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Old 11-16-2009, 04:15 PM   #1
Element Tuning
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Default Element Tuning Hydra EMS 26, Cosworth 2.5 STi Engine, GT75 629 WHP

Event: Phil Grabow Hydra EMS Tune
Location: Element Tuning, Gaithersburg, Maryland
Ambient Temp: 68.92 degrees
Elevation: Sea level
Weather: Raining
Track and Conditions: NA
Tires: Michelin Pilot


I wasnít really sure what to call this turbocharger as itís based off of what we call the GT75 but this is a GT series housing with a Garrett 75 lbs compressor wheel and a Tial 1.03 exhaust housing. This was changed from the FP HTA since that was damaged (oil seals).

We made a little more power on pump 93 hitting 524 whp up from about 503 whp. It did spool a little slower than the HTA but had more top end. Very impressive for pump gas especially on this dyno!

On VP Q16 power was very good. There was some boost taper and overall we wanted more boost but thatís all the WG had in it. Upon further inspection we pulled the WG apart to upgrade the springs and noticed the diaphragm was folded over so this could have caused some issues. Weíll get stiffer springs in there and turn up the boost!

Target boost will be 35 psi which this turbocharger should have no issues running. Tuning went well and power came easily with boost. So far no sign of detonation issues as boost was increased or any other difficult symptoms. We did have misfire issues the last time the car was on the dyno but that was corrected with very tight spark plug gaps.

Car: 2007 Subaru STi
Tuner: Phil Grabow, Element Tuning
Dyno Info: Dynajet
Peak HP at RPM: 629.02@7600 rpm Uncorrected
Peak Torque at RPM: 405.94@6600 rpm Uncorrected
Baseline: 08 WRX 184 whp Uncorrected
Target Boost: 25-28 psi
Target AFR: 11.3
Fuel: 93, VP Q16
Engine: Cosworth Long Block
Intake: Cosworth
Turbo: Element Garrett/Tial 75 lbs T3 1.03
Header: GT Spec?
Exhaust: 3Ē?
Fuel System: 1600cc, A1000 Fuel Regulator and pump
EMS: Hydra 2.6 Engine Management
Driveline Modifications: Exedy Triple
Suspension Modifications: Tein Coilovers

Again this setup has been similar to the other large turbochargers Iíve tuned with the Cosworth cams and or head package. It just doesnít like variable cam timing advance but really big turbochargers like this are all about the top end.

On the next runs I may push the RPM a little further if oil pressure looks ok. For now Iím limiting the engine to 8k rpm but clearly it will make power to about 9k rpm

Thanks,
Phil Grabow
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Old 11-16-2009, 06:01 PM   #2
Steve.804
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WOW on lots of different accounts. The power...and having 300ft/lbs of torque at 5400rpms But when you're reving that thing out past 8k who cars??

Is this vehicle your shop car? Customers? I assume racecar only? This would be quite the handful on the street
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Old 11-16-2009, 06:04 PM   #3
Element Tuning
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It's a street car for now and it's a customer car. She's definitely a screamer! Honestly it's too much power for this car's suspension and tires. LOL! I think an upgrade is definitely around the corner.
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Old 11-16-2009, 06:06 PM   #4
blowbyu24
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great looking graph phil

congrats to the owner must be a joy to drive...definitely not too much power for the street
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Old 11-16-2009, 06:13 PM   #5
Element Tuning
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Thanks but it's not enough power Stiffer WG spring it is! I think we should see about 700 whp when done unless the T3 exhaust housing results in too much back pressure. So far there were no signs of this so I'm optimistic that 35 psi should get us there.
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Old 11-16-2009, 06:15 PM   #6
juanmedina
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I can't imagine daily driving this
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Old 11-16-2009, 06:20 PM   #7
Element Tuning
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Why it's a pussycat up to 5k rpm
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Old 11-16-2009, 06:27 PM   #8
mashedpaters
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this thing screams above 5K. Any vids of the dyno by any chance? I'd love to see this start spooling
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Old 11-16-2009, 06:33 PM   #9
Element Tuning
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Maybe we'll work on that for the next pulls at higher boost.
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Old 11-17-2009, 10:34 PM   #10
CosworthSTI77
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Quote:
Originally Posted by blowbyu24 View Post
great looking graph phil

