPG …. part of which was going over Black Mountain on I40 is pretty damn incredible.
Anyway, here is a cool pic of the “brain” of a 94-98 12v, a genius brain at that.
What I ended up with:
#11 fuel plate, slid full forward. Fuel plate only is in play at full throttle and after boost is up fairly high. #11 is a safe plate, safer than factory slid forward … but still allows more fuel and boost up until the peak where it will sign off instead of sending EGT through the roof like a stock or a more aggressive plate like a #10 or zero.
Boost elbow to slow the wastegate opening. Don’t just block it, it needs to slowly open at high boost to keep your turbo from melting
AFC housing slid full forward. The main reason to slide the plate and the AFC full forward is because if you pull any of it back off, you have a reference and don’t have to start over with the fine settings.
I removed 1/8” from AFC arm barrel and removed the lip from the washer on the bellows. This allows full rack travel.
I found the stock spring is too short to control low boost if the star wheel is forward enough to make mid range torque. The spring being too short doesn’t allow the low boost control you need for fast spooling. So if you do any of this, don’t even start until you buy a longer aftermarket spring or plan to stretch yours.
Experimented with the “smoke screw” to get low boost fuel right and have a quick spool up. You have to sneak up on this by 1/8 turns but the result is awesome when you hit it.
Governor springs. Stock, the pump de-fuels starting around 2000 rpm. What this does is if you're towing, getting up to speed on a ramp, the truck falls on its face if you hold a lower gear. If you shift up there may not be enough torque to accelerate. Replace springs with 3k or 4k springs to allow the truck to make power above 2400 RPM. I used 4k because it is an auto and It would never rev that high unless I held it in gear. Valve springs are mandatory for 4k springs in a manual.
Working on this has been fun. It is amazing this fully mechanical system is so sophisticated yet simple to work on. The “P” pump is a marvel.
My truck absolutely leaps now at any RPM or boost. Smoke is minimal and only even visible at no boost heavy throttle and only a couple of seconds, more like a haze than smoke….I hate heavy smoking diesel retards.
No electronic controls yet just pulled a hand calculated 22.87 MPG …. part of which was going over Black Mountain on I40 is pretty damn incredible.
Anyway, here is a cool pic of the “brain” of a 94-98 12v, a genius brain at that.
Maggie’s Funny & awesome pics, vids and memes thread (work safe, no nudity)
- By Lawless
- The Bear Pit
- 112137 Replies
Aldi had Waygu ground beef on sale for $4.99, made burgers last night and they were pretty good.
Now THIS is FUNNY!!!!
- By lash
- The Bear Pit
- 83 Replies
May cause a bleedin’ ‘eart, desire to eat a bullet, continuous bloviating, inability to accept others’ opinions, compulsive denigration of others, messiah complex, piss in your cereal or anal bleeding upon dismount.
Ask your doctor about Fuckitol today.
Maggie’s Funny & awesome pics, vids and memes thread (work safe, no nudity)
- The Bear Pit
- 112137 Replies
So what you were really saying is that a 5-year old got you!
Don’t blame the object for what the anklebiter did to you!
Sirhr
