Hydra Chip Performance (disappointed) RESOLVED
Thread Starter
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Mountain Pass
Joined: Aug 2009
Posts: 134
Likes: 10
Hydra Chip Performance (disappointed) RESOLVED
****UPDATE - RESOLVED**** (See last post)
Stock 2002 7.3
35x11.50 tires, 3.73 gears
Hydra correctly installed (PCM hex matched etc)
Added Hydra, downloaded tunes, installed.
Very little noticeable improvement (using performance 80 hp in this example).
If I hammer it going up hill (around 45 mph) getting about 17.5 boost (Forscan Lite MGP PID).
I'll be honest, going from stock to 80 - there are times I wonder if I feel any difference at all.
Would this lead you to think something is amiss - or does it sound about right? I know I'm fighting the tires a bit but I really expected a more significant change in performance.
TIA!
Stock 2002 7.3
35x11.50 tires, 3.73 gears
Hydra correctly installed (PCM hex matched etc)
Added Hydra, downloaded tunes, installed.
Very little noticeable improvement (using performance 80 hp in this example).
If I hammer it going up hill (around 45 mph) getting about 17.5 boost (Forscan Lite MGP PID).
I'll be honest, going from stock to 80 - there are times I wonder if I feel any difference at all.
Would this lead you to think something is amiss - or does it sound about right? I know I'm fighting the tires a bit but I really expected a more significant change in performance.
TIA!
Lead Driver
Joined: Aug 2022
Posts: 5,057
Likes: 1,413
From: Oologah, OK
something is Definitely amiss.
'02 7.3 Excursion,
stock except for 6.0 ATF cooler up front,
ByPass oil cleaner,
the Hydra on 80hp mode, gets up and goes, fast...
the transmission shifts perfect.
used to use 65hp DD mode, but I like the 80hp mode for everyday driving a lot better.
the throttle response is very good, it takes off with the very first touch of the pedal, unlike when Stock no Hydra, I had to push it almost to the floor to get it to go.
when I tow, I use the 25hp Tow tune
'02 7.3 Excursion,
stock except for 6.0 ATF cooler up front,
ByPass oil cleaner,
the Hydra on 80hp mode, gets up and goes, fast...
the transmission shifts perfect.
used to use 65hp DD mode, but I like the 80hp mode for everyday driving a lot better.
the throttle response is very good, it takes off with the very first touch of the pedal, unlike when Stock no Hydra, I had to push it almost to the floor to get it to go.
when I tow, I use the 25hp Tow tune
Thread Starter
|
Mountain Pass
Joined: Aug 2009
Posts: 134
Likes: 10
something is Definitely amiss.
'02 7.3 Excursion,
stock except for 6.0 ATF cooler up front,
ByPass oil cleaner,
the Hydra on 80hp mode, gets up and goes, fast...
the transmission shifts perfect.
used to use 65hp DD mode, but I like the 80hp mode for everyday driving a lot better.
the throttle response is very good, it takes off with the very first touch of the pedal, unlike when Stock no Hydra, I had to push it almost to the floor to get it to go.
when I tow, I use the 25hp Tow tune
'02 7.3 Excursion,
stock except for 6.0 ATF cooler up front,
ByPass oil cleaner,
the Hydra on 80hp mode, gets up and goes, fast...
the transmission shifts perfect.
used to use 65hp DD mode, but I like the 80hp mode for everyday driving a lot better.
the throttle response is very good, it takes off with the very first touch of the pedal, unlike when Stock no Hydra, I had to push it almost to the floor to get it to go.
when I tow, I use the 25hp Tow tune
Laughing Gas
Joined: Apr 2016
Posts: 850
Likes: 114
From: Virginia
Sounds like you probably have some boost/exhaust leaks. Have the up-pipes been replaced? If they're the original, they're probably leaking. I'm running custom tunes and can hit 28-30psi with WOT on a daily driver tune. When I tried the PHP tunes, they also produced similar boost numbers.
That being said, it sounds like you may have other issues on top of potential boost leaks. Because when I first got my hydra, I was running 315/75/16 tires (roughly a 35 inch tire) and could tell a big difference in stock tuning vs any of the PHP tunes.
That being said, it sounds like you may have other issues on top of potential boost leaks. Because when I first got my hydra, I was running 315/75/16 tires (roughly a 35 inch tire) and could tell a big difference in stock tuning vs any of the PHP tunes.
