Can gear ratios be increased?

Hello after a long break. I have been using it for a long time because I have learned many tricks about my 307sw car and learned how to overcome chronic diseases.
But there is something that gets stuck in my head. Engineers who designed vehicles with a short ratio gearbox worthy of the vehicle, which is heavier than the 1.6 atmospheric gasoline engine. I mean, the last gear is not enough, I think. The 5th Gear goes 100kmh at 3000 rpm.
Is it possible to increase this? Should there be a change in the differential around the differential without touching the gears or just the 5th gear ratio?
Are there any concentrated places in the big cities producing this kind of change?

If you do not intervene directly in the 5th gear gear, wherever you intervene, you will affect the performance of the vehicle in all gears. I don't think this would be good. If you change the gear ratio, you need to remap the ECU. So I think it's a bit tricky.

hmm, because the demanded power will be in phase, you may need adjustments in the ecu power torque curves.
Let's say we achieved an increase of 10% or 15%, that is, we did 115, not 100kmh, at 3000 rpm. Does this make a huge impact, can you explain a little?
For example, I know that 1999 nissan primera made 120 at 3000 rpm. the torque and power are a bit lower than our 307. If that vehicle is walking, won't ours walk well?
I'm asking friends in Turkey also ha this transmission and differential (differential) is one of the major cities in experts Have? how do we do this work?

Since I have a 5th gear problem, I want to ask me, whatever the gear or speed ratio is, when it is enlarged, does it not drop in the clutch then?

[QUOTE = colonel] hmm, since the requested power will be in phase, you may need adjustments in the power torque curves of the ecuador.
Let's say we achieved an increase of 10% or 15%, that is, we did 115, not 100kmh, at 3000 rpm. Does this make a huge impact, can you explain a little?
For example, I know that 1999 nissan primera made 120 at 3000 rpm. the torque and power are a bit lower than our 307. If that vehicle is walking, won't ours walk well?
I'm asking friends in Turkey also ha this transmission and differential (differential) is one of the major cities in experts Have? how do we do this work?
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Roughly, if you can drop 1000 rpm, i.e. you can rotate 2000 rpm at 100 km / h, you can provide a fuel economy of 10% in theory and 6-7% in practice. But you should also consider the presentation. If the roads are as straight as they are here, this is logical but in the new version, even with a small slope, the vehicle will ask for gear. In this case, you will probably return your winner in that gear change.
Koliva 2013-05-19 07:15:04

In fact, I was wondering about this situation. I even asked a friend named macigperformance. I can't understand this sadness of not being able to understand why Peugeot did it. I was thinking of a gear shift that would reduce the revs in 5th gear. Those who do drag would wear a short gearbox or something.

[QUOTE] Now, the event that the friend is talking about says that the vehicle is going at a speed of 100 km at 3000 rpm. Let's make a simple calculation;

With the vehicle loaded up to 2 tons (station wagon) there is an engine that converts it with 3000 rpm. and this engine keeps the vehicle at a speed of 100 km .. to achieve this, it turns 3000 revolutions per minute. so it's sagging outside safety limits .. but you don't have such problems in the car because of the gear ranges it is long ... I felt strange in my first gti experience but these vehicles are like this ... very important..
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it seems more logical to think of this work between the gearbox and the axles, not at the gearbox. The first thing that comes to my mind is the presence of a differential but suitable parts.

I think your tool is chip tuning or something

yes i got the answer but i still need expert on peugeot and gearbox. Actually, I didn't know if my Koliva master would help.

[QUOTE = Honor] I think the simplest way is to change the diameter of the tires, if you change the total wheel diameter, you can catch the difference of 15% very easily .. but you have to adjust the vehicle's km counter .. [/ QUOTE]
I thought this was the first time but this time the steering wheel will not turn until the end and it will rub against the hood in bumps and pits. money paid for larger wheel? In addition, the rolling resistance of the wheels will increase, it will be reflected in the fuel even more.

Write us here if I find out if a development forum wonderfully helpful :)