Poor throttle response on MY06 STi
20 August 2007, 07:45 PM
#1
Poor throttle response on MY06 STi
After 3 months and 7k miles, I am now very very irritated by poor throttle response of the DBW when pulling away or reversing.
Its an all or nothing response that either leads to a near stall and kangerooing around or a sniff of clutch if a give it a bit too much revs.
Is this my own little problem or a "feature" of the hawkeye DBW?
If I took it to a dealer, what on earth would/could they do about this?
As the car will be remapped in the next month, is it something that can be mapped around anyway?
nick
Its an all or nothing response that either leads to a near stall and kangerooing around or a sniff of clutch if a give it a bit too much revs.
Is this my own little problem or a "feature" of the hawkeye DBW?
If I took it to a dealer, what on earth would/could they do about this?
As the car will be remapped in the next month, is it something that can be mapped around anyway?
nick
20 August 2007, 08:01 PM
#2
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2007 STI - throttle response issues - Factory 2.5L Turbo Powertrain - NASIOC
seems there is a fix for it in the States,my MD claims to have never heard of such issues
seems there is a fix for it in the States,my MD claims to have never heard of such issues
21 August 2007, 09:48 AM
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With DBW is the throttle assembly different, I presume it doesn't have a cable running to it..?
Just curious as an 06 spec c I've looked at recently seemed to have a cable operated throttle. Is this because it's a spec c or jdm..?
Just curious as an 06 spec c I've looked at recently seemed to have a cable operated throttle. Is this because it's a spec c or jdm..?
27 February 2008, 03:10 PM
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Nick,
Apologies for resurecting such an old post, but did you find out what caused this and find a remedy..? Any joy with the dealer..?
Nige.
Apologies for resurecting such an old post, but did you find out what caused this and find a remedy..? Any joy with the dealer..?
Nige.
27 February 2008, 05:04 PM
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Pat at Scoobyclinic understands/can fix this. Remapped mates 06STi and the response is fantastic now. The reason its deliberately mapped so slow from new is to pass stupid emission regulations.
27 February 2008, 09:56 PM
#7
Hi Nige,
I didn't find a cure. Even with a 2nd remap after porting the turbo, nothing could be done to stop the poor repsonse when pulling away or reversing.
The turbo port really helped with reponse at 2-3k revs though and I'd call it an essential mod.
The problem is worst after an ECU reset. There seems to be a learning period for the throttle.
D1CCY - Is the SC fix really for the rev range 750-1500 rpm or above?
Nick
I didn't find a cure. Even with a 2nd remap after porting the turbo, nothing could be done to stop the poor repsonse when pulling away or reversing.
The turbo port really helped with reponse at 2-3k revs though and I'd call it an essential mod.
The problem is worst after an ECU reset. There seems to be a learning period for the throttle.
D1CCY - Is the SC fix really for the rev range 750-1500 rpm or above?
Nick
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28 February 2008, 07:24 AM
#8
It can be mapped out.
There are a couple of tables in the ROM that relate to the requested torque values for various throttle positions versus rpm. The 07 STi has better values in here so it should be a simple cut and paste or if they are wanting to do a custom job on the map they can smooth them out by hand.
I am sure the mappers with Ecutek have access to these tables
Simple cure would be to launch at 2000 rpm though Butty
There are a couple of tables in the ROM that relate to the requested torque values for various throttle positions versus rpm. The 07 STi has better values in here so it should be a simple cut and paste or if they are wanting to do a custom job on the map they can smooth them out by hand.
I am sure the mappers with Ecutek have access to these tables
Simple cure would be to launch at 2000 rpm though Butty
28 February 2008, 09:04 AM
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Nick,
I've driven mate's 06STi after remapping at SC. Seemed very responsive to me at all engine speeds, should be with about 380 ft-lb!. Best to talk to SC if you have a particular concern, Pat Herborn is ususlly there Thursdays and Fridays.
Cheers, Diccy.
