flat boost after 6,000 revs??

[joesgti]

Change up at 6k to avoid torque drop off and hitting the rev limiter on gearchange

so this will achive quicker 0-60 

[Hurdy]

Yup.

[Hurdy]

It is the torque rather than the outright bhp that determines the in-gear accelleration and as you will see from the graphs, that starts to drop off at around 5k revs. Changing gears at 6k revs will drop you straight back into the peak of the torque curve, wheras holding on to the death in each gear only benefits you if you are about to hit your target (ie 60mph or pass the 1/4 mile line). Also holding on to the death and then changing gear will drop you into the next gear just after you have passed the peak torque point

[Kiddfrost]

I tend to change between 5.5-6k. I love screaming to 7krpm but its pointless, I guess that's what a ctr feels like 

[joesgti]

It is the torque rather than the outright bhp that determines the in-gear accelleration and as you will see from the graphs, that starts to drop off at around 5k revs. Changing gears at 6k revs will drop you straight back into the peak of the torque curve, wheras holding on to the death in each gear only benefits you if you are about to hit your target (ie 60mph or pass the 1/4 mile line). Also holding on to the death and then changing gear will drop you into the next gear just after you have passed the peak torque point

good stuff hurdy. but i still dont understand which way will get you to 60mph or over the line fastest, if i where in my car and at the pod, and i changed at 6k through all gears, then did a re-run and changed at 6.8-7k which time would come out quicker do you think?  

[Hurdy]

0-60 it maybe the 6.8k rpm as I believe you can just pip the 60mph mark in second which negates the 0.2-0.3 seconds it would take you to change gear and hit 60 in third.

The standing qtr is a different matter. 6k to 6.2k changes would come out better for the torque curve you have, but we are only talking 0.2 to 0.3 seconds over a 1/4 mile. Still counts though

In a manual I always find a midrange gearchange around 5/6k tends to avoid the dreaded wheelspin and axle tramp :embarassed:

[speedynz]

Joe,

A few variables here.

If you want a quick timed 0-60 you will have to hit at least 6660rpm in second gear, this equates to exactly 60mph and a standard GTI will pull a genuine 64mph at the redline (7100rpm) in second gear, the speedo will be showing higher but you'll be too busy to notice.

As Hurdy said, you will avoid the dreaded cross plane gear shift into third gear which will take longer than hanging on to 2nd gear beyond peak power.

If it's a straight out 1/4 mile run then the 0-60 increment becomes secondary and you'll be losing time overall by hanging on to the gears until the high 6000's. The standard GTI produces peak power at 5100rpm (mildly variable engine to engine) and torque remains relatively constant (at around 200lbft) until 5000 rpm. Changing up at around 6000 revs should produce the best results. Hang onto the gears any longer and you will probably be slower (it's always tempting to rev the nuts off your car as the red mist decends).

Another 1/4 mile factor to consider is that because of the low gearing in third you'll have to change into 4th just before the 1/4 mile post (third will pull 91mph at the redline and you should be doing around 92-95mph across the line).

Look to run around 15 second times and you'll be doing well.

I meant to ask, are you in a DSG equipped car or a manual?

[RedRobin]

As others have said, it's the torque which matters and also what other performance mods are combined with a remap. A Forge DV plus Neuspeed Hi-flow pipes with SAMCO throughout the turbo line seems to help too.

By using the paddle gearshifts to avoid using high revs, delivers plenty of power throughout, even from 90 mph to 130 mph (autobahns ).

[john_o]

being sad I couldnt resist an overlay of the two graphs attempted with photoshop



wonder why the ED30 gets a 'burst' again at 6000rpm? would expect it to continue tailing off???

now wonder the ED30 feels so different to the std GTI