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View Full Version : getting a rev limiter!



blankets3
12-03-2009, 02:47 AM
For those who dont know what it is:

http://en.wikipedia.org/wiki/Rev_limiter

http://www.youtube.com/watch?v=MoLGA-2q6aM&

For those who do know what it is:

woohoo!:winner

Fuman
12-03-2009, 02:55 AM
I thought this would be more special, like the idiot blowing his engine

TheMAN
12-03-2009, 05:14 AM
or the guy working towards it by reving the piss out of the motor cold

dentinger
12-03-2009, 07:28 AM
what? how are you getting one?
our cars already have one...

Dave_The_BMXER
12-03-2009, 07:37 AM
We do have one... I think these aftermarket ones do... something else not sure what though.


OP probably wants to be able to do this
http://www.youtube.com/watch?v=o5FFM4RXU0E

and maybe even this:
http://www.youtube.com/watch?v=LnKKWI30sEs&feature=related

dentinger
12-03-2009, 07:43 AM
im pretty sure those only apply to turbo'd cars.
something along the lines of a rich tune, and some of the air/fuel mixture getting past the turbo, and igniting in the exhaust system.

SilentJay
12-03-2009, 07:57 AM
:S Man, everyday I see people running out of the office into ice-cold cars (nice and expensive ones too!!), starting them up, and ripping them to 4-5k RPM so that it'd warm up faster.... So painful to watch.

froggy
12-03-2009, 08:39 AM
:S Man, everyday I see people running out of the office into ice-cold cars (nice and expensive ones too!!), starting them up, and ripping them to 4-5k RPM so that it'd warm up faster.... So painful to watch.

bmw's used to (not sure if they still have this feature) have a gauge for lack of a better word, and a rev limiter for just that very reason. I believe the dial around the tachometer would light up to the maximum the engine should be run to, given the coolant/oil temp.

spd frk
12-03-2009, 10:05 AM
BMW M-cars have this feature. An active readline, as the mtoor warms up the redline moves from 4000rpm up to 8000rpm or so.

Turbo cars tend to make the most flames do to rich overrun at redline. Also they tend not to run cats in a lot of other provinces/states/countries which allows those flames to come out hte back. You won't get it with a cat equipped car.

blankets3
12-03-2009, 11:18 PM
i am confused by some comments:

why is everyone talking about revving a cold motor with one of these?
if anything it will prevent u from revvin that high.

dont we have a rev limiter?
We do not have a rev limiter in the car alrdy, step on the gas ull red line aka no limit...
u may be thinking about SPEED limiter which dosnt let use any more gas?

also:

my car has no cats

Vibrant Headers + Hks Exhaust :D

Thrizzl3
12-03-2009, 11:20 PM
what about a turbo..won't you need one of those too?

dentinger
12-03-2009, 11:24 PM
dont we have a rev limiter?
We do not have a rev limiter in the car alrdy, step on the gas ull red line aka no limit...
u may be thinking about SPEED limiter which dosnt let use any more gas?


red line is at 6500 rpm.
stock rev limiter is around 7250 rpm.
being, it'll bounce off the rev limiter at around 7200 rpm.
i would know. i've done it more than once.

-cj-
12-04-2009, 01:44 AM
The guy in the first video states that his engine is in normal running temperature, so he isn't reving it cold... (I was about to comment on that too, but then noticed the comment in the video ;)

Our rev limiters aren't as accurate as an aftermarket one... Revving your car in neutral and bouncing off the rev limiter is a VERY bad idea...

blankets3
12-04-2009, 02:18 AM
all in good time phil all in good time :P

im want to limit my car around 5000~ mby even 4500 depending.

-cj-
12-04-2009, 02:46 AM
In neutral? Or in general? Nothing wrong with bouncing off the stock rev limiter, as long as you're in gear...

RNUOVR
12-04-2009, 09:22 AM
all in good time phil all in good time :P

im want to limit my car around 5000~ mby even 4500 depending.

Installing a rev limiter on our cars at anything under 7000 RPM is pointless as you would be limiting the motor when it was still making power & the only thing that you would have is the noise of it hitting the limiter at a lower RPM. The result would be that your car would end up being slower as you would need to shift before getting to the top of the power curve - now unless you were looking to impress the little kinder whores on the street corner down the road into making them think that you've got a huge motor under the hood - it's pointless. Just keep your foot out of it or watch the tach.

