I don't think having a higher rev limit will help you get what you are after. It may allow you to hit 60 in second... but if taken to 9K...your power will significantly drop off.

Someone correct me if I'm wrong, but I remember reading about several members who switched their AP2 ECU with AP1's. The switch allowed them to rev to 9K, but peak power dropped off once they hit 8500K. With that said, you will accomplish your goal of hitting 60 in second, but you never get the results you are really seeking...a faster car.

 

Kenny Tran???



Is he related to Johnny???

 

get a z06, i heard you could almost do it in first gear.

 

Since 6th gear is bascially your OD, could you not change the final drive ration for acceleration, then swap out the 6th gear in the tranny for a lower ratio to drop the highway cruising RPMs??? Thus getting the best of both worlds?

 

This would be ideal. It would also be incredibly expensive. It's been brought up.

 

Is it because no one makes a taller 6th? With older VWs, you can buy a 5th gear conversion kit for $240, and the install isn't too difficult, with the exception of dropping the tranny

 

[QUOTE=vtec9,Feb 1 2006, 03:54 AM] Is it because no one makes a taller 6th?

 

Only if I dont make power above 8k.

 

Honda kinda did this with the AP2 tranny. They changed to secondary reduction ratio so that it was "like" putting a 4.3 FD in the diff. Then they lowered the ratio of 5th and 6th to maintain a highway cruising rpm similar to the AP1.

It's not the cost of the parts (if even available) that is prohibitive. It's the cost of putting them into the tranny that is. Comparing this to "older VWs" is inappropriate. Removing, dismantling, re-assembling and re-installing our 6 speed is not a "walk in the park".

 

How the heck would it add up? What else are you going to add to it? But most importantly, how does improving 0-60 performance help any *real* performance? It would actually make the car perform worse in the ways you would really use it.

Gearing is a multiplier of engine torque. The end result is torque output to the wheels which mirrors power. Power is simply the speed at which engine torque is applied to the drive shaft. Simply put, increasing the gearing advantage improves power and "torque applied to the wheels".

Some would consider this important for an engine that doesn't produce any torque to begin with. Better get multiplying.

Yes, taller gears will push the 2-3 shift outside the 0-60 test but why would you possibly care? The only time 0-60 times are indicative of real world performance is when you drag race (think drop-clutch or slipped clutch). Burned tires and/or burned clutch. If you're not driving like that, your real world acceleration is way off from that published test.

All you should care about is how the car performs at real world RPMs and real world scenarios. At the track, this means get the car up to the sweet spot and keep it there. On the street, you most likely run from a roll if at all. Once at speed, you just downshift to keep the RPMs good and row through the gears as needed.

If the 0-60 was relevant at all, I'd be curious to see test results that measured the negative aspects of taller gears versus the time saved by not having to shift. I suspect it would be a wash at best. Let's say it was a wash. Then, your 0-60 time would remain the same so every time that came up in your life, you're okay. But all that other driving you do would be worse off b/c you've given up the gear advantage and you will eventually have to do the 2-3 right?