There are lots of topics regarding re-maps on the forum but very few mention the effect of re-maps on fuel consumption.

I am not after ultimate power but want good overtaking capability combined with good/improved consumption at 60/70 mph cruising. Some companies seem to quote up to 185bhp for my PD140 but around 170 would seem a reasonable compromise.

Some of the ones usually recommended on here are RS -Tuning,R-Tech and the ubiquitous Shark.

Has anyone had re-maps and actually calculated the difference in consumption rather than claimed figures, Think that Swift tuning have the biggest claim of up to 40% increase in power or improvement of 20% in consumption.

Real world figures welcomed please or am I after the Holy Grail?

First thing, ignore all the peak power figures - these are completely meaningless if the delivery is peaky. The shape of the curve (or in fact the area underneath it) is far more important that the peak figure.

Oh, and what makes the car feel quick (ie accelerates well) is the torque, not the power, but everyone seems fixated on power figures for some reason.

Anyway - to answer the mpg question; yes, its not possible to get "something for nothing" in that more power generated can only be with more fuel burned, the reality is that the engine is not an "on /off" device, so although you've got more output, you're not using it 100% of the time, and the maths gets interesting in that you get up to your cruising speed quicker.

Bottom line with my car at stage 1, it uses more fuel when you're going nuts (as you'd expect) but overall the mpg average did not change.

Hope that helps?

and the maths gets interesting

Good post, however I would love to see the workings...

In my signature is my fuelling since I bought my car. I had my remap done by Shark via the STS kit at the beginning of August. As you can see it has had no affect on my mpg. I have managed a personal best with the remap though. Before anyone says it, I use the extra bhp

In my signature is my fuelling since I bought my car. I had my remap done by Shark via the STS kit at the beginning of August. As you can see it has had no affect on my mpg. I have managed a personal best with the remap though. Before anyone says it, I use the extra bhp

Thanks for this. Few questions. Did you go for stage 1 tune or ask for economy from Shark? As it was done remotely through STS, did they give any indication as to performance improvement? Which engine is your Octavia?

Thanks

Thanks for this. Few questions. Did you go for stage 1 tune or ask for economy from Shark? As it was done remotely through STS, did they give any indication as to performance improvement? Which engine is your Octavia?

Thanks

I asked for economy

Not sure exactly what the extra bhp is but I'm guessing 25-30. There is a big noticable difference as my engine is only a 1.9 105pd. It picks up much better at 70 now as well as over taking is much easier. Very happy customer

I also have a Shark stage 1 on swmbo's PD140, I requested a smooth curve with linear almost common rail delivery. They didn't disappoint, initially the car seemed slower but then I looked at the speedo and realised I was doing.........well a reasonable speed. Figures are esitmated but the torque is neighbourhood 280-290lb/ft and don't I know it, another noticeable difference is prior to the map the power would die at 3500k, know it keeps pulling to the red line. Regarding mpg, honestly I don't think there is much difference, the problem is, when you have the extra power you tend to use it, so any economic improvement is cancelled out. If you are not in any hurry I can do a couple of back to back runs under the same conditions remapped and stock and let you know the findings?

My Shark map has made no noticeable difference to economy to be honest. With the Fabia when I had that done it made the economy levels 'broader'......worse when nailing it and better when not, but on the Octy if there is such a difference then it's negligible. I was getting about 450 miles to a tank before and have done afterwards, although at 40k I've just had all the filters changed (oil, fuel, air, pollen - dealer reckons they're fine till 60k which I think is nonsense based on the number of cars I've personally serviced) so I'm keen to see how that affects my economy as it's my first major service since the map.

In essence it makes the car so much nicer to drive. The power is there now and making swift progress is much more effortless. Additionally with the Shark map the power is very linear and not all in one big dollop. So if you do want to rev the car quite hard it does reward in that respect.The mapped Fabia does not - anything above 3.5k is a waste of time as the torque tails off rapidly, and that's a custom Jabba map too.

