When I floor the GT2 in first gear it seems to hit the rev limiter at about 6200 not 6800. If i run it up easy in 1st it goes till 6800. In the other gears 2-4th it hits at 6800. What's happening? Is the tach not catching up to the motor? Has anybody experienced this ? thanks for the help. carl

 

That is the case with the GT3's the tach isn't as fast as the engine, so even though it states 6200 it is really 6800.

 

1st gear limiter is different than the rest

 

Has anybody else noticed this?

 

In a tiptronic it is different, but not in a manual.

 

The rev limit for first gear is lower than in the higher gears. And, I think this is a good thing! I've noticed it several times.

 

In a 6-speed the limiter is the same in all of the gears.

The problem with 1st gear is that the actual engine RPM and the analog cockpit RPM will not read the same when operating at or near WOT. The actual engine RPM is where the limiter is, and the cockpit analog gauge will lag considerably in 1st...so much that the engine is at redline when the tach reads 6000-6200 rpm. The rest of the gears don't create this problem.

 

And if your car is chipped , the rev 6250 rpm limiter is sometimes hit when the slow-poke tach reads 5600-5800 rpm in first gear !

 

The GIAC chip raises the redline, so it's easier to get more rpm on the tach prior to the engine's limiter.

I've seen 6400 rpm at WOT in 1st on a friend's Stage 2 without any limiter action.

 

Whoops - thanks for catching my typo. Meant " 6750 " .

 

Then what your friend's engine is really revving to and banging against is probably 7000 rpm or so , following this " lagging tach " thread .
Not interested in floating a valve in a car that is so short to begin with in 1ST gear - I prefer to keep the redline where it is stock. Change the gears, not the redline if you want more MPH in first gear .

 

Hard to say. I did not hit the limiter with the tach at 6400 rpm, and EVO claims just a couple hundred rpm bump in redline. That bump may be just enough to allow the tach to catch up to the engine's new limiter.

 

The redline on an '02 Turbo is 6600 rpm...

 

The ECU limits first to 5900 rpm's. You see a little more because of the momentum getting there. If the redline was 6750 in first you would be up over 7100.

 

Chad , we had this thread going in the same direction about 18 months ago.
We all drove our cars slowly enough in first gear crawl to know that the limiter does allow 6700 rpm in that gear. Then someone said there are two ECU limits in first , depending on torque management .
So someone like Porsche PhD or Sol , what's the real deal ?