[KW_DIESEL_MAN]

Yeah. My mirrors are LED too, I am an electrician, but man, car wiring is confusing.

I'm a heavy duty diesel technician and I can tell you from experience that these new vehicles today aren't your plane old school wire, switch, fuse, relay. Just and exaggerated story/example but here it goes. Wire starts at fuse then goes to the engine control module then back to the light switch then through the ignition then through 3 or 4 relays, that are scattered throughout the vehicle, then to the body control module then to the rear light and then finally to the puddle lights in the mirrors. And this complete circuit runs through 5 different wire harnesses.🥵🤣🤣🤣

 

[snakebitten]

I'm a heavy duty diesel technician and I can tell you from experience that these new vehicles today aren't your plane old school wire, switch, fuse, relay. Just and exaggerated story/example but here it goes. Wire starts at fuse then goes to the engine control module then back to the light switch then through the ignition then through 3 or 4 relays, that are scattered throughout the vehicle, then to the body control module then to the rear light and then finally to the puddle lights in the mirrors. And this complete circuit runs through 5 different wire harnesses.🥵🤣🤣🤣

Great post!
I'll only add that not only are all those "components" in play just to get the 12V current to the puddle light, but there's a substantial number of lines of code-logic at play as well.

Or put another way, on the latest vehicles the code can be overwritten with new code while you are asleep and the truck is parked in the driveway. The next day, without any new wires, relays, fuses, ever being touched, 12V current can be sent to the puddle light with completely different criteria.

Yesterday you had to unlock the truck to trigger the puddle light. But tonight you just have to approach it and when you are within 15' the light lights up and the running board deploys. Even though neither you or any technician has touched it since yesterday.

 

[boostkingMatt]

Here’s another fun video.

 

[TOWMA8R]

nice ^

 

[boostkingMatt]

Filled up with 5 gallons of Ethanol and the rest with 91 today.

I don’t know what to say except, I have to find a way to run it more often.

Truck made 45lb/min and it was such a joy to drive. It’s wildly fast and just wants to hang out in the higher Rpms.

 

[boostkingMatt]

For those wondering, my boost PID in my datalog configuration was incorrect, and I used manifold gauge pressure, and boost was 26.11 psi.

 

[Arkansas Eco]

I wonder if my engine would blow if I hit 26 instead of 15

 

[TOWMA8R]

I wonder if my engine would blow if I hit 26 instead of 15

Only one way to find out!!!!

 

[snakebitten]

His truck is now a tow-dedicated truck.
So even if he threw some money at tuning the beast, it's highly recommended to remove the performance tunes when towing. So I'm guessing he's not gonna bite. 🤣

 

[Arkansas Eco]

Good guess

 

[boostkingMatt]

I wonder if my engine would blow if I hit 26 instead of 15

That was with some wastegate though, when it’s completely shut, who knows, maybe 28 or 30?

 

[boostkingMatt]

His truck is now a tow-dedicated truck.
So even if he threw some money at tuning the beast, it's highly recommended to remove the performance tunes when towing. So I'm guessing he's not gonna bite. 🤣

Are you joking? Btw CRP told me these are the turbos that would be best for towing. 😂

 

[Arkansas Eco]

I won't need em til I need em !

 

[boostkingMatt]

It appears my boost PID is off on any number, because earlier it was 10 psi, but manifold gauge pressure said 14.3 psi once I converted it.

 

[bentruby]

Are you joking? Btw CRP told me these are the turbos that would be best for towing. 😂

Towing is most of the reason I tuned my truck in the first place.

BCB also told me stage 2 was the best choice for towing.

 

[snakebitten]

A tune specifically for towing is very different than what I meant when I stated:
"it's highly recommended to remove the performance tunes when towing"

Fellas chasing performance with Turbos and tunes and E85, 50, 40, 30..... Well, I don't think they are daily-ing a tow tune?

 

[boostkingMatt]

I think I forgot to mention it, but I did a 0-60 time the other day just on a random road, traction control off and advance trac off. I was in 4x4 and brake boosted it a little more this time, still not a super hard launch, and got 5.4 seconds. I think I could do it even faster, but I don’t really want to push my drivetrain too hard. My 0-30 was like just slightly over 2 seconds.

 

[Upshifter]

Matt do you have any insights on changes to mpg yet? Obviously not the top concern in a turbo swap, but I’ve been rather curious of the impact?

 

[boostkingMatt]

Matt do you have any insights on changes to mpg yet? Obviously not the top concern in a turbo swap, but I’ve been rather curious of the impact?

Yeah I do have some insights. I will say right off the bat, my mpg isn’t worse than before. On stock turbos and all tuned up, I was getting 16.5 mpg. On these turbos I’m getting 19 mpg. Why?
Here’s my theory. These big turbos take longer to spool up, so I can drive down the highway with less boost than before. In other words, the stock turbos efficiency was probably at its max with only 50-60% throttle and like 20 psi. These turbos have their most efficiency at much higher rpm so I think I’m burning less fuel, because I’m getting less air down low.

Before, on stock turbos, if I was going 30mph and I gave it 30% throttle I’d see like 25 or 26 lb/min.

On these big turbos, if I’m going 30 and I give it 30% throttle I only see like 20 or 22 lb/min.

But here’s the catch, it doesn’t feel any slower. I’m not sure if it’s because my torque is higher or what, but down low I’m making slightly less horsepower. But let me tell ya, up top, this thing is crazy.

On stock turbos it would pull really good off the line, and then when it got to 5000 rpm it would fall on its face and power would drop off.

On these turbos when it gets to 5000 rpm it pulls even harder. It does not drop off anymore. That’s why I was able to pull off a 6.3second 0-60 from a dig. Because up top it shaved off a lot of time.

Sorry, I got a little carried away in my answer to your question haha.

 

[butthead]

Yeah I do have some insights. I will say right off the bat, my mpg isn’t worse than before. On stock turbos and all tuned up, I was getting 16.5 mpg. On these turbos I’m getting 19 mpg. Why?
Here’s my theory. These big turbos take longer to spool up, so I can drive down the highway with less boost than before. In other words, the stock turbos efficiency was probably at its max with only 50-60% throttle and like 20 psi. These turbos have their most efficiency at much higher rpm so I think I’m burning less fuel, because I’m getting less air down low.

Before, on stock turbos, if I was going 30mph and I gave it 30% throttle I’d see like 25 or 26 lb/min.

On these big turbos, if I’m going 30 and I give it 30% throttle I only see like 20 or 22 lb/min.

But here’s the catch, it doesn’t feel any slower. I’m not sure if it’s because my torque is higher or what, but down low I’m making slightly less horsepower. But let me tell ya, up top, this thing is crazy.

On stock turbos it would pull really good off the line, and then when it got to 5000 rpm it would fall on its face and power would drop off.

On these turbos when it gets to 5000 rpm it pulls even harder. It does not drop off anymore. That’s why I was able to pull off a 6.3second 0-60 from a dig. Because up top it shaved off a lot of time.

Sorry, I got a little carried away in my answer to your question haha.

Sounds good. Do you check the vacuum on the highway and what it takes to into + PSI?
Mine on flat highway is -2 psi@55 MPH and 2000 RPM, 5th gear Throtle angle around 10% by 20% it is into + PSI. Seem you are in vacuum till a bit larger throtle angle. KM