Edited 8 April, 201214 yr by Chrispy

I also have a Shark stage 1 on swmbo's PD140, I requested a smooth curve with linear almost common rail delivery. They didn't disappoint, initially the car seemed slower but then I looked at the speedo and realised I was doing.........well a reasonable speed. Figures are esitmated but the torque is neighbourhood 280-290lb/ft and don't I know it, another noticeable difference is prior to the map the power would die at 3500k, know it keeps pulling to the red line. Regarding mpg, honestly I don't think there is much difference, the problem is, when you have the extra power you tend to use it, so any economic improvement is cancelled out. If you are not in any hurry I can do a couple of back to back runs under the same conditions remapped and stock and let you know the findings?

Mine is the PD 140 so a comparison of remapped and stock would be useful especially if it is a stage 1 remap. I'm not overly concerned about top end power but overtaking capability on A roads would be really useful. Thanks

In essence it makes the car so much nicer to drive. The power is there now and making swift progress is much more effortless. Additionally with the Shark map the power is very linear and not all in one big dollop. So if you do want to rev the car quite hard it does reward in that respect.The mapped Fabia does not - anything above 3.5k is a waste of time as the torque tails off rapidly, and that's a custom Jabba map too.

Notice that your car is the VRS as to my PD140 but at what revs does the power seem to kick in. (Again thinking of overtaking on A roads.)

Thanks

If companies are quoting 185 for a PD140, they're either being 'optimistic' or your turbo won't last very long - it'll be one of the two

I'm a PD140 owner, so feel confident in what I'm telling you...

Mine made 183bhp/298lb/ft on RS Tuning's roller, stage-1 Shark map - no other engine mods apart from a Pipercross air filter. That was then showing to be over-boosting as the loaded map was not designed to provide this sort of BHP output. Expect around 280-290lb/ft of torque. The turbo gave up a few months later.... (not blaming the map for this by the way!!)

On the economy question, it's the same as the others have said. When you're making progress, you'll do so with less effort and more speed. If you travel along the same route after the remap with more pace than you did when the car was standard, you'll be using more fuel. That's what it basically comes down to

And you'll likely use more of the performance, perhaps more of the time. It wholly depends on how you use it. But on a run, you're likely to achieve better figures. The mapping is more tailored to the car and for UK fuel for a start, rather than a compromised map loaded at the factory, to cover any number of possible scenarios. To give you an idea on overall economy I did a 170 mile Manchester to Birmingham round-trip the other Saturday - mostly cruise at 80mph, 51.5mpg (brim-to-brim calculated). And mine isn't exactly standard...

As such, I'd recommend a Shark map wholeheartedly. I've used several companies in the past, with a variety of turbo'd cars - and this one feels the best of them. There are other companies out there who are as good, I've no doubt - but choose carefully :yes:

Hope that helps.

Mine made 183bhp/298lb/ft on RS Tuning's roller, stage-1 Shark map - no other engine mods apart from a Pipercross air filter. That was then showing to be over-boosting as the loaded map was not designed to provide this sort of BHP output. Expect around 280-290lb/ft of torque. The turbo gave up a few months later.... (not blaming the map for this by the way!!)

I don't understand this. If it was over-boosting and it wasn't due to the map what was causing it?

My mate had a Golf PD 140 with Revo stage 1 and it was as quick as my remapped CR vRS but I believe those pd 140s are prone to turbo failure so personally I wouldn't bother.

Edited 12 April, 201214 yr by Guest

I stand by my comment. Turbo issue was VNT mech related. There's a full thread on it with all the details, if you want to have a look - runs to about 5 pages.

PD140 turbos are somewhat of a known failure point, they're certainly seem to fail more often than other Skoda setups, compared with the unit fitted to the Mk1 Fabia vRS for example (KKK unit). Hence the advice not to chase aggressive figures with a map. I wouldn't be asking for more than 170 from a stage-1 map, with the standard turbo fitted.

Ive had several cars remapped by Jabbasport, including 3 Diesels, 2 Octavias & a Superb. All went better, & when driven "normally" mpg was definately better, I would guess 5-10%. When thrashed it was less than before but the car becomes much more driveable.

As others have said Ignore the headline figures, they are pub talk & sometimes a work of fiction to get you to shell out. Also beware on Diesels with having too much torque mapped in, high torque is nice but it eats clutches & isnrt really neccesary. Its the look of the curve on the dyno print out thats the most important thing, a smooth curve equals a nice car to drive & with a wide spread of power is usually a quicker car on the road.

