Road Speed Governor>>>>disable
 

Hello,has anyone looked into the mazda speed governor??
I picked up my car and through a code that same hour..freaked on the service guys over not being able to tell me what went on!!!
A few weeks later, on finally a beautiful day i get to go play in the 8....doesn't the car shutter and fumble and through a code...
finally i get the answer:-(
I can't beleive mazda has in place a speed governor at 220kms??
4th gear 5000rpm...i'm hitting a road speed governor??
Christ my dodge 4x4 cutts out at 240kms, and it doesn't have the stopping power the 8 does .
HAS anybody looked into bi-passing the governor?
We will be installing the Wolf 3.0v4 once our products are dynoed but until then it would be great to get around this safety.
thanks

Are you sure that you didn't put it into limp mode by possibly spinning the wheels too much? Otherwise, there is no gov. that anyone else has reported.

Oh yea, top speed reported so far has been somewhere around 148-152 mph.

So that would be around 115mph.

Is your car an auto?
either way sounds like something is wrong

hmm. wel the ecu cuts the power when the car hasn't reached a certain temp. so if it was cold it could cause that. also the car has a limp mode but once you are in it, it wont turn off by itself so i dont think thats it. must be the auto.

edit: whats a wolfwhateverversion? what are you dynoing?what was the cause of the cell that threw the first hour?

Didn't Monte report the same thing in his auto? But this one sounds like a m/t.

Just for the record the 8 is a 6spd...
and the first time they where baffled by the report of a code..5 techy scratching their heads.
The first time it happened the roads where dry went through the gears and hit the governor..engine light flashed intermitantly,cut power power came back on and the engine light canceled itself with 5-10 miles.
second time i was already at highway speeds..basically coming hard of the on ramp..going through the gears.Went through third into 4th and it hit again..same as before.
Mazda says it the road speed governor,cutting the power to lower speed...doesn't matter what gear i'm in i can hit it.

AS for the question regarding the Standalone..
We are a dealer for the Wolf aem system out of austrailia.
The Wolf 3d version 4 hc+ will be installed.
I presently run the wolf 3d v4 hc+ in my 500whp second gen.

note: 160 kms/hr is 100 miles per hour...

it sounds like you are banging up against the cold engine rpm limiter not a speed govenor. if you hit it, it willl throw a cell once the engine gets to the proper temp it resets and allows you to go over the lower limit. it's in the manual.

What are your RPM's when this hits??

PLease give me some credit..have owned several rotaries over the years i know not to beat on them when their cold.
-the first time the car was idling in the parking lot while i finished the signing of the papers.
-second time was after driving around town for 1/2 day.
the code was thrown around the 4500-4700 range.
there was no over temp or under temp situation present...just driving it the almost redline going through the gears....Mazda canada has confirmed that there is a governor in place thats why i'm asking for info.we haven't got our copy of the Mazda rx8gt manual :electrical section yet.....

giving you all the credit i can given the info i have. the speed limiter should not limit the car in fourth at 5k rpm and @100mph. i and many others been there and over. if it wasn't the rpm limiter than the code that caused the cel should tell you what happened. maybe a misfire or series of them.

according to some magazine i read (i think motor trend) the ecu kicks you out at 147 mph, which is 235 kmh. i have the auto, and last night i brought her up to 119 mph, which is 190 kmh. i would have brought her a little faster but i hit a real nasty curve on the highway and i decided i wanted to keep control of the car, which i managed to, and went through a nasty curve at 119 mph.... yay 50 50 weight ratio. garuntee a 350z couldn't have pulled that off. The govenor should not be kicking you out that early, its prob something else like everyone else on this forum said.

The US cars are drag limited only. Mine hit 170MPH on a dyno, so there is no speed limiter on the US cars.

I've also taken the car to 138 on the road.

Personally been at 120mph on the highway, felt like there was plenty more to go.

Hits at between 4200-4600 rpm ,doesn't have to be in a certain gear....4th,5th or 6th

essential: Thats a definite problem. I think a trip to the dealer and a call to MNAO

What do you mean "drag limited only" is there some type of limiter or governor about cause I want to get as much power and speed as I can and that would be a serious problem when racing. Any info if there's one of any kind RPM or MPH or anything, and how to bypass it would be lots of help.

"i and many others been there and over. if it wasn't the rpm limiter than the code that caused the cel should tell you what happened. maybe a misfire or series of them."

Once again the dealer tryied to pull any hard codes...none present...
If there was detonation or something else with the rotors the "rotor" cel would have went off..
every one is generally confused.
I'm wondering if anyone else here in canada has hit the speed governor i hit? if so was it higher?

Hmmm, I think he meant drag as in AIR drag :)

"the speed limiter should not limit the car in fourth at 5k rpm and @100mph."

"Personally been at 120mph on the highway, felt like there was plenty more to go."
-----------------------------

The original post said "I can't beleive mazda has in place a speed governor at 220kms?"

220KPH is around 139-140MPH, not 100MPH.

Re: Road Speed Governor>>>>disable
 

help me out here. you said:

something didn't sound right which is why people thought you might have the automatic. on my drive home i found 4th gear and 5k rpm to be 70mph. what gear and speed were you going?

220kmh is 137 mph. so you couldn't have been in 4th in a 6speed.

edit: seems oodlum is on the same track.

lets try to pull some of your "problems" together. you also had the ton of oil in your intake. did you change intakes? in your other thread you said you discovered the oil when making a new intake. also you are having your oil pan replaced right?

Yes ,i still have the stock in place..never ran the car with the new design twin intake.Waiting for the car's issues to get ironed out before we dyno and get our base numbers.
I'm getting the oilpan installed tommorrow and
have severe oil in my intake and oil lose

are you still experiencing the oil into the intake? could it be screwing with the maf causing your limitor problem? or if you oil pressure is low or oil level is low(which since you have the bad pan and oil loss this could be it) could be causing the car to tune itself down. if it gets the same code several times in a row it will go into limp mode.

I drove it at 143mph this weekend (personal best in this car). The car pulls strong up to the mid 120's but it takes a while to get it up to 140. My FD would get to the 150s in a heart beat, man I miss that car.

QUOTE:
"are you still experiencing the oil into the intake?"

-when i first discovered it..i cleaned it flipped the filter 180 and drove it for around 200kms..pulled it apart and the filter was covered again and the intake tube was full!!

Quote:
"could it be screwing with the maf causing your limitor problem? or if you oil pressure is low or oil level is low(which since you have the bad pan and oil loss this could be it) could be causing the car to tune itself down. "

-maybe my oilpan is causing the problem under heavy accelaration???

-I have only pulled the code twice.... with several kms between occurances.

Quote:
if it gets the same code several times in a row it will go into limp mode.

-it doesn't throw a "hard code" just flickers the engine light kill power and then comes back

this is going to sound stupid, but it happened to me.

how much fuel do you have in the car??? i tried to make my high speed runs with the yellow light on. you know lighter and everything.

everytime i hit about 115mph it would throw a cel and slow down.

filled up with gas, 20min. later hit 135 with no problem.

beers

just my uneducated opinion but you have got to get them to pull the codes and locate the source of all the oil. that is definetly a BAD THING and to me it all seems connected. the oil is coming from or going to somehwere the sensors don't like and that's causing the codes and temporary loss of power.

Mine too.....
 

Happened to me too, on the weekend. Pulled out to go to work and the yellow light was on.... anything more than 'usual' acceleration caused the light to flash, and power to stumble.

Disconnected the battery to reset, and all is fine, hauling ass today with three passengers, 9000 revs, no problems.

My personal best in this car was 244 kph, ain't no limiter here!

S

perhaps your car misfired? mine seems to do it occasionally at 7000RPM, decellerate and resume at 8000...then the CEL light comes on for about 30 seconds flashing and then back off...i've had it reflashed twice now...

This is getting confusing, was it definitely your Engine Check Lamp that was on, or your oil lamp? If it was your engine check lamp then there should be a code, weird. How modified is your car? There are TSBs for MIL on and oil lamp on, but that doesn't explain your power loss.
My two guesses would be a metering oil pump problem, which may explain the oil in your manifold, or that your auxiliary air port and one of the injectors is not working intermittently. The metering oil pump is the life of the rotary engine, so you should have it looked at immediately.
Or it could be something simple, like a loose connector. I think it would be best to leave the car at a dealer for a week or so to let them find the fault.
Hope this helps.

back from the dealer
 

Well had the car at the dealer all day.....
here's what was found:
first off the techy was dumbfounded when he pulled the vacumn line apart and found it to be presurized!!
a vacumn silenoid was malfunctioning(the one located on the intake prior to the airbox),and 2 check valves where plugged.
check valves where in stock, but silenoid is 3 weeks from japan.
They installed my new oilpan...which may or not aid in the oil problem...
the vacumn lines are presurized they can't find out why...the oil is being blown into the intake..covering the mass air sensor..throwing the ecu into limp mode.Which in turn has affected by throttle response due to improper signal from the (covered in oil )mass air sensor.
They still have to check my tps in conjuction with the readings from the mass air sensor and do a compression check.
I expressed my concerns of the motors compression...if the vacumn lines are that presurized while the motor is off what is the presure in during a running condition???
But they want to do everything in steps and wait for the order parts before going through the rest on the car..which is understandable,but annoying.
When there is a demo rx8 on the lot covered in snow they could pull the ordered parts from, or at least check the readings and compare..
i'll keep you guys posted..thanks for all the info.

