Knock reported when hitting the rev limiter
#1
Evolved Member
Thread Starter
Knock reported when hitting the rev limiter
Seems the knock sensor gets annoyed when I hit the rev limiter.
If I hit the hard rev lmiit, I can usually expect to see knocksum around 4 to 8 reported. And when the knock sensor is unhappy, I'm unhappy.
Can someone please explain to me what's going on here...
I've whacked into that hard rev limiter for years in autox. When you're right at the top of a gear with a braking point coming right up, there's no point in changing up. And when that red mist descends, it's all too easy to hit that limiter when you should technically be levelling off a hair before.
This is my first vehicle with data logging. Has this been a bad thing to do all along? Am I only finding out now?
Rich
If I hit the hard rev lmiit, I can usually expect to see knocksum around 4 to 8 reported. And when the knock sensor is unhappy, I'm unhappy.
Can someone please explain to me what's going on here...
I've whacked into that hard rev limiter for years in autox. When you're right at the top of a gear with a braking point coming right up, there's no point in changing up. And when that red mist descends, it's all too easy to hit that limiter when you should technically be levelling off a hair before.
This is my first vehicle with data logging. Has this been a bad thing to do all along? Am I only finding out now?
Rich
#3
Evolved Member
Thread Starter
#5
Evolved Member
Thread Starter
It's a case of "choose your own rev limiter", really. Stock RA has a low limit, somewhere in the mid to high 6000s. I forget, to be honest.
![Roll Eyes (Sarcastic)](https://www.evolutionm.net/forums/images/smilies/rolleyes.gif)
Me, I chose to stick with the 7150 rev limit - I figured a 7k upshift point was more than adequate - by then, the tiny stock RA turbo is having a full-on asthma attack.
Rich
Last edited by richardjh; Mar 9, 2011 at 11:50 PM. Reason: Correct thee Eengleesh.
#8
EvoM Guru
iTrader: (8)
I've hit the rev limiter at least once daily since I owned my Evo 8, 6 years now and still going (knock on wood). I think of it as my shift "light". ![Wink](https://www.evolutionm.net/forums/images/smilies/wink.gif)
I wouldn't worry about it as long as you don't just drive around riding the limiter and you don't have it at some insane RPM like others have said
![Wink](https://www.evolutionm.net/forums/images/smilies/wink.gif)
I wouldn't worry about it as long as you don't just drive around riding the limiter and you don't have it at some insane RPM like others have said
![Wink](https://www.evolutionm.net/forums/images/smilies/wink.gif)
#9
Evolved Member
That reminds me, note to tephra - have you looked at modding the code for a soft rev-cut, where one ignition output is disabled followed by disabling both ignition outputs 200rpm higher.
#13
I have an se an the car is tuned but was always set at 7 k an I'm in 4th gear crossing the qutermile mark it's bouncing at 7k it's maxed out right before I cross it revtaos line three times
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