I've driven mate's 06STi after remapping at SC. Seemed very responsive to me at all engine speeds, should be with about 380 ft-lb!. Best to talk to SC if you have a particular concern, Pat Herborn is ususlly there Thursdays and Fridays.
Cheers, Diccy.
28 February 2008, 09:30 AM
#10
It can be mapped out.
There are a couple of tables in the ROM that relate to the requested torque values for various throttle positions versus rpm. The 07 STi has better values in here so it should be a simple cut and paste or if they are wanting to do a custom job on the map they can smooth them out by hand.
I am sure the mappers with Ecutek have access to these tables
Simple cure would be to launch at 2000 rpm though Butty
There are a couple of tables in the ROM that relate to the requested torque values for various throttle positions versus rpm. The 07 STi has better values in here so it should be a simple cut and paste or if they are wanting to do a custom job on the map they can smooth them out by hand.
I am sure the mappers with Ecutek have access to these tables
Simple cure would be to launch at 2000 rpm though Butty
28 February 2008, 11:15 PM
#14
Ecu Specialist
This can certainly be mapped out by adjustment of the throttle maps. the ecu learns fuel off boost, ign throttle and boost on boost (or rather anticipates) so a reset destroys its hard work. pat knows about the throttle mapping btw and if he mapped it he can sort. makes a big difference to the car drivability
cheers
bob
cheers
bob
28 February 2008, 11:24 PM
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Nick,
Regrettably, yes I am. It's a bit of a nightmare having to give it so much throttle just to pull off, especially if you're trying to sneak under the radar in a "D". I've stalled the damned thing a lot lately.
Got a few last ditch ideas to find out about whether or not i can get it to be like I want it to be before I decide to move it on. It's a rapid piece of kit and and on the move feels very quick and responsive, just not suited for me to skulk around town in or do my long motorway trips with "the bounce". Bit of a nightmare for me as I'm having the same trouble as before finding a performance car with four seats, a boot and that can tow...!!
Thanks for the info too Bob. The remap is something I'm seriously looking into now on this car, though I was hoping I wouldn't have had to on the STI..!! seems I was wrong..!!
Regrettably, yes I am. It's a bit of a nightmare having to give it so much throttle just to pull off, especially if you're trying to sneak under the radar in a "D". I've stalled the damned thing a lot lately.
Got a few last ditch ideas to find out about whether or not i can get it to be like I want it to be before I decide to move it on. It's a rapid piece of kit and and on the move feels very quick and responsive, just not suited for me to skulk around town in or do my long motorway trips with "the bounce". Bit of a nightmare for me as I'm having the same trouble as before finding a performance car with four seats, a boot and that can tow...!!
Thanks for the info too Bob. The remap is something I'm seriously looking into now on this car, though I was hoping I wouldn't have had to on the STI..!! seems I was wrong..!!
29 February 2008, 07:55 AM
#17
Nige,
I'm sure the remap will make towing easier as well. I found the torque gain from 2.5-4k rpm varies from 60 -100 wheel lbft which should help with pulling your snail.
Bounce? - is that the rear suspension oscillation on smooth roads? I've tried various tyre pressures but it never completely goes.
Another worthwhile tweak is to get the alignment checked. Mine seemed to have wheels pointing in all directions and resulted in bad tramlining. Cross country blasts are no longer a real workout and motorway journeys are less involving.
Nick
I'm sure the remap will make towing easier as well. I found the torque gain from 2.5-4k rpm varies from 60 -100 wheel lbft which should help with pulling your snail.
Bounce? - is that the rear suspension oscillation on smooth roads? I've tried various tyre pressures but it never completely goes.
Another worthwhile tweak is to get the alignment checked. Mine seemed to have wheels pointing in all directions and resulted in bad tramlining. Cross country blasts are no longer a real workout and motorway journeys are less involving.
Nick
29 February 2008, 05:08 PM
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Nige,
I'm sure the remap will make towing easier as well. I found the torque gain from 2.5-4k rpm varies from 60 -100 wheel lbft which should help with pulling your snail.