Could that line pressure have anything to do with several people having oil in the intake hose??

Still sounds strange to me. I looked at your website. Is your 8 modified (intake and exhaust)? I look forward to hearing any new information on this.

On US Spec cars, there is no limit other than the 9000 RPM rev limiter.

"Drag Limited" means given local conditions, at some point (estimated at sea level to be in the 160 MPH range) the engine cannot push you through the air any faster.

Personally, I've had mine well past 120 MPH with plenty of "go" left :D

see that? i said oil screwing with the MAF! maybe i am learning something afterall!:D

Automatics are speed limited to 124.5MPH

My bad. On the US 6MT cars :D

Back from the dealer
 

Hey just got back from the dealer...they found a few things wrong.
here's the comments:
secondary intake tube solenoid valve is defective..seized.
When the mechanic pulled the vaccumn lines off..it was presurized!!!.
Further looking they found a check valve plugged.
Here's my theory for the temp. engine code under heavy accelaration(thoughts of a governor, and confirmed by mazda??)
With out the new oilpan on under heavy accerlartion the oil runs back in the pan,causing the oil to be sucked up into the intake tube...so much is blown into the intake tube that the mass air sensor get coated in oil...thus causing the ecu to get confussed and throw codes.
Put this into the equation along with the faulty solenoid valve limiting air at high rpm
HENCE MY TEMP. ENGINE CODE AND PROBLEMS.
reading the forumns i seam also to be one of the higher mileage cars in canada??18,000kms.
thanks for all your imput.
i will await the japan ordered part and hopefully this will correct the issue.

The dealer installed my new pan and i had new plugs put in.

speed limiter
 

I'm new to the site, so I am surprised there is so much speculation on this post. I live in Japan, and my rx-8 therefore is Japan spec. ALL japanese-built cars have a speed limiter at 178 kph, or about 115 mph. I think the car in question was in OZ, but having the exact speed limiter sounds like too much of a coincedence. I have had my rx-8 (sport model with 6-speed) for only a little while. I must say it absolutely rocks. Not to mention, I can fit two surfboards plus a cute surfer chick inside the car. Sure a little more power would be better, but I drive it up into the mountains near mt. fuji on hairpin turn after turn, and it takes them like a rock star at 80 kph - traction control blazing. I am a little concerned about the govenor, 115 mph max is kinda a waste - it makes hitting a track out of the question. Does anyone know how to remove the govenor? I would need to be able to replace it, since removal not only voids the warrantee, but it makes it impossible to register the car (called a "shoken" here). Hopefully it is electronic. thanks.

Not necessarily... most I saw on my track day was 108, and I was coming out of the previous corner faster than most people.

I'm sure there must be a way around the shoken... you think every R33 V-spec in Japan is still limited to 115? :D

I don't know what a Japan v-spec is, but all production cars made in japan have the 178 kph speed limiter - this is a Japanese law. doesn't apply to foreign cars, which can be street legal with no limitation. there is also a large tax on imported cars, so if you want to drive fast, you need to pay up. must get shoken every 2-3 years, and they check for the limiter. so if you want to get around it, you need to go to a crooked shop (not so easy for foreigners).

221 mph
 

I had mine at 221 km/h (138 mph) for like 10 -15 seconds and it would not go up in a big flat straight... Anyone has a clue why?

I was in 6th gear like at 7 K Rpm, but the needdle did not keep going up :(

Ditto

easy - you dont have enough power in that gear to overcome the drag at that speed. find a hill to go down or shift up from 5th to 6th later. or find a nice tail wind

was thru terwillger on 5 here? ;) i know one guy (monte) who had his over a hundred thru there.

Nope I was on my way home from Bellevue on I-90. I was near Ellensburg on the straights and had an irritating Honda Civic that refused to get out of the fastlane and their headlights were in my driver's side mirror. So I gassed it up for a bit and got wayyyyy ahead of them. No more irritating lights... :p

top speed is actually when you hit redline in 5th gear... not enough oomph in 6th gear

Sorry my wrong
 

I was in 5th gear at 8300 RPM
LOOK AT MY AVATAR!