My Single Turbo Experience

Jeff@Spartan

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Friday, uga33 and myself drove down to Lead Foot Diesel Performance to pick up their RC/LB 6.4 for the dyno day I hosted Saturday. A little background on the truck:

F-250 RC/LB XL
Single Garrett GTX4202 (MPD kit)
MPD log style manifolds
MPD up-pipes
150HP Nozzles
Twin K16 kit (Elite's kit)
Built SunCoast transmission
DPC torque converter
Spearco intercooler
Stock motor other than ARP studs and EGR delete

I drove the truck back home from Loganville, both highway and around town. I drove the truck Friday night at home around town. I drove the truck Saurday morning from home to the dyno day, which was about 40 minutes away, and I ran the truck on the dyno.

The tune loaded was a basic IDP Extreme Street file. All of the correct options in the Livewire were selected, but the file was an early lock-up file. It would lock the torque converter at 45 MPH. This wasn't fun. If I didn't use tow/haul, the truck was brutal between 0-50 MPH. Using tow/haul with this transmission file helped up to 50ish MPH. Beyond 50 MPH, it was terrible up to about 75-80 MPH. It would smoke like crazy if you accelerating, especially up a hill. Obviously the main reason for this was the big fuel and early lock-up file. Once the truck is at around 80 MPH, its about like driving my truck with the 310 tune.....unless you put it to the floor.

Oh yeah. The truck is stupid loud. It has a stack too, which doesn't help. It was definitely getting some attention around town. No one in my area is use to that. LOL

I think with some tuning, this setup could be SOMEWHAT streetable. Definitely a lot more streetable than my experience. I can see where proper tuning, a single, and added fuel could make for a daily driver setup. The key is the transmission tuning and pulling some fuel in certain spots to prevent the constant haze. This thing hazed at idle in gear and at idle in park.

As for the dyno, it made huge power. I think we made 5 or 6 runs with it trying to get the nitrous to work, but it never worked. Highest fuel only run was 888. The charger lit really good on that one. The lowest fuel only run was 812, but the charger didn't light well on that run. Needless to say, this is a really strong setup!

If anyone has any questions, feel free to ask. Just keep in mind that this was a basic IDP Extreme Street file with a 45 MPH lock-up speed.
 
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Pizza pig

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These setups really need custom tuning to be the most street able, and they benefit big time. No brainer if you ask me.
 

madman1234509

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whew... thats some pretty good power for sure. Do you know off hand what AR it had? Any idea how much nitrous is was set up for, or opinions on if it would have made over 1000 with it?

I know its a completely different setup but stories like this give me hope that my 66/88 setup with 100% nozzles will hit 1000hp.

Did you run your truck at all?
 

Lowdown89

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I have got to see it a couple times on the Dyno and its a badass truck for sure! I really don't think anything the boys at leadfoot builds isn't impressive
 

Jeff@Spartan

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whew... thats some pretty good power for sure. Do you know off hand what AR it had? Any idea how much nitrous is was set up for, or opinions on if it would have made over 1000 with it?

I know its a completely different setup but stories like this give me hope that my 66/88 setup with 100% nozzles will hit 1000hp.

Did you run your truck at all?

I'm not sure the exact specs on the turbo. The nitrous setup was a single stage with a .110 pill. If it had worked, it would have made over 1,000 I'm sure....if the turbo and/or motor held up. LOL

Yeah, my truck did 612...which seemed a little on the low side. With the same correction factory, my truck did 665 on a different Dynojet 248C. That was with 31.5" street tires, but I don't think it lost that much power because of the tires. Two other trucks with almost identical setups as mine made the same horsepower (one 610, the other 614).
 

MorganY

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Matt live tuned Coltons GTX4508R and it runs like a scalded dog. The dual ball bearing is the way to go. And the best part of a Garrett, built to last, even when beating it a few psi out of its map.
 

Super08Duty

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That truck should be easily streetable with good tuning. Not having a late lock tune with too much low boost fuel will make a single suck to drive around town. And yes they are a bit noisy.
 

bigrpowr

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That truck should be easily streetable with good tuning. Not having a late lock tune with too much low boost fuel will make a single suck to drive around town. And yes they are a bit noisy.

I still want to drive yours when it's healthy !!
 

BBottoms

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Two other trucks with almost identical setups as mine made the same horsepower (one 610, the other 614).

611!! That 610.8 rounds up! HaHa

If you didn't run a couple trucks before me I would have been worried about 611. Better than my last dyno but still not quite what I was expecting. Three nearly identical set ups within 5hp though puts me at ease about anything being wrong with the truck. That's all I was really shooting for by driving 350 miles LOL.
 

bigrpowr

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whew... thats some pretty good power for sure. Do you know off hand what AR it had? Any idea how much nitrous is was set up for, or opinions on if it would have made over 1000 with it?

I know its a completely different setup but stories like this give me hope that my 66/88 setup with 100% nozzles will hit 1000hp.

Did you run your truck at all?

If it doesn't , you were robbed.
 

08BIGRIG

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LOL Taillights were on for a good bit there before it lit. I am sure its streetable just not fun to drive for someone who likes the vgt compound setup. Two different worlds right there.
 

Craig@MFI

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You guys would be shocked if you tried a s475 and see how quick it spools against the gtx would feel like your going to Vgt again...
 

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