The tach gauge says redline is about 6500 rpm in my '03 TT. My question is now that I have upgraded to a Stage 4 system with the GIAC flash, has my redline number changed? Can I push a little more or not? I was running around with a friend's 575 Maranello and rev'd a little too high b/w 3rd and 4th, but the "rev limitor" didn't seem to kick in until a much higher rpm...like 7000+

I don't want to destroy my engine, so some advise is much appreciated

 

With your upgrade, the redline should be around 7000-7200 rpm.

 

I know other tuners kick up a notch.. not sure about GIAC...

 

I noticed that my rev limiter hit beyond 6500 when I accidentally shifted out of 1st too late.

 

I have the stage 4 giac also.
The rev limiter is untouched unless you have asked for it to be raised. Dont worry the rev limiter cuts in just the same as pre modding it.

 

What is a "safe" rpm to shoot for? do you guys try hit the redline? I thought I read somewhere max HP/torque was something like 5500 rpm. I guess i'm asking if I want to make the most efficient/fast 0-150mph, what rpm should I shift gears? Sorry, i'm a bit of a newbie to this kind of power.

 

With my Protomotive tuning kit my rev limiter is not at 6500RPM's anymore havent found out where it is as I shift around there when nailing it but that annoying cut off is gone, thank you PROTOMOTIVE.

Bajo

 

My stg 2 FVD tuning rev's out at like 7-7200

 

I swear after my EVO stage II I'm also at 7-7200.

 

If your car is still under warranty, you should be careful when increasing the factory redline.

 

I think that we are talking about two seperate items: the redline and the cutoff.

The redline indicates the safe operating range of the engine. It is a function of the internal engine parts. You would need to lighten and/or strenghten the pistons, connecting rods, valves, gaskets, etc. to increase the redline (ie the safe operating range).

That said, the redline is not some magical speed where everything falls apart but is there to indicate the safe operating range.

The cutoff is there to ensure that you don't accidentally rev to a point where failure is inevitable. By increasing the cutoff, you risk spending more time in the danger zone which will definitely result in excessive engine wear if not failure.

So bottom line is increasing the cutoff does not increase the redline.

 

I like that thinking. That makes more sense to me. The mod's have increased my power, but I should operate in the same rpm spectrum to protect my engine. The ECU hasn't been reprogrammed to rev higher ( or require higher rev's) thanks boys

 

shift at 7000k....because if you shift any earlier, the next gear will drop to a LOWER rpm (less power)