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Old Jul 10, 2022 | 12:50 PM
  #1  
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Hydra problems

Just installed a Hydra tuner on my e99. First test run everything worked great, cycled through a few of the DD tunes I downloaded, pretty excited about the results.

Next day I go out to start it up and no wait to start light. Try a few times, get a light, fire it up and start driving. If I'm on stock tune "00" everything is fine, as soon as I click over to any tune on the chip the truck dies and will not start unless I go back to 00.

Assuming I messed up install and need to reclean the computer mating surface, though wanted to get any feedback about other issues I should look at. Planning on contacting PHP tomorrow too.
 
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Old Jul 10, 2022 | 01:57 PM
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Maybe hydra isnt making good contact. Also make sure you have correct base files for tunes.

Also

With going to and from 00

Truck off, cycle key to on put tune to 00 let blink, cycle key off, then start truck.
and vise versa if it on on 00 key on go to desired tune, blink, key off. Then start truck.
 
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Old Jul 10, 2022 | 02:19 PM
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X2 on what ESwift said. I'm not sure how you were even getting it to switch to or from 00 while running. Mine will just blink a few times and go back to previous setting. Also the E99 PCM are kind of their own animal, so the tunes have to match the hex code and no switching between hex codes while running. That will usually kill the engine and I've heard run the risk of damaging the PCM.
 
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Old Jul 10, 2022 | 03:14 PM
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Clean chip better. Use a pick tool and scrape between the pins on both sides of the board.

A poor connection can fry your PCM.
 
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Old Jul 10, 2022 | 06:18 PM
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I didn't catch anywhere about the steps for going from 00 to 01 and up, thanks for that heads up.

Pulled PCM out again and re-cleaned the mating area, this time taking off the bottom cover as well as top cover, which was siliconed together and took a little work to break apart. Was able to brush it and used acetone.

On the next test run was able to cycle through the tunes and so far so good. Fortunately no signs of frying the computer.

Thanks for suggestions and help.

Does anyone know how much of the tunes, like Daily Driver 65, has to do with changing the TPS vs other parameters? Wondering if the tune is just tricking the PCM to think I'm hammering the go pedal when I am just in it a bit.
 
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Old Jul 10, 2022 | 08:17 PM
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The PHP tunes all use the full travel of the throttle pedal.

The toons that give 100% throttle at 50% pedal are annoying and were common among early tuners.
 
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Old Jul 10, 2022 | 09:47 PM
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Aggressive throttle tip in can be a problem with tunes. My DP tunes are kinda touchy, but I got used to it.

If tip in is too aggressive in all tunes you may be able to get the tunes revised to dial it down.
 
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Old Jul 10, 2022 | 10:42 PM
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Originally Posted by aawlberninf350
Aggressive throttle tip in can be a problem with tunes. My DP tunes are kinda touchy, but I got used to it.

If tip in is too aggressive in all tunes you may be able to get the tunes revised to dial it down.
Yeah, it will take some getting used to. I have accidentally broke the back tires loose several times in the first day of driving a tuned truck, being used to the old unresponsive pedal. It's a good problem to have I guess. I just figured out too that what I thought was a 65hp tune was actually only the 45hp. Apparently I haven't even tried the 65 yet. Crazy the difference tunes make.

​​​​​
 
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Old Jul 11, 2022 | 12:28 AM
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Originally Posted by udsuth78
X2 on what ESwift said. I'm not sure how you were even getting it to switch to or from 00 while running. Mine will just blink a few times and go back to previous setting. Also the E99 PCM are kind of their own animal, so the tunes have to match the hex code and no switching between hex codes while running. That will usually kill the engine and I've heard run the risk of damaging the PCM.
Ok now I'm confused and unfortunately I'm not surprised bcuz the guy who owns the shop where I bought and had him install my hydra chip didn't tell me anything about it. Until I had a problem right after installing it(because the chip came unplugged from my PCM. He actually told me over the phone to go back to stock setting(I didn't even know which setting it was. I was able to change to and from stock setting while driving without any issues. Why is that and what is the reason for needing the engine off as you've stated? My truck: 2000 F350 Lariat, cc, sb 4x4 7.3L automatic transmission that was rebuilt with all new gears(steel's) and stage 2 clutch packs and a shift kit, all stock otherwise except for an open air filter from Clay @ Riff Raff Diesel(HIGHLY recommend) I've only got 6 custom programs so far. I tow a 14ft dump trailer along with my Kubota SSV75 skidsteer often as well.


 
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Old Jul 11, 2022 | 01:29 AM
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Originally Posted by Hammer&Nails
Ok now I'm confused and unfortunately I'm not surprised bcuz the guy who owns the shop where I bought and had him install my hydra chip didn't tell me anything about it. Until I had a problem right after installing it(because the chip came unplugged from my PCM. He actually told me over the phone to go back to stock setting(I didn't even know which setting it was. I was able to change to and from stock setting while driving without any issues. Why is that and what is the reason for needing the engine off as you've stated? My truck: 2000 F350 Lariat, cc, sb 4x4 7.3L automatic transmission that was rebuilt with all new gears(steel's) and stage 2 clutch packs and a shift kit, all stock otherwise except for an open air filter from Clay @ Riff Raff Diesel(HIGHLY recommend) I've only got 6 custom programs so far. I tow a 14ft dump trailer along with my Kubota SSV75 skidsteer often as well.

