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Dirty Hydra tunes?

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296 views 15 replies 6 participants last post by  Greg687  
#1 ·
Hi folks,
A little while ago I installed a Hydra chip in my ‘99.5 7.3. I’m running pretty conservative tunes from the free PHP library (25 tow, 40 tow, 65 tow) with factory injectors. I wanted some more power for merging into the highway with my trailer, and PHP delivered. Truck runs fantastic and shifts great.
Recently, however, I got a letter in the mail from Colorado Air Pollution Control saying that a “concerned citizen” had reported my pickup as “emitting an excessive amount of black smoke”.
Now, the last thing I want here is to go around “rolling coal” and giving my fellow diesel owners a bad name. I have downloaded the correct tunes for my box/hex code, and my EGTs never get above 1300 or so pre-turbo here at 6500 feet of elevation. I’m running a brand new 6637 air filter.

I’ve attached some photos taken out of the passenger window to show you guys what I’m talking about. 1st pic is getting on the freeway at about 3/4 throttle with an empty truck. 2nd pic is accelerating from 10 mph with a 5500 lb trailer. Both times in the 65 hp tune. Naturally, a tuned 7.3 is going to be a little smokey, but is this a normal amount?
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owns 1999 Ford F250 Lariat
#2 ·
I'd call and talk to the folks at PHP and see what they say. My uneducated guess is that you need to push more air which may require a bigger turbo to cut that smoke down.
 
#3 ·
That's excessive smoke, unless you're on a real aggressive tune. Like bugman says, contact PHP and ask them about it.

I'm running DP Tuner's 80HP Econo tune, and I only see smoke with the go-pedal to the floor with a load behind and never that much. I had their more agressive 80HP Econo tune for a bit and it was too touchy with a 6 speed tranny, But I did roll some coal over a tailgater's windshield when he didn't back off. I traded that tune in for their Econo Classic version, and it's still plenty of power but with way less smoke. Any smoke is not so thick that it ever obscures what's behind me.
 
#4 · (Edited)
I’ll call PHP today and ask them about it. Towing 10k pounds, the smoke gets thick enough to obscure my view of the trailer in the passenger mirror. It does clear up to a steady haze once the turbo spools, but the tune seems to dump a lot of fuel down low. It’s not super aggressive either, just 65 tow. No boost leaks that I can tell, I max out right at 25 pounds on a WOT run with the wastegate tightened down.
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owns 1999 Ford F250 Lariat
#6 ·
I'm running OEM injectors with IH bellowed up pipes. EBP sensor looks good and the turbo is a GTP-38 with ATS ported housing and RiffRaff ported housing compressor wheel.
The girl at PHP said that tuned 7.3's are "naturally a bit smokey" and at higher elevations the lower oxygen levels would exaggerate this.

I'm tempted to leave it as-is since high EGT's don't seem to be an issue for me. But, I am curious if other folks running mild canned PHP tunes have similar experiences. My pickup runs great and shifts well. Thoughts?
 
owns 1999 Ford F250 Lariat
#7 ·
I just put on a kc gen 3 stage 1 in mine and it cleaned it up quite a bit. I have a cnc stg 1 hpop, kc gen 3 stage 1 turbo, all new sensors, ebpv delete, riffraff up pipes, mbrp ss 5 inch straightpipe, ford AIS filter, etc., etc., etc. Do you have a 5 inch straightpipe? what exhaust do you have? do you have a wicked wheel in your turbo? is your ebpv deleted?
 
#8 ·
My pickup has a 4" MBRP system now. As I stated, I'm running RiffRaff's ported housing wheel made special to work with ATS Ported Compressor housings. Riffraff Diesel Billet Compressor Wheel - Ported Housing.
Clay says that "This combination will allow for the highest airflow using your stock turbo." EBPV is not deleted, I quite like the faster warmup it helps provide. And no, it's not sticking shut...:)
 
owns 1999 Ford F250 Lariat
#10 ·
EBPV has been pretty useful for me; even have a custom hi-idle tune from DP Tuner that holds it shut regardless of ambient temp. It gets cold where I'm at, and I like having a warm heated cab when I leave the driveway in the morning. Plus, it can be used as an engine brake with various "decel" tunes.
 
owns 1999 Ford F250 Lariat
#13 ·
How would it restrict airflow if the sensor and the tube are both clean? Valve itself isn’t sticking shut either. If it restricted TOO much airflow, Ford/IH wouldn’t have put it on our trucks.
 
owns 1999 Ford F250 Lariat
#14 ·
Since your truck is tuned its a whole different ball game. You need as much air as possible. IF the valve is sticking you would never know it.
 
#15 ·
I definitely need more airflow to clean up the smoke. The reason I said my EBPV wasn’t sticking was because when it’s off, I can’t hear any “whooshing” noise, and while driving, my truck has plenty of power. During warm-up, the EBPV functions as it should. My EGTs are also very manageable, even while towing.

Honestly I’m tempted to leave it as-is, as EGT’s aren’t a problem and I just rebuilt my turbo.
 
owns 1999 Ford F250 Lariat
#16 ·
I have a Hydra with canned tunes. I never run tow tunes, but the 80 and 100 HP tunes are pretty clean. I had a tune previously that smoked a LOT, but it was from another company
 
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