Rev limiters are not needed unless you are racing really - We use them on our DIRT cars as they are mandated by the governing body as we are not allowed to turn over 6200 RPM (well 6000 next year) in our current class (spec motor class)
The other advantage is if the car pops out of gear, blows the tranny, driveshaft or rear end it will stop from over reving the motor & chunking it. But keep in mind we are racing & beating the shit out of our cars/motors and you don’t even have the chance to look down & read any gauges.

blankets3
12-04-2009, 01:14 PM
rly not looking to impress anyone (im obvi going to show ppl that wanna see it, but im not goign to sit at a red light n start banging it off)... and i will move this to my s15 when i get it (4 more years (woot))

y 7000, id like to stop it B4 it engine redlines preventing engine ware as much as possbile. car makes most power from 3-5 but in winter i dont want it getting up that high n e ways

when i track it i can always adjust it if need-be

Dave_The_BMXER
12-04-2009, 02:47 PM
5 grand thats really low?

I had a BMW that's redline was 4800 before I chipped it (55ish after) being able to only rev to 5 grand gets old FAST.

condor888000
12-04-2009, 03:08 PM
EEK. Really? Which engine was that?

Donutz
12-04-2009, 03:21 PM
Was it diesel?

dentinger
12-04-2009, 04:35 PM
this is so pointless. like, a rev limiter at 5k? why?
i just dont see the point.

Dave_The_BMXER
12-04-2009, 04:40 PM
EEK. Really? Which engine was that?

Ya, 85 325e motor 2.7 liter inline six

120hp
170lb of tq


Was it diesel?

No but for the torque it had it might as well have been. Tank of a motor though over 300 thousand miles when I sold it. New owner tracks it with the same motor.

Donutz
12-04-2009, 04:50 PM
I would leave it as is and shift early instead. I imagine there are times where you need more than 5000 rpm. I'm thinking merging in traffic or emergency maneuver where it might not be safe to shift but you need to be on the throttle. Also, if you get wheel spin in slippery conditions, you might easily bounce off the limiter. Each to their own though; if you want it I say go for it.

blankets3
12-04-2009, 05:13 PM
everyone really feels that thats low?

mby ill bump it up to 6, i can always adjust it as i see fit

Donutz
12-04-2009, 07:35 PM
If you can adjust go for it. Try testing it under controlled conditions so you learn the limits.

blankets3
12-04-2009, 09:42 PM
If you can adjust go for it. Try testing it under controlled conditions so you learn the limits.

http://farm4.static.flickr.com/3103/2600911712_e8861f6583_o.jpg

RED KNOB REV 1:
This will set the Rev Limiter
16 adjustment from 0~F. 0 is a 2500rpm with an increase in 500rpm for each additional turn in the knob.

WHITE KNOB REV 2:
The signal for this knob is set while the E-BRAKE is engaged.

GAIN KNOB:
This knob will increase or decrease the `impact` of the flame/sound from the exhaust. With the setting as zero the item will be turned off and will increase as the knob dial is set.


http://www.youtube.com/watch?v=fIjaf_LJUUs&feature=player_embedded

http://www.youtube.com/watch?v=81GPj-oOoY0&feature=player_embedded

Soyabean
12-04-2009, 10:09 PM
I'd leave it as is. Like Adam said earlier, our cars do have stock rev limiters. I have also accidently hit the rev limiter a couple times when i first learned how to drive stick. It just kicks back somewhere in the 7k.

Lowering it down to 4-5k, I feel that you are limiting your engine's potential. We gain max hp at ~5500 so you cannnot get the max (when you need it). Like Jason said, shift earlier.

But since you have one already (I assume) and it is adjustable, I guess you can play around with it

blankets3
12-05-2009, 12:13 AM
i alrdy have one now since i bought one!

comming from japan as we speak!

condor888000
12-05-2009, 12:49 AM
That's dumber than your highlighter wheels and your hacked up steering wheel put together...

blankets3
12-05-2009, 01:32 AM
my rims are not dumb and nothings dumber than my steering wheel, how is this dumb? i don't understand

Donutz
12-05-2009, 03:25 AM
BEER POWAH! I joke.

condor888000
12-05-2009, 03:34 AM
Sorry, I think that if you managed to solidify cat vomit and somehow not just make that solid cat puke into the shape of rims, but mount tires on your cat vomit wheels, they would look better than your god awful neon yellow wheels.

At least we both agree having a chunk of bondo between your airbag and your face is retarded, for many reasons.

As to the rev limited, you already have two rev limiters, one programed into your ECU which cuts fuel(or throttle, not sure which) when you hit ~7200RPM. Another is your god damn foot. Don't want to go over X? Well then don't put your foot down.

OMG LOOK MOMMY! I'M NOT GOING ANY FASTER AND I DON'T NEED A BLACK BOX FROM JAPAN TO DO IT!

It's a waste of time and money. You haven't even given a clear reason for wanting another limiter. If it's to sound like a complete douchebag while banging off it just because you can, then I'm just glad you're not in Ottawa where I'd have to deal with it.

Now to deal with your foolish quotes from earlier.



We do not have a rev limiter in the car alrdy, step on the gas ull red line aka no limit...
Yes we do, stop spreading misinformed bullshit.



car makes most power from 3-5 but in winter i dont want it getting up that high n e ways
No it doesn't, the 3 makes the most power right before red. Look at a dyno chart and you'll see what I mean.


mby ill bump it up to 6, i can always adjust it as i see fit
So you'll go through all the trouble of figuring out how the hell to wire it...and then set it 1200RPM under the stock one? Please explain how that makes sense. I honestly want to know why you think it's worth it.

Really man, it's a waste of money and a mod for the sake of doing a mod. If you're going to go for it fine, it's your money, your time, and your car.

Just don't post bullshit when you're justifying doing it. If you do some kids going to come in, read it, and we have a vicious cycle of bullshit regurgitation.


BEER POWAH! I joke.
Man, lucky I'm a fairly nice semi-drunk tonight, you don't wanna see me when I'm angry drunk...

TheMAN
12-05-2009, 06:33 AM
http://codebloo.net/stuff/picard-headesk.jpg

Dave_The_BMXER
12-05-2009, 08:40 AM
At least we both agree having a chunk of bondo between your airbag and your face is retarded, for many reasons.



???? Did I miss something?

dentinger
12-05-2009, 09:41 AM
http://i173.photobucket.com/albums/w65/dentinger/facepalm.gif

blankets3
12-05-2009, 01:05 PM
its actually simple to wire as long as u have a ecu pin-out... i was never rly trying to justify it, i said that for the reason that feel most gains from 3-5 and i wasn't aware of this 7k rev limiter:\

its like asking why put a mazda speed exhaust on ur car when it robs power?

fortunately i can move this with a few wire snips and put it in a another car later on that will require it

qq less

oh and for the record

http://kindness365.files.wordpress.com/2009/09/cat-puke1.jpg

that looks nothing like the color of my rims.

Fuman
12-05-2009, 01:47 PM
rly not looking to impress anyone (im obvi going to show ppl that wanna see it, but im not goign to sit at a red light n start banging it off)... and i will move this to my s15 when i get it (4 more years (woot))

y 7000, id like to stop it B4 it engine redlines preventing engine ware as much as possbile. car makes most power from 3-5 but in winter i dont want it getting up that high n e ways

when i track it i can always adjust it if need-be


its actually simple to wire as long as u have a ecu pin-out... i was never rly trying to justify it, i said that for the reason that feel most gains from 3-5 and i wasn't aware of this 7k rev limiter:\

you already knew about a 7k rev limited based on your previous post, although it is implicitly implied. Even if I am mistaken, the rev limiter on our car was made clear in post #12 of this thread.

The additional rev limiter only tells those around you that you don't know how to work a gas pedal. There isn't noticeable engine wear if you bounce off the rev limiter hear and there. Many of us here who drives our cars hard, still have engines that don't burn oil at over 100,000KM.

Spend money on quality fluids if you are worried. This mod only makes the user look like an incompetent fool; assuming the user already have a stock rev limiter.

Xerox
12-05-2009, 01:55 PM
This thread cracks me up.

Anyway, here's some top gear top tip.

Implied redline on tach is 6500rpm.

According to 2004 publishing of Car&Driver (which they probably just get from literature by the manufacture):
Power (SAE net): 160 bhp @ 6500 rpm
Torque (SAE net): 150 lb-ft @ 4500 rpm
Redline (fuel cutoff): 7100 rpm

condor888000
12-05-2009, 02:29 PM
its actually simple to wire as long as u have a ecu pin-out... i was never rly trying to justify it, i said that for the reason that feel most gains from 3-5 and i wasn't aware of this 7k rev limiter:\

LMFAO! Then you can't read.


its like asking why put a mazda speed exhaust on ur car when it robs power?

Ok, that doesn't make sense.


that looks nothing like the color of my rims.

I didn't say it was the same colour. I said rims made out of cat vomit would look better than your highlighter yellow painted wheels.


???? Did I miss something?

I actually don't know if he posted about his stupidity here, I know he did on M3F though. Anyway, here's the story.

Last winter Blankets decided he wanted to make the M on his steering wheel into a flying M. So he tries to pull it off, completely facking up his airbag cover in the process. To fix it, he bondo's his steering wheel. Yes, bondo over the airbag. Then he builds it up so the M is embedded in the bondo, after painting it red of course. So now there's an airbag, then what little remains of the airbag cover, then bondo/emblem and then his face. So if that airbag ever goes off...well I just hope that the airbag cover still separates the way it was designed to.

Here it is in the middle of the process.
http://i359.photobucket.com/albums/oo31/blankets3/IMG_0311.jpg

Finished.
http://i359.photobucket.com/albums/oo31/blankets3/IMG_0389.jpg

McGuyver_3
12-05-2009, 02:33 PM
I am kinda lost here a crummy car with a rev limiter

i saw blankets wheel in person and well all i can say is it looks kinda cool but the way it is constructed well i kinda would fear for my life with that thing in there.

Gizzmo_jr
12-05-2009, 02:33 PM
(steering wheel) that was him, oh god.

blankets3
12-05-2009, 02:51 PM
-_- im alrdy in the process of replacing the steering wheel


(lol dan) - if it was properly designed it would be good but yeaaaa



ah w/e its been done. The limiters in the mail, i payed $0 for it, mby ill post a vid when its installed :\

TheMAN
12-05-2009, 03:43 PM
this thread is epic fail

Dave_The_BMXER
12-05-2009, 10:08 PM
Oh dear.

Hives
12-05-2009, 11:11 PM
Whats done is done. Its been ordered and in the mail. This would interesting to see.

blankets3
12-05-2009, 11:16 PM
... mby ill even make the video showing it while doing a burn out :chuckle





(im loled as i wrote it)

schmoo
12-06-2009, 12:05 AM
This one beats the wheel lug torque thread!

blankets3 is now my hero (replacing x o k x)

That is gonna be one awesome ride when you're done, dude. :headbang

CanSpeed 3
12-06-2009, 01:47 AM
... mby ill even make the video showing it while doing a burn out :chuckle





(im loled as i wrote it)

You just bought a 2-400$ secondary rev limiter to prevent engine wear, yet your thinking about posting a video of you doing a burnout? Hmm ok.

You put and intake/exhaust and modify your motor for more power and response, but yet you still wanna put a rev limiter on.

I dont fallow.

Hives
12-06-2009, 02:00 AM
We all want to see flames shoot out the back. Girls love that don't they :chuckle

blankets3
12-06-2009, 02:26 AM
We all want to see flames shoot out the back. Girls love that don't they :chuckle

naw man, i tried that pick up line once doesn't work...


You just bought a 2-400$ secondary rev limiter to prevent engine wear, yet your thinking about posting a video of you doing a burnout? Hmm ok.

You put and intake/exhaust and modify your motor for more power and response, but yet you still wanna put a rev limiter on.

I dont fallow.

well u dont read ether,

i said i got it for free i payed $0.00 USD

also i was being VERY sarcastic *note the tiny white font saying i loled writing it, not to mention the emoticon

dentinger
12-06-2009, 02:29 AM
http://i173.photobucket.com/albums/w65/dentinger/roflbrothle.gif

silvermist99
12-06-2009, 12:22 PM
wow.. mz3 section are so much better than ms3 =D

Zoom Zoom Boy
12-06-2009, 01:12 PM
We should sticky this thread. LOL. Epic Fail and Hilarity.