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Old 06-16-2007, 08:12 PM   #1
RixSTI
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Default Problem with accelleration+ Launch controll

06 STI with Hydra 2.5
Problem is the engine doesent accelerate smoothly when you press on the fuel pedal, what happens is theres a slight delay of about a second then all of a sudden the engine accellerates abruptly , makes it anoying especialy if your racing , and you realy feel it between shifts.

Second problem I have is the launch contral on my STI is now not working . Ive entered a value of 4000rpm , saved it to my laptop , then downloaded it to the Hydra ECM, but nothing happens , wont work. I dont think these 2 problems are related, cause my launch control was working fine before I had the Pro Tune done.And the hesitation was always noticable even before I had the Protune. Anyone have any thoughts??
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Old 06-22-2007, 11:39 AM   #2
Element Tuning
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Member#: 54918
Join Date: Feb 2004
Chapter/Region: MAIC
Location: Gaithersburg, MD
Vehicle:
673 WHP Element
Tuning Pro Comp Engine

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If this is an Element Hydra is the US, email me your map along with your mod list so I can look it over. We do not enable the deceleration fuel cut but instead tune the fuel map to fuel cut as using the decel cut when not tuned properly can make the car have a dead spot. It could also be another problem with installation or mechanical related.

Launch control only works if you purchase the Accessory Wiring Harness from us.

Give a call as I'm sure we could work through your problems a lot quicker that way.

Thanks,
Phil
www.elementtuning.com
240.246.0302
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Old 06-29-2007, 12:13 PM   #3
RixSTI
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Hi Phil, sent you a map and mod details , thanks for your support.
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Old 07-04-2007, 08:26 AM   #4
Element Tuning
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Member#: 54918
Join Date: Feb 2004
Chapter/Region: MAIC
Location: Gaithersburg, MD
Vehicle:
673 WHP Element
Tuning Pro Comp Engine

Default

Quote:
Originally Posted by RixSTI View Post
Hi Phil, sent you a map and mod details , thanks for your support.
Definitely problems with your map. I made some adjustments for you by correcting the settings and outputs that had been altered incorrectly. Hopefully this fixes your issues otherwise it will need to be tuned properly.

Thanks,
Phil
www.elementtuning.com
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Old 07-04-2007, 08:30 AM   #5
bearpaws1973
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06 wrx built to the hilt!

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Wow, that is great service, I'll have to consider the transaction that I just saw here and how quick it was taken care of when I look at a standalone system.
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Old 07-05-2007, 10:31 AM   #6
RixSTI
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Thanks Phil. Looking forward to getting the newly adjusted map in the mail.
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Old 07-07-2007, 04:51 PM   #7
RixSTI
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Got your edit to my map Phil, thank you so much for your time.
Unfortunatly the hesitation is still there after your edit, It seemed a little better but sill theres a flat spot when pressing down the fuel pedal between shifts , but alteast the launch control is working again. Il keep searching for the problem, maybe its the TPS sensor.
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Old 07-07-2007, 08:42 PM   #8
WhiteKnight
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Quote:
Originally Posted by RixSTI View Post
Got your edit to my map Phil, thank you so much for your time.
Unfortunatly the hesitation is still there after your edit, It seemed a little better but sill theres a flat spot when pressing down the fuel pedal between shifts , but alteast the launch control is working again. Il keep searching for the problem, maybe its the TPS sensor.
Rix,

I have the same problem with my Hydra, i couldnt fix it, i tried almost everything in the hydra. Throttle response is laggy and hesistating..

Im suspicious about a mechanical problem, cams, valve leak, etc...

What mod do you have ?
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Old 07-09-2007, 01:34 PM   #9
Element Tuning
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Join Date: Feb 2004
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Location: Gaithersburg, MD
Vehicle:
673 WHP Element
Tuning Pro Comp Engine

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RixSTI,

I have never had this problem with an Element Subaru Hydra. I've seen similar things on large TB equipped cars but again never on a Hydra I've tuned, even with a large TB.

There are so many different types of hesitation, lean, rich, misfire, throttle delay, fuel cut delay, injector response, that I don't have enough information to really offer much advice that isn't a guess.

Running a datalog may shed some light on if it's rich, lean, or knock retard durning your shifts.

Thanks,
Phil
www.elementtuning.com
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Old 07-09-2007, 09:15 PM   #10
RixSTI
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My mods are pretty simple :3 inch APS catless turbo back / HKS header / K+N drop in filter / upipe with tiall 38mm EWG / and ofcourse the Hydra with launch control and widband.
Everything works great except for that flat spot between feuling the engine between shifts , Im sure one day il get it resolved , Im not giving up on the Hydra, its a great system , I just need to find in my area with good experience to look at my set up and tune.
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Old 07-09-2007, 09:17 PM   #11
RixSTI
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Phil.
Yes Il definatly data log . Hopefuly something will show up there.
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Old 07-10-2007, 10:31 AM   #12
Element Tuning
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Member#: 54918
Join Date: Feb 2004
Chapter/Region: MAIC
Location: Gaithersburg, MD
Vehicle:
673 WHP Element
Tuning Pro Comp Engine

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Quote:
Originally Posted by RixSTI View Post
My mods are pretty simple :3 inch APS catless turbo back / HKS header / K+N drop in filter / upipe with tiall 38mm EWG / and ofcourse the Hydra with launch control and widband.
Everything works great except for that flat spot between feuling the engine between shifts , Im sure one day il get it resolved , Im not giving up on the Hydra, its a great system , I just need to find in my area with good experience to look at my set up and tune.
Send me that data log but edit it down for me so I don't have to search through 800 lines of data

Your map had "decel cut" enabled which can cause that hesitation but I'm pretty sure I disabled that for you when I sent it back but just double check. Also a mechanical issue that can cause that dead spot is the BOV if it's sticking or sprung too softly.