I couldn't say for sure, maybe it's something with my custom tunes for single shot injectors or it's an E99 402 pcm thing. I honestly don't know, but I do know it will not switch from a tune to factory 00 while the engine is running. There is a unmistakable difference in an engine with singles running split programming so no chance of mistaking if I'm running stock or tuned. Are you certain that it is actually resetting to stock and not just displaying a 00?
 
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Old Jul 11, 2022 | 06:18 AM
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Originally Posted by Hammer&Nails
Ok now I'm confused and unfortunately I'm not surprised bcuz the guy who owns the shop where I bought and had him install my hydra chip didn't tell me anything about it. Until I had a problem right after installing it(because the chip came unplugged from my PCM. He actually told me over the phone to go back to stock setting(I didn't even know which setting it was. I was able to change to and from stock setting while driving without any issues. Why is that and what is the reason for needing the engine off as you've stated?
The chip/switcher will display ‘00’, but does not go into that tune until you cycle the key.

It’s common for tuners to make the #1 setting on the chip ‘stock’ (or ‘modified stock’ for single-shot injectors) - so what you thought was ‘bypass’ or 00, was actually your #1 tune.

It’s similar for Ns (no start). The chip will display that, but it doesn’t go into or out of that tune until you cycle the key.
 
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Old Jun 27, 2025 | 08:07 PM
  #12  
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E350 PSD 4x4 Hydra Help Required

Hi all.. I've got an 02 E350 PSD 4x4 with a ZF5 & GearVendors, 9" lift,
The Beast
The Beast
new turbo, hpop, rail bypass & 160cc single shot injectors, 3.73 & 37x13.5.. the Hydra was installed by my 4x4 builder & I'm having lots of problems.. starting with idle surge at 00, going thru the installed tunes brings on lots of weird stuff, with erratic behavior and she's completely undrivable.. I can drive her on 00 but with the manual tranny she occasionally bucks to the point of being dangerous.. uncontrollable.. ugh.. I'm looking for a little guidance on where to attack this problem.. being in Montana kinda leaves me on my own to sort this out..
cheers
 
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Old Jun 27, 2025 | 11:16 PM
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Originally Posted by Ebiketoter
Hi all.. I've got an 02 E350 PSD 4x4 with a ZF5 & GearVendors, 9" lift,

The Beast
new turbo, hpop, rail bypass & 160cc single shot injectors, 3.73 & 37x13.5.. the Hydra was installed by my 4x4 builder & I'm having lots of problems.. starting with idle surge at 00, going thru the installed tunes brings on lots of weird stuff, with erratic behavior and she's completely undrivable.. I can drive her on 00 but with the manual tranny she occasionally bucks to the point of being dangerous.. uncontrollable.. ugh.. I'm looking for a little guidance on where to attack this problem.. being in Montana kinda leaves me on my own to sort this out..
cheers
Great looking van.
Makes sense that it has odd behavior in "00" as you now have single shot injectors. The throttle should be touchy, odd idle , etc.
Sounds like maybe you don't have the proper pcm code tunes for your van.

I'd suggest hooking the hydra to hydraflash an verifying everything. Did the van come with a ZF5 or was it swapped in? I'm not familiar with vans but typically an 02 7.3 is mated with a ZF6...just trying to makes sense of things.
 
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Old Jun 28, 2025 | 12:18 AM
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Thanks for your prompt reply.. the Beast originally was an auto trans, originally I had bought a ZF6 kit for the conversion but I was sold a 2wd.. ugh!! So rather than send it to be converted for a transfer case i found the 7.3 ZF5 / transfer case with the GearVendors o/d presently installed..
being a newbie with 7.3's i speced out & bought tons of kit..most worked out great but I still have a couple wrinkles to iron out...
any gentle nudges in the rite direcction will be greatly appreciated..
The good is I know the value of following step by step procedures...
can I get some suggestions on which tunes to load??? Besides that I will be discoing all the existing hydra install & reinstall per manual..


So i do laser scanning & 3d design work.. heres some scans of The Beast... ta da!!!
So i do laser scanning & 3d design work.. heres some scans of The Beast... ta da!!!
 
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Old Jun 28, 2025 | 02:47 PM
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Okay, so if the van was an auto and converted; you would have to have custom tunes made for it. I think this is where your issue is coming from. We converted my buddys truck to a ZF6. I can't remember but I had to tell the tuner to tune it a special way. The reason being is that the PCM is for an automatic and thinks it's still an automatic... Unless you put in a manual PCM. then I don't know where that puts things.
I just have a general knowledge.

so...let's back up a moment. are you using the auto PCM? and the tunes you have now; are they for your 160 injectors and where did you get them or whos tunes are they.

The stuff with the drawings is cool but way above my little pea brain. looks like a lot of fun. At one time I would have loved a 4wd 7.3 van but they are hard to come by and super expensive here. just a van with a 7.3 is hard to find. That would be an option as well as it could easily be converted to 4wd I think. I know the trucks are easy enough

I'm also not sure if it would be best to start your own thread or not. I feel like this is more of a compatibility issue rather than hydra/ tuning. I also think a buil thread of this project would be cool and fun to follow
 
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