Bounce? - is that the rear suspension oscillation on smooth roads? I've tried various tyre pressures but it never completely goes.
Another worthwhile tweak is to get the alignment checked. Mine seemed to have wheels pointing in all directions and resulted in bad tramlining. Cross country blasts are no longer a real workout and motorway journeys are less involving.
Nick
I'm sure the remap will make towing easier as well. I found the torque gain from 2.5-4k rpm varies from 60 -100 wheel lbft which should help with pulling your snail.
Bounce? - is that the rear suspension oscillation on smooth roads? I've tried various tyre pressures but it never completely goes.
Another worthwhile tweak is to get the alignment checked. Mine seemed to have wheels pointing in all directions and resulted in bad tramlining. Cross country blasts are no longer a real workout and motorway journeys are less involving.
Nick
Towing..?!! Shhhhhhh....!!!
The snail is fine at the mo, just needs a change down to fifth for overtaking at legal-ish speeds. So I stick to 66mph on the sat nav and that works fine, though I think a remap pretty much makes sense as it'll save me a downshift. Dragging it down to the south of France this summer - should be fun..!! 
Yeah, that's the bounce/bob I mean. Flippin' annoying it is..!! I guess Prodrive springs will be the first step as I've seen one or two posts re the AST's not being "all that".
I had the alignment done quite early on up at Elite's in Rainham, though I suspect I may use Mocom to fit springs and therefore put the angles and dangles on my geometry.
Dynamix,
Nope, no lightened flywheel, though that's what it feels like.
10 August 2008, 06:38 PM
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Never had staalling issues but notice I put my foot down and a few seconds letter we start to go. has anyone tried sprint booster as below?
Sprint Booster was designed to overcome the throttle response delay for ECT (Electronic Throttle Control) equipped vehicles, providing a crisper on-tap acceleration, at the drivers disposal.
What is Sprint Booster ?
More conventional throttle cables are now being replaced with an ECM (Electronic Control Module) which translates how hard the pedal is pushed into electronic signals in order to provide the power to the wheels. The ETC (Electronic Throttle Control ) also known as Drive-by-wire, unfortunately has its downside of delayed response and subdued acceleration, which creates problems in situations such as up-hill starts, quick gearchanges and overtaking.
Sprint Booster is a device that improves acceleration on drive-by-wire cars by continuously measuring and converting the digital signal providing the ECM (Electronic Control Module) with a new and altered signal.
Benefits:
Ultra responsive accelerator pedal.
Fastest throttle response possible.
Zero delay time in acceleration.
Big difference in the higher rev range.
Improved response for downshifts and safer overtaking.
Overall safety and more fun on the road.
It can be installed by you or at any authorised dealer in less than 10 minutes.
The Sprint Booster Power Converter will be the samrtest gadget you fit to your car.
Sprint Booster was designed to overcome the throttle response delay for ECT (Electronic Throttle Control) equipped vehicles, providing a crisper on-tap acceleration, at the drivers disposal.
What is Sprint Booster ?
More conventional throttle cables are now being replaced with an ECM (Electronic Control Module) which translates how hard the pedal is pushed into electronic signals in order to provide the power to the wheels. The ETC (Electronic Throttle Control ) also known as Drive-by-wire, unfortunately has its downside of delayed response and subdued acceleration, which creates problems in situations such as up-hill starts, quick gearchanges and overtaking.
Sprint Booster is a device that improves acceleration on drive-by-wire cars by continuously measuring and converting the digital signal providing the ECM (Electronic Control Module) with a new and altered signal.
Benefits:
Ultra responsive accelerator pedal.
Fastest throttle response possible.
Zero delay time in acceleration.
Big difference in the higher rev range.
Improved response for downshifts and safer overtaking.
Overall safety and more fun on the road.
It can be installed by you or at any authorised dealer in less than 10 minutes.
The Sprint Booster Power Converter will be the samrtest gadget you fit to your car.