Thanks,
Phil
www.elementtuning.com
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Old 07-11-2007, 08:43 AM   #13
RixSTI
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Sounds like a plan Il send you some trimmed down data log.And yes I noticed you removed decel cut.
Thanks again for the great support youve given me so far , Im realy happy and impressed.
Look forward purchasing other element products from you.
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Old 07-31-2007, 11:34 AM   #14
RixSTI
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Update on my crises with the Hydra, So far Phil has helped me with the launch control, it is now working fine.
Im still having problems with the acceleration lag or flat spot when accelerating from idle or 0***37; tps to about 10% .
I sent Phil proper data loging sample , just waiting for him to check it , and hopefuly help my situation out here.
Other than that Im happy with the Hydra and its capabilities .This is a BIG problem that needs to be resolved because it affects the way the engine performs , especially when racing, its almost impossible to race the car at this time.
Ive spent 1400$ in tuning costs at Neetronics tuning , and this is the result im left with , I think its definitely unfair. They know about this problem but have not been able to address it. Before sending my car there for tuning they also assured me that they where experienced with tuning the Hydra. So its not like this should have been an issue.

Last edited by RixSTI; 07-31-2007 at 11:40 AM.
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Old 08-01-2007, 10:18 AM   #15
Element Tuning
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Member#: 54918
Join Date: Feb 2004
Chapter/Region: MAIC
Location: Gaithersburg, MD
Vehicle:
673 WHP Element
Tuning Pro Comp Engine

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Unfortunately in our industry, everyone is an "expert."
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Old 08-11-2007, 04:31 PM   #16
RixSTI
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Im ready to send you my Hydra unit for a check up or testing , Il give you a call on monday. Thnx Phil. at element tuning.
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Old 08-24-2007, 11:09 AM   #17
RixSTI
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Sent the Hydra to Phil for testing , should be getting it today Friday Aug 24.
Now just waiting to hear the results.
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Old 08-24-2007, 11:12 AM   #18
sean18337
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Location: NY NJ PA
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2007 STI *SOLD*

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I have the 2.5 box for the 07 STI and my throttle response is incredible. I think its actually better then the stock ECU!!
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Old 08-28-2007, 05:26 PM   #19
Element Tuning
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Member#: 54918
Join Date: Feb 2004
Chapter/Region: MAIC
Location: Gaithersburg, MD
Vehicle:
673 WHP Element
Tuning Pro Comp Engine

Default

Quote:
Originally Posted by RixSTI View Post
Sent the Hydra to Phil for testing , should be getting it today Friday Aug 24.
Now just waiting to hear the results.
Unfortunately I don't have good news for you. I tested your unit on our 06 STi and it works as it should. I also tested the harness and that also appears to be fine. It's either a mapping issue or it's a mechanical issue with your car.

Thanks,
Phil
www.elementtuning.com
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Old 08-28-2007, 06:48 PM   #20
s_camm
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Red

Default Don't know where this fits in.. I had a different throttle problem

I'd appreciate a response to this, since I have only been driving for a few years now, and know very little about cars.. including my own- 2004 impreza 2.5TS.

When I was accelerating last week, the engine uncontrollably revved up- almost as though the pedal was stuck on the ground. Restarting the car only did the same thing (clutch in, foot off gas, tachometer at redline) I took it in, and the dealer said that the Throttle Control was dirty, and simply cleaning it fixed the revving problem.

Is this common? has anyone heard of this? and does simply cleaning it make it all better??? Thanks
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Old 08-28-2007, 07:01 PM   #21
Element Tuning
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Member#: 54918
Join Date: Feb 2004
Chapter/Region: MAIC
Location: Gaithersburg, MD
Vehicle:
673 WHP Element
Tuning Pro Comp Engine

Default

Quote:
Originally Posted by s_camm View Post
I'd appreciate a response to this, since I have only been driving for a few years now, and know very little about cars.. including my own- 2004 impreza 2.5TS.

When I was accelerating last week, the engine uncontrollably revved up- almost as though the pedal was stuck on the ground. Restarting the car only did the same thing (clutch in, foot off gas, tachometer at redline) I took it in, and the dealer said that the Throttle Control was dirty, and simply cleaning it fixed the revving problem.

Is this common? has anyone heard of this? and does simply cleaning it make it all better??? Thanks
I have actually seen this on both DBW and non-DBW cars. The problem with throttle bodies is that the plate has a very tight fit (friction) and when it gets dirty it can stick. The problem with the DBW setup is that the motor and spring are very week. With all the oil that gets sucked into the intake on the Subaru it's very easy for this to gum up with heat and dirt. Typically just scrubbing it out with carb cleaner and a brush will do the trick.

I have also seen someone jam their intercooler pipe in too far literally holding the throttle plate open slightly. Yikes!
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Old 08-30-2007, 11:43 AM   #22
Element Tuning
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Member#: 54918
Join Date: Feb 2004
Chapter/Region: MAIC
Location: Gaithersburg, MD
Vehicle:
673 WHP Element
Tuning Pro Comp Engine

Default

I dug into your map a little more and I may have found some mistakes in there. You have the Accessory Wiring Harness but not all your outputs were setup and I noticed a mistake on your crank triggers which could possibly explain this issue.

I've made the necessary changes to your map so just install it and test it for me.

Thanks,
Phil
www.elementtuning.com
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