All,

My friend has a COB Access Port for his 350z and we realized that his Rev Limiter was set to 7100 RPM (Normal is 6600 RPM). COB is claiming that it is perfectly safe to do this for moderately tuned and stock vehicles. I was wondering if this really is as safe as they say and how many other people have changed their Rev Limiters and to what value. My Exedy Stage II Clutch and Spec Racing Flywheel both stated they will not warranty the product, and that it is unsafe, if you raise the RPM to anything greater than stock settings. Evidently the clutch and flywheel might explode in the transmission housing. Thanks in advance for your replies..

~Craig

 

lol lol lol

 

7100 is safe.

 

May be safe but it is pointless as there is no more power there.

 

unless its an HR

 

^ lol hr comes stock(manual) 7500......

 

Safe, but i wouldn't hold it at that RPM for long

 

I rev mine to 7200 and I'm boosted... it doesn't make 'power' there but you will go faster in a race -- def. helped my track times.

 

Set it back to stock. As mentioned, there's no more power there, so it's pointless, on a stock car. I have the AccessPort, and I set back to stock rev limits. I saw it on the dyno, when I wanted to see where I was at.

 

There might not be higher 'peak' numbers there, but the higher rev limit ads more area under the curve which will help drag times and possibly even win that close one. But yes it should probably be put back to stock unless you're drag racing.

 

Helps on the roadcourse too.

 

ill add my usual and useless drivle to the thread...

it sounds mean as hell in 1st at WOT at 7100 w a JWT pop and test pipes.
+10000 for Cobb, verry happy w mine. Best thing ive done for the car.

 

Can the AccessPort be used on Zs (other than the AP owner's Z) to change the rev limiter? Basically, can it be passed around to adjust parameters on a different Z?

 

I don't do "my friend" threads but thanks for asking.

 

Its married to only one ECU

 

^ That's what I thought. So, then why is the OP even asking about this?

I know the AP and the Cipher can be passed around to do very basic stuff, however, like reading codes or adjusting the global timing +/- 2º.

 

I had the AP for my old WRX.. One of the selling points is the ability to move the AP between cars, but you do have to 'unmarry' it from one car's ECU before you can install/marry it to another. When you unmarry from a computer, the settings are returned to factory and can't be left in place while you tune on another car.

+1 for useless power above ~6200 RPM N/A

 

Thanks for being an adult about the question. I have Osirus Tuner and we were comparing the two. Wanted to know if that extra 500 RPM actually did anything and if it was really safe to operate that high. Thanks to the rest of you who replied.

 

Why set it back? Mine is at 7750. It's so I don't hit the limiter. It's not so I can rev that high.

 

wow....i have a built motor and only go 7k....but it is a de i guess....