congrats to the owner must be a joy to drive...definitely not too much power for the street
Thank you, it is AWESOME and I have not even driven it on race gas yet ! Phil has done wonders with this car ! Will try to get some videos and a time slip here shortly of this beast !
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Old 11-17-2009, 11:23 PM   #11
moorebl
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post some pics of this beast
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Old 11-18-2009, 01:31 PM   #12
Illusive
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big turbo, big power. nicely done. for a street car though its a bit overkill for my tastes.
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Old 11-18-2009, 02:37 PM   #13
BUILTSTI
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your the only person that has no issues with hydra's....

strange
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Old 11-18-2009, 04:53 PM   #14
john 1badSTI
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^^^ I have never had a problem with any of the hydras I have tuned.
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Old 11-19-2009, 09:17 AM   #15
modaddict
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when are you hitting full boost in 4th gear?

Look like in this graph around 5800?

The boost threshold on that looks................less than optimal.
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Old 11-19-2009, 11:33 AM   #16
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Seems like you've contradicted yourself.

Quote:
Originally Posted by john 1badSTI View Post
^^^ I have never had a problem with any of the hydras I have tuned.
Quote:
Originally Posted by john 1badSTI View Post
I will chime in here and say that yes some of the early 2.17 boxes had a few issues but the 2.5(WHICH I RUN) and the 2.6 box are pretty much trouble free and are a very powerful ecu's.It all still comes down to the tuner to make an ecu as perfect at running the car as possible,bad tuner=****ty running car.
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Old 11-19-2009, 03:25 PM   #17
john 1badSTI
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no not really because they weren't major problems just small quirks do to the earlier software that just made it a little more time consuming to get the cold and hot start dialed in,other than that the cars ran fine.
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Old 11-21-2009, 07:31 PM   #18
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What kind of boost does it make in 1st or 2nd.. Awesome numbers no doubt, but hell I have seen 42r's with faster spool.

Doug
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Old 11-22-2009, 04:37 PM   #19
Element Tuning
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It's likely a combination of parts that increased the lag we have built similar setups that have spooled much quicker. I just have to work with what I've been given. I do my best to work with customer has and then recommend different parts if they feel an improvement needs to be made.

Just getting off the plane from Seattle after tuning multiple 600+ whp Subarus so we'll get those posts up soon. Our GT65 bolt on made over 450 whp on 92 octane with a car that didn't even have bigger valves which was very impressive at only 22 psi.

Now for me being the only person that doesn't have problems with Hydras to that I say we've sold thousands and really it's only a few tuners that really struggle and have consistent issues. I am the source and there hasn't been a car I've been flown in to sort that I haven't been able to. It's 99% of the time tuning issues. The Hydra has very advanced options and very high resolution so it takes more than an average tuner to make a difficult setup great. I'm always available to help guide tuners and when that is not enough I'm available to travel.

Thanks
Phil Grabow
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Old 11-23-2009, 07:46 PM   #20
rob58
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i have a hydra for sale anyone interested??
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Old 03-15-2010, 11:11 PM   #21
CosworthSTI77
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[IMG][/IMG]

This is what happens when a Cosworth head gasket blows ! Was told Cosworth gaskets are not as good as the oem gasket, it sure sucks having only 4000 miles on a longblock and this **** happening. And of course Cosworth won't stand behind their $15000.00 built engine ! Slight hydroloc also caused one connecting rod to be slightly bent, having to replace rods and block of course, thank god everything else is alright.
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Old 03-15-2010, 11:25 PM   #22
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who says cosworth gaskets aren't as good as stock?
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Old 03-15-2010, 11:51 PM   #23
modaddict
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Can you get a high resolution pic of the piston tops?

Looks like you may have had a massive lean spot?
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Old 03-16-2010, 12:01 AM   #24
juanmedina
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Lately Cosworth FTL
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Old 03-16-2010, 06:07 AM   #25
tino
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wow...

What head studs do they run 11mm??? looks like what happened to my engine with a blown headgasket took a chunk out of the block and the head.. both junked (not cosworth though)..
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