Thread Starter
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Mountain Pass
Joined: Aug 2009
Posts: 134
Likes: 10
Sounds like you probably have some boost/exhaust leaks. Have the up-pipes been replaced? If they're the original, they're probably leaking. I'm running custom tunes and can hit 28-30psi with WOT on a daily driver tune. When I tried the PHP tunes, they also produced similar boost numbers.
That being said, it sounds like you may have other issues on top of potential boost leaks. Because when I first got my hydra, I was running 315/75/16 tires (roughly a 35 inch tire) and could tell a big difference in stock tuning vs any of the PHP tunes.
That being said, it sounds like you may have other issues on top of potential boost leaks. Because when I first got my hydra, I was running 315/75/16 tires (roughly a 35 inch tire) and could tell a big difference in stock tuning vs any of the PHP tunes.
And up pipes are likely stock.
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Lead Driver
Joined: Aug 2022
Posts: 5,057
Likes: 1,413
From: Oologah, OK
the Edge CTS-3 shows 17-18 max boost...
that is a computed number though, from the MAF, not a true Boost gauge reading.
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From: Houston, Texas
You may also want to monitor your ICP and IPR values to see what they are at WOT. You should expect to see anywhere between 2600-3000 psi. Any less and you may have a weak HPOP or questionable IPR.
Thread Starter
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Mountain Pass
Joined: Aug 2009
Posts: 134
Likes: 10
Top is 80 performance bottom is stock. Both going up a hill at WOT.
Thread Starter
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Mountain Pass
Joined: Aug 2009
Posts: 134
Likes: 10
Side note. When I was trying WOT in stock for comparison, I went to switch up to 80 and accidentally hit down (empty slot) and went NS and couldn't change it. Truck was in PATS and couldn't reset it. I fortunately had laptop with me and reprogrammed the chip. (I think I failed to select PATS when I programmed). But I also noticed that the HC controller wouldn’t turn off.
I got home and added 80 performance to 6th slot. Saved, disconnected, turned key on and momentarily went NS, and 6 wasn't there. Then cycled again and NS was gone and 6 was there. Through all of the the controller wasn't turning off absent me unplugging it.
I got home and added 80 performance to 6th slot. Saved, disconnected, turned key on and momentarily went NS, and 6 wasn't there. Then cycled again and NS was gone and 6 was there. Through all of the the controller wasn't turning off absent me unplugging it.
Lead Driver
Joined: Aug 2022
Posts: 5,057
Likes: 1,413
From: Oologah, OK
Side note. When I was trying WOT in stock for comparison, I went to switch up to 80 and accidentally hit down (empty slot) and went NS and couldn't change it. Truck was in PATS and couldn't reset it. I fortunately had laptop with me and reprogrammed the chip. (I think I failed to select PATS when I programmed). But I also noticed that the HC controller wouldn’t turn off.
I got home and added 80 performance to 6th slot. Saved, disconnected, turned key on and momentarily went NS, and 6 wasn't there. Then cycled again and NS was gone and 6 was there. Through all of the the controller wasn't turning off absent me unplugging it.
I got home and added 80 performance to 6th slot. Saved, disconnected, turned key on and momentarily went NS, and 6 wasn't there. Then cycled again and NS was gone and 6 was there. Through all of the the controller wasn't turning off absent me unplugging it.
Went thru the Programming a 2nd time, and set it to PATS, and after that it works as it should.
Thread Starter
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Mountain Pass
Joined: Aug 2009
Posts: 134
Likes: 10
I going to start over today and try some other tunes and see if I can get any different results. So far the truck feels the same no matter what I do.
Thread Starter
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Mountain Pass
Joined: Aug 2009
Posts: 134
Likes: 10
I just ran it 3x (rolling start 23 mph, flat / straight stretch, WOT for 9 seconds) in stock, 100 performance and 80 towing.
Results were almost identical. Top speed was 57 give or take. Boost was high 16s (MGP). Shifting was nearly identical.
Results were almost identical. Top speed was 57 give or take. Boost was high 16s (MGP). Shifting was nearly identical.
Lead Driver
Joined: Aug 2022
Posts: 5,057
Likes: 1,413
From: Oologah, OK
been a couple years ago, but I remember testing the different settings, and it would hit 80 mph pretty quick.
my Edge CTS-3 has a monitor setting that I ought try out,
it will Log and let you save to an SDcard, the results of speed tests like that.
but, a SWAG, is that from 10-15 mph to 80 happens pretty fast with the 80hp tune.
No where around my home where I can try that w/o attracting unwanted attention.
Wish I had seen your post this morning, I went to town and back, and there are several straight line places on the US-hwy where I could have tried that out....
I know it will hit 100mph if I don't get off the throttle.