Ideally get it mapped on a rolling road, its a good way to optimise the map & gives the tuner a good way of checking if anything is wrong with the car, a base run pre mapping will confirm if the cars delivering what it should. If someone just downloads a map onto your car if something isnt correct on the car you wont get the best from it, for the small amount extra its really worth it.

When youi collect the car after mapping & put your foot down it should bring a smile to your face but when testing it also do some very slow smooth driving & vary acceleration, times on & off the throttle to make sure it runs smoothly without any hicks or stutters.

Lastly "it really is worth it !!!!!"

Prior to getting my stage1 remap done on my PD140 I only achieved 47mpg-50mpg if on a long run, now I can get an average combined of 49mpg and 9 out of 16 fill ups I've got more than 50mpg.

All figures are calculated and recorded in SpiritDeMonitor in my signature. My overall is mpg is quite low due to many miles of towing at 25mpg-30mpg.

I've found driving the same roads at the same speeds see's an improvement but if making progress don't expect to see an improvement. I'll be honest I was hoping for an increase while towing but didn't see any increase although I did see an improvement of acceleration when needing to overtake slower moving vehicles

I've had mine on Sharks Rolling Road and it made 288ftlb & 170bhp. I had the same response as vRS-Pagey, my car felt so much slower once mapped but that was down to how smooth the re-map is. I do also have a de-cat & panel filter fitted.

My RR Graph

And its nice and clutch friendly I didn't have any trouble when towing the caravan over the last 700miles

I've read that the only way you gain MPG on a remap (i was on a renault forum with the same topic) is by the fact that you are running more torque therefore if you do want to overtake you don't need to mash the throttle or drop a gear to do so but if you have less torque you'll most probably need to drop down a gear giving you higher revs and still need to mash the throttle to get there(full throttle + going down a gear into higher revs = more fuel being burned) also talking my mate who actually maps high HP jap cars and also standard jap cars. He Has also told me in past they all run so safe on fuelling that on cruise you do run richer than you should. By leaning it out a bit and advancing the timing you gain power and economy.

My pd140 has been remapped by GHE tuning using the AMD tecknik stage 1 map. I also have a pipercross panel filter. Power delivery is smooth but fuel economy has dropped on urban runs considerably. But extra urban it's seems to use a whole lot less on cruise. Getting to the speed limit is fun and overtaking is just so much easier. And the best bit is the car isn't even trying

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I am here: http://tapatalk.com/map.php?gzikoc

Edited 13 April, 201214 yr by Mattovplymouth

Definitely get better economy out of my stage 1 Shark map if I drive sensibly. First tank after remap was 46.4mpg, but was putting my foot down a bit, as you would. Second tank was 56.2, the highest I've ever had, next was 55.4, next was 54.4. Before remap, I was getting 49-53, so 8-10% increase would not be unreasonable, but it depends where you drive and on what roads. Def a good increase on motorway cruising; that's where I seem to get the biggest improvement.

So I would say you'd get a decent increase in mpg if there's a lot of steady throttle driving, and less or no increase if there's a lot of slowing then accelerating.

Mine is the PD 140 so a comparison of remapped and stock would be useful especially if it is a stage 1 remap. I'm not overly concerned about top end power but overtaking capability on A roads would be really useful. Thanks

The overtaking prowess now is comparable to my vRS even running at stage 1 (petrol). I would suggest contacting Shark and mentioning my name as it seems you are after the same performance as I was, they could provide you with the same map as mine?!

I stand by my comment. Turbo issue was VNT mech related. There's a full thread on it with all the details, if you want to have a look - runs to about 5 pages.

PD140 turbos are somewhat of a known failure point, they're certainly seem to fail more often than other Skoda setups, compared with the unit fitted to the Mk1 Fabia vRS for example (KKK unit). Hence the advice not to chase aggressive figures with a map. I wouldn't be asking for more than 170 from a stage-1 map, with the standard turbo fitted.

With this in mind, I asked Ben for a map that was more linear in it's delivery and not overly aggressive after all the PD140 pulls well from standard, I was just after an improvement in delivery which I definitely got it, I'm not in to chasing figures but my best guess would be that I have approximately 170-175 maximum, but tbh it's all about the driving.

If however, the inevitable happens and the turbo 'pops' I will go hybrid and have some fun......

Steve, is the wing mirror on yet? :think: