Interesting so all I need is the cable, d/l the program and a 99$ license fee (for activation?) and I'm g2g??
I'll skip the BS and go straight to answering the original question ...
I have a 0.681 5th gear in my car. P-D 5th was originally 0.744.
From looking at the BSFC charts, under ideal conditions this should reduce consumption by around 3 - 4% but only under specific conditions - 5th gear above a certain road speed.
The difficulty is that you are not always in 5th, and the taller 5th does force the use of 4th under some conditions where you could have used the original 5th without lugging. A fair and realistic estimate is that the saving is more like half of what the BSFC map suggests, i.e. around 2%, and it will only exceed this under the specific conditions of being at more than around 80 - 90 km/h steady in 5th gear without major hills. You will have to downshift to 4th more to go up hills.
I crunched the numbers based on 2% fuel savings (i.e. hardly enough to notice on a day-to-day basis) and it worked out to break even around 300,000 km, which I am now well past.
The bigger advantage is the quieter cruising at higher speeds on the motorway.
The normal suggestion has been that if you spend most of the time above approx 100 km/h on motorways then the taller 5th is good. If you do a lot of city driving then you are not going to be spending enough time in 5th for it to be worthwhile. If you do a lot of secondary roads at 80 - 90 km/h and particularly if they are hilly, the tall gear probably isn't going to be worthwhile and it will be more annoying because of forcing more downshifts.
There is indeed a large drop in revs from 4th to 5th. Basically, you do all your accelerating in 1-4 and then shift to 5th when cruising speed is reached. It's OK in 5th at motorway speed, but below that, not only is the gearing taller but the engine is too low in the revs to be in its powerband.
Overall, I like it. Just don't expect the economics to work out for a long, long time.
Great input gofaster! Unfortunatly for my job, I do. A ton of city driving. And even worse, most of my family lives in ski country (lots of hills and backroads driving). Compounded by a 300,000km break-even point, it looks like I'll stick with stock gearing. I've been researching the hybrid t-stat, and that's looking promising.
Tinker toy- spot on buddy!
Few people understand the psychology of dealing with a highway traffic cop. A normal speeder will panic and immediately pull over to the side. This is wrong. It arouses contempt in the cop heart. Make the bastard chase you. He will follow.
When did you put the egt gauge in?
I meant with my comment that you should't be asking what X upgrade will do unless you have the proper monitoring system in your car = EGT gauge...this is another reason why myself and others question your engineering degree. I will be honest, I have no clue what a "network engineering degree" is, but with your line of questions and lack of understanding it sounds to me like a network engineering degree is some sort of IT guy that only knows some theory and/or computer stuff. If so it kind of makes sense now if that is the case.
You asked the EGT question earlier, so if you haven't done that which is a detrimental part of your car diagnostics, then you shouldn't be doing a 5th swap in that car. Unless you want a car with a .685:1 5th that doesn't move because the moron engineer who installed it didn't listen to the answers to a question he asked 2 months ago, and melted the car down. I was also asking to when did you put the EGT in as if you didn't follow advice before, what makes me think you will now with this question. You want to know how to make your car better, but whenever I give advice that will help your car live, you respond with "why is it your call to allow/disallow..." If you don't want opinions from people that actually do work on these cars, then do a search of things for yourself and get out a wrench and do the work.
Video of the working egt or IT DIDN'T HAPPEN
Last edited by theman53; 02-24-2012 at 09:48 AM.
Lulz I give a **** if you want proof of my egt working. I'll still go to sleep tonight. But if your idea of giving out advicr is asking whether or not your vehicle is being monitored for pyro in order to inst all a differe gear in the transmission you should reconsider your hobby and turn wrenches elsewhere.
if WE knew that YOU killed your car because you didnt monitor it, WE wouldnt be able to sleep tonight, knowing that another retard burned down a TDI for no good reason..
the dumbest people i know, have engineering degrees.. lots of book smarts, but absolutely no common sense!
and i still dont believe 153whp was made with a VNT15 hotside..
Last edited by Glegor; 02-24-2012 at 01:26 PM.
Lol if you don't believe that my vnt15-hotsided setup didn't make 153 hp, then you *certainly* won't believe me when I sai installing pp764's is now causing my clutch rated to 330ft-lbs to slip
I still don't get how a taller 5th gear has anything to do with burning my motor up?
but, he always took everything offensively, and then we got tired of his nonsense..
he is too stubborn to take advice.. idk how many times i had to tell him a PYRO was a REQUIREMENT on a diesel, before it actually sunk in..
and he was sure he was over-fueled, but had no pyrometer to confirm/deny that.. when in reality, he didnt have enough fuel, and the car almost never smoked..
Something as important as EGT guage should not fall on deaf ears, so if you didn't have that done I refuse to help you do other stuff while your car could be killing itself.
Sorry to say this but you are either too stubborn to listen to us Or more likely too dumb to put this together as you still ask some dumb questions that have already been answered.
1. A machine with moving parts that converts power into motion.
Noun:A machine, esp. one powered by electricity or internal combustion, that supplies motive power for a vehicle or for some other device with moving parts.
Looks like the same thing to me
But thanks for looking out for me.
Who's the retard, the one going on about needing an egt gauge and speaking of definitions that he's unsure of, or the one that's asking about installing a different gear and actually using definitions correctly?
I get your point, and I've got a gauge. So chill out. Mon'.
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Lulz I love psychology; although at times, I hate it. Sorry, but I'm not posting dyno pics to appease *anybody* I realize that there are a lot of people who strongly dislike me, and there's just as many people who've dropped big moiney on big turbos and crazy (pointless) mods who are at similair power levels (often times, even less..), so that makes me a bit of a target. Alas, its a shame that some people are better at building cars than others. Everybody on tdiclub thinks inside the same box, and its humorous watching people get their undergarments into tightly woven piles when somebody who actually uses their brain and figures out more efficient ways of accomplishing things.
And I had no idea a 5th gear was 400+$... I was thinking 100-150$ tops.