112 mph 98 legacy
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Posts: 1,661
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Car Info: 98 Impreza Outback Sport
Originally Posted by 13Devils
my 98 gt goes faster than my speedometer!!!
really though, the speedometer only goes to 120 but the needle keeps going past there, i only went so the needle was straight down and i still had a little rpms left...
i dont think its supposed to do that is it?
really though, the speedometer only goes to 120 but the needle keeps going past there, i only went so the needle was straight down and i still had a little rpms left...
i dont think its supposed to do that is it?
About those torque chips- Are they really worth it? Do they have much of an effect beyond bypassing the governer? How are they better than the cheap ($25) torque chips you can get on Ebay? I'm trying to get the most bolt-on power from my 2.2 4EAT, so I've definitely considered a chip- I just haven't heard much about them and have been hesitant to try one.
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i have a 97 gt similar to 13devils' 98 and i have had mine pinned past the final speedo number, however as you get further along the speedo the actual speed is off by an increasing amount, so i don't really know how fast i was going. the best way to find out for sure is to time of a mile ( or km) and do the math. Finally while it was fun going 120 plus i could almost see my fuel gauge drop. Good luck with the chip but 110 might be all the tranny can handle
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Joined: Apr 2004
Posts: 122
From: USA
Car Info: Subaru
soy: I just just below redline i believe(or at)...I wasn't paying much attention to the dash at the time...the needle was steady until I hit the limiter(I assume rev) and then droped my speed down ~5mph...didn't notice any valve float.
torque and HP had to have been way low...it takes a long time to get from 100 to ~130(minutes)
fibuz
torque and HP had to have been way low...it takes a long time to get from 100 to ~130(minutes)
fibuz
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Joined: May 2004
Posts: 11
i have a question
ok i have the same problem with the fuel cut off at 112. im in the process of turbo charging the car and to control my timimg and fuel delivery im installing and tuning with the greddy emanage. if i do use that will i be able to get rid of the fule cut off or am i going to need it to be flash either way. and im also auto for now but in the process of getting ready for a tranny swap if that makes a difference.
-matt
-matt
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@ 130 mph
Fibuz,
Assuming your car has a DOHC 2.5 litre non-turbo engine, your torque should peak at about 162 ft-lb at 4,000 rpm, and hp at 165 at 5600 rpm. At the red line, you are correct, both hp and torque should be significantly down from peak readings. A valve float would probably happen right after exceeding the red line rpm unless you have high tension high performance valve springs. At 130 mph, your engine is pretty much maxed out, unless you've made some major alterations to the engine which is just a fancy air pump.
I would have guessed your redline rpm would have been exceeded at 130 mph. I'm very impressed!
Soybean
Assuming your car has a DOHC 2.5 litre non-turbo engine, your torque should peak at about 162 ft-lb at 4,000 rpm, and hp at 165 at 5600 rpm. At the red line, you are correct, both hp and torque should be significantly down from peak readings. A valve float would probably happen right after exceeding the red line rpm unless you have high tension high performance valve springs. At 130 mph, your engine is pretty much maxed out, unless you've made some major alterations to the engine which is just a fancy air pump.
I would have guessed your redline rpm would have been exceeded at 130 mph. I'm very impressed!
Soybean
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Joined: Nov 2002
Posts: 110
From: Natick, Massachusetts
Car Info: 1999 Subaru Legacy GT Limited - Quick Silver Metallic
My understanding is that the 97-99 USDM Legacy GT's have no electronic speed govener as they come factory equiped with "H" speed rated tyres. The lesser models do utilize the electronically limited speed govener that kicks in at 112 MPH which corresponds to the "S" rated tyres top speed.
This is done to avoid liability if some fool tries to figure out their top speed using tyres only rated for 112 MPH and suffers a tyre failure and then crashes. Subaru is not alone in this area as most all manufactures do exactly the same thing.
Many years ago General Motors got sued (I *think*) because some teenaged kid out driving in his first brand new car (A Pontiac Firebird ?) on regular tyres suffered a blow-out from at high speed and crashed. I forget the specific details (kid was either killed or seriously injured and the grieving parents sued GM ?) but from this point onwards all auto manufactures in the US have are basically terrified of being sued.
IMHO if you are driving at 100+ MPH and you crash its nobodys fault but your own no matter what speed rating your tyres are.
The 1996 Legacy "GT" was not really a true GT (IMHO) as it was the first year model and only came with 15 inch diameter wheels and a 4EAT automatic transmission, So Subaru had not equiped this model with the high speed tyres, therefore it continued to use electronic speed limiter.
Rather than equip all Subarus that are capable of speeds in excess of 120 MPH with the more expensive "H" speed rated tyres (that are rated for 130 MPH speeds), Subaru elected to put the electronic speed govenor on the cheaper low-end Brighton, Legacy L, LS, and LSi models and equip these models with the "S" speed rated tyres as most buyers of these models are unlikely to care how fast their cars top speed was.
PS. I think this thread is really an Electrical Issue, not a Transmission issue therefore this thread should perhaps be moved to the appropriate category I.E. "Legacy Electrical" instead of "Legacy Transmission". Can the forum monitor accomplish this task ?
This is done to avoid liability if some fool tries to figure out their top speed using tyres only rated for 112 MPH and suffers a tyre failure and then crashes. Subaru is not alone in this area as most all manufactures do exactly the same thing.
Many years ago General Motors got sued (I *think*) because some teenaged kid out driving in his first brand new car (A Pontiac Firebird ?) on regular tyres suffered a blow-out from at high speed and crashed. I forget the specific details (kid was either killed or seriously injured and the grieving parents sued GM ?) but from this point onwards all auto manufactures in the US have are basically terrified of being sued.
IMHO if you are driving at 100+ MPH and you crash its nobodys fault but your own no matter what speed rating your tyres are.
The 1996 Legacy "GT" was not really a true GT (IMHO) as it was the first year model and only came with 15 inch diameter wheels and a 4EAT automatic transmission, So Subaru had not equiped this model with the high speed tyres, therefore it continued to use electronic speed limiter.
Rather than equip all Subarus that are capable of speeds in excess of 120 MPH with the more expensive "H" speed rated tyres (that are rated for 130 MPH speeds), Subaru elected to put the electronic speed govenor on the cheaper low-end Brighton, Legacy L, LS, and LSi models and equip these models with the "S" speed rated tyres as most buyers of these models are unlikely to care how fast their cars top speed was.
PS. I think this thread is really an Electrical Issue, not a Transmission issue therefore this thread should perhaps be moved to the appropriate category I.E. "Legacy Electrical" instead of "Legacy Transmission". Can the forum monitor accomplish this task ?
Last edited by Jonathan; Oct 15, 2005 at 04:22 AM.
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Joined: Oct 2003
Posts: 11
From: Washington
Car Info: 95 Legacy Sedan
Check the tach at 112mph
The Legacy with the 2.2 motor hits redline in 4th gear at 112. The 2.5 has no problem going past 120. There is now way to get the car to go faster, though you may be able to get it to 112mph a little faster. From everything I have seen there are almost zero mods for a 2.2 motor and what is out there is expensive. While it's one of the most reliable and longest lasting subie motor, it's not designed to be modded. If you really wanna go fast go get yourself an sti motor with a six speed.
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