Fine tuning a big single and 4r100

Mpoage · Nov 24, 2013

Well as some may know my buddy bought Josh Haddox's truck. It runs damn good and it is pretty easy to drive smoke free. It's definitely a lot better than a lot of people on here make it out to be. But we're just trying to get it fined tuned so when the track opens back up in January we are ready.

The problem were having is when the converter locks under wot even with boost it will still loose boost and fall on its face. Which I know that it is a very big single but from some of the videos I have seen of King Kong launching it does not have this problem and it looks as if the converter locks very early when launching. It also has the same transmission tune. I know there's not a lot of people that have had a setup like this but from the ones who have if you can offer any input as to what we can do to make it better that would be awesome. This will also serve as an update thread on what we have been doing with the truck.
Here's some videos.

https://www.youtube.com/watch?v=z90dKmxL6SA&feature=youtube_gdata_player

https://www.youtube.com/watch?v=-lrrXGSkkbY&feature=youtube_gdata_player

And here's the video of King Kong.

https://www.youtube.com/watch?v=e-63z9r6KAg&feature=youtube_gdata_player

extreme3807 · Nov 24, 2013

Check your PM and shoot me a message

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Super08Duty · Nov 24, 2013

Could be too much fuel at lockup. I've had the same problem with my truck on a heavy fuel tune. Granted mine is a 5r and this truck is a 4r, so they're not exactly the same. Wouldn't hurt running a lower pw tune to see if the charger is still getting choked out.

Dzchey21 · Nov 24, 2013

looks like lock up needs to happen at the same time it makes the 2-3 shift, the lock up happened at about 3300 rpm just guessing and it snuffed, the shifts and lock up needs to happen at 3700 or better

I agree on the fuel side make sure its not coal train smoking at full boost, if it is pull just a little back

Dzchey21 · Nov 24, 2013

looking again all the shifts need raised to 3700 or more, that single needs that much rpm to really work, even with a stock cam (not sure what josh put in it) the truck will make power to 4k

Jhaddox · Nov 24, 2013

Dzchey21 said:
looking again all the shifts need raised to 3700 or more, that single needs that much rpm to really work, even with a stock cam (not sure what josh put in it) the truck will make power to 4k

Still has a stock cam...never really tweaked it

And Matt. I think, not positive that that tune is limited at 3500 rpm...not positive

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Dzchey21 · Nov 24, 2013

either way I know my truck will make solid 800+ to 4200

Mpoage · Nov 24, 2013

Super08Duty said:
Could be too much fuel at lockup. I've had the same problem with my truck on a heavy fuel tune. Granted mine is a 5r and this truck is a 4r, so they're not exactly the same. Wouldn't hurt running a lower pw tune to see if the charger is still getting choked out.

Dzchey21 said:
looks like lock up needs to happen at the same time it makes the 2-3 shift, the lock up happened at about 3300 rpm just guessing and it snuffed, the shifts and lock up needs to happen at 3700 or better

I agree on the fuel side make sure its not coal train smoking at full boost, if it is pull just a little back

When it finally hits boost it clears up pretty good. But it does seem like it has to much fuel and is choking out when the converter locks.

Dzchey21 · Nov 24, 2013

I don't know what it has for engine tuning, but I would cut back say .1 ms pw and try again, it also could be underdriving the turbo and needs more fuel, just depends on what you define as cleans up pretty well. It should be a decent amount of smoke but not super thick and black.

extreme3807 · Nov 24, 2013

Should start clearing up around 70mph

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Mpoage · Nov 25, 2013

Dzchey21 said:
I don't know what it has for engine tuning, but I would cut back say .1 ms pw and try again, it also could be underdriving the turbo and needs more fuel, just depends on what you define as cleans up pretty well. It should be a decent amount of smoke but not super thick and black.

Its not super thick at all. It's really just a haze. But if you don't have any boost and you put it to the floor it will completely black out the road and you won't be able to see anything behind you. I believe it's a custom file from Eric based off of his extreme race tune.

extreme3807 · Nov 25, 2013

Mpoage said:
Its not super thick at all. It's really just a haze. But if you don't have any boost and you put it to the floor it will completely black out the road and you won't be able to see anything behind you. I believe it's a custom file from Eric based off of his extreme race tune.

The joys of a single. Just don't pull out in front of anyone, that truck ain't going anywhere for a minute lol

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Mpoage · Nov 25, 2013

extreme3807 said:
The joys of a single. Just don't pull out in front of anyone, that truck ain't going anywhere for a minute lol

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That's for damn sure. LOL

Dzchey21 · Nov 25, 2013

needs pre boost fueling pulled back, that will actually help it spool, it may need more fuel up top tho

Mpoage · Nov 25, 2013

Dzchey21 said:
needs pre boost fueling pulled back, that will actually help it spool, it may need more fuel up top tho

I really need to find an H&S so I can do these changes by myself.

But that would help it I think.

Super08Duty · Nov 25, 2013

Can't remember if Eric's xrace is a 2.3 or 2.2ms tune. But I do know how much it sucks when your choking the turbo out with ungodly amounts of fuel. Little tuning tweaks makes a world of a difference with the larger singles. Try a 2.0 or 2.1ms tune and see if the charger maintains consistent boost at lockup. Check the filter and filter minder as well just to be sure it's not being sucked in.

Mpoage · Nov 25, 2013

Super08Duty said:
Can't remember if Eric's xrace is a 2.3 or 2.2ms tune. But I do know how much it sucks when your choking the turbo out with ungodly amounts of fuel. Little tuning tweaks makes a world of a difference with the larger singles. Try a 2.0 or 2.1ms tune and see if the charger maintains consistent boost at lockup. Check the filter and filter minder as well just to be sure it's not being sucked in.

I believe it is a 2.25 ms tune. I'll try turning it to extreme Street and see if that helps some. I'll check that as well. Me and Nick also discussed some tuning tweaks for the transmission so I might try that first.

InnovativeDiesel · Nov 25, 2013

Why don't you just get a custom tune? The pre-programmed will run, but they are designed for a bolt on truck. I built those pre-programmed custom options to "work around" the various setup's, but that was before emailed custom tunes were available. I put a ton of time in making those pre-programmed tunes....back in the day. This was long before the tuning changes were as simple as they are now in the SCT software.

Mpoage · Nov 25, 2013

InnovativeDiesel said:
Why don't you just get a custom tune? The pre-programmed will run, but they are designed for a bolt on truck. I built those pre-programmed custom options to "work around" the various setup's, but that was before emailed custom tunes were available. I put a ton of time in making those pre-programmed tunes....back in the day. This was long before the tuning changes were as simple as they are now in the SCT software.

From what I understood from josh this was a tune you had tweaked but I guess it's not.