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post #1 of 24 (permalink) Old 10-06-2008, 12:51 AM Thread Starter
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Hybrid tuning questions

I just finished the valve springs, prods, and hybrid install early today. Cranked the motor with glow plugs out to get the rest of oil that did not spray my a$$ while centering the pistons to change valves.

Started up pretty quickly, faster than I thought, and idles pretty rough and dies.

My question is, I have found and bought tuning for hybrids, but should the truck run on spilt shot stock tuning, or is the tuning the only issue? I hope that with the single shot tuning it will smooth out.

Thanks for any input

2008 F-250 SCLB Larait.


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post #2 of 24 (permalink) Old 10-06-2008, 12:57 AM
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Re: Hybrid tuning questions

The engine shouldnt die on split shot programming. It should still run but it is normal for it to run rough on split shot programs. (Lopey Idle) Is the check engine light on?

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post #3 of 24 (permalink) Old 10-06-2008, 01:05 AM Thread Starter
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Re: Hybrid tuning questions

No cel. I don't know, maybe I didn't give it time to get the air all worked out.

It seems like it cranks for a long time, until the oil pressure gauge comes up, before it starts to fire, if that means anything.

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post #4 of 24 (permalink) Old 10-06-2008, 01:10 AM
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Re: Hybrid tuning questions

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Originally Posted by moore20017.3 View Post
No cel. I don't know, maybe I didn't give it time to get the air all worker out.

It seems like it cranks for a long time, until the oil pressure gauge comes up, before it starts to fire, if that means anything.
I think that if you have a a long crank still then you have air in the system. I would go out and drive the truck for like 20 miles or so to work out all the air. When the truck starts up normally (normal crank time) then you know all the air is out. I think if you drive the truck it will get the air out faster than if you just idled the truck.

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post #5 of 24 (permalink) Old 10-06-2008, 01:15 AM
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Re: Hybrid tuning questions

3 or 4 full throttle pulls through the gears and the air will be 99% gone. The injectors have to consume the air. If you don't get them moving some oil the air will sit there forever.
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post #6 of 24 (permalink) Old 10-06-2008, 01:19 AM
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Re: Hybrid tuning questions

Truck should run on the stock tuning, just idle kinda funny and have a weird feel to the pedal. Like chuck said, you gotta go drive it to get the air out, just idling around or driving lightly wont do it.
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post #7 of 24 (permalink) Old 10-06-2008, 01:19 AM Thread Starter
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Re: Hybrid tuning questions

So it should run on the stock spilt shot tuning, is that the consensus?

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post #8 of 24 (permalink) Old 10-06-2008, 01:52 AM
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Re: Hybrid tuning questions

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Originally Posted by moore20017.3 View Post
So it should run on the stock spilt shot tuning, is that the consensus?
Yeah it won't hurt anything

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post #9 of 24 (permalink) Old 10-06-2008, 02:00 AM
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Re: Hybrid tuning questions

Well, as long as you're not flooring it on the split tuning it won't hurt. But depending on the nozzles, when combined with the timing in that split-shot tuning it could very well hurt something.

But as far as just running the truck like what everyone is talking about, it's fine. I just wouldn't go out and run the sh*t out of it with split programming. As I said, it will have much more timing because it was written for an injector with a pilot shot which your hybrids almost certainly don't have.

Good Luck.
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post #10 of 24 (permalink) Old 10-06-2008, 02:10 AM Thread Starter
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Re: Hybrid tuning questions

100% (.0085'') nozzles. Should I just wait on the tunes to get here or what. I was going to take the wifes ex to Alabama this week and let her drive the truck, but she will floor it at each stop light just to see how fast she can stop. .

I will have to drive my fukkin explorer, her old one, I guess.

2008 F-250 SCLB Larait.


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