Ben sent me a different map to try on tuesday. I uploaded it on to my sts and stuck it on my car. It s alot better than what it was still not 100% right though. But it pulls really good now in 3rd. Still slight hesitation in 4th and 5th though.

That's good news Paul, it means we might have made some headway into solving the problem.

I would also like to stress once again that it isn't as simple as just being a "mapping issue" otherwise every car we did would react in just about the same way. That's not to say that it can't be fixed within the map though.

Yeah ben its alot better car feels quicker now, as i say though still a slight hesitation in 4th and 5th alot better though than what it was before in 4th and 5th.

Hopefully you can work your magic and loose the hesitation all together but its a defenite improvement than what it was

Let us all know how it goes bodge. I had a go at mine the other day and checked the spark plug gaps. They were at 0.9mm, so brought them down to 0.7. Hasn't made any difference though. I did notice that the insulators on my plugs were red though. I'm sure they were white when I put them in a year ago. :yes:

Ben, I did an experiment today. I have noticed that when I drive up a hill in say 4th gear at 2800 ish RPM, the turbo will spool, then stop just as it gets on boost. It does this when you put your foot down about half way and don't move it. Is that possibly something to do with this? Obviously if you put your foot down a bit more, it will spool again and stay on boost (apart from the mild surging we're talking about.)

Ummm...

That's good news Paul, it means we might have made some headway into solving the problem.

I would also like to stress once again that it isn't as simple as just being a "mapping issue" otherwise every car we did would react in just about the same way. That's not to say that it can't be fixed within the map though.

but it was said that one of the cars that had the problem went back to standard map and had no issues so what would that indicate???

I am afraid i don't know the ecu number, how would i check? The car is running alot better than what it was anyway still not 100% thought but a vast improvement.

Yeah it was me that tryed the standard map back on the car, no surgeing at all.

Hopefully we are on the right road to sorting it though :-)

but it was said that one of the cars that had the problem went back to standard map and had no issues so what would that indicate???

It would indicate one of two things - either the problem is only apparent when the map is on due to higher boost levels/higher EGTs/higher IATs, or the problem is there but isn't as pronounced.

Furthermore people have reported this on other maps as well, not just ours. Thanks to the test on Paul's ECU we have a strong idea of what it is and how to combat it and it actually appears to be a limitation in the standard software which we need to work around in our software.

Problem is there on a standard map as well, its just almost unnoticeable.

And here we have conclusive proof - this is a standard car running the same software version as OllieH and PaulMoVRS amongst others. This is a part throttle dyno run from that car on the R&D dyno in Finland.

Ben,

Do you think you have a cure completly then mate for the surgeing issue or is it still a work in progress?

I would just like to say what ollie has said earlyier that ben has been first class in trying to solve this issue. Don't be put off by this problem if your thinking of getting a shark map.

is there any coralation between age of cars and ecu types with this ben????

maybe there was a change in sofware or ecu type that i causing the issues that are appearing now???

is there any coralation between age of cars and ecu types with this ben????

maybe there was a change in sofware or ecu type that i causing the issues that are appearing now???

Yes there appears to be a correlation and if we have indeed found the problem (another test file on it's way to you now Paul) then we can look at the other software versions and make the required modifications there too, if they are affected.

well done for finding it ben testament to the hard work you have put in

Ummm...

Ben (aka Jedi master Obi-Wan Kenobi) thanks for your efforts, will be in touch soon to bring the car in. This topic should only be seen to reinforce the quality of the Shark customer service

A lot of the ECUs are shared across the same platform. The ECU commonly found in the VRS is also used in the Leon and Golf Anniversary.

Yes there appears to be a correlation and if we have indeed found the problem (another test file on it's way to you now Paul) then we can look at the other software versions and make the required modifications there too, if they are affected.

Yeah mine certainly does it too.

It feels like it's a response issue. Almost like the signal received from the MAP sensor isn't syncronised with the signal being fed to the N75, so it ends up in this constant loop of trying to correct the boost.

It's great news that you guys are investigating this and making headway. I've read about this same issue appearing when running other tuners maps, and they did nothing about it (namely APR).

I've tried to get hold of you over the phone a few times, but it appears you are a busy man, so I might pop down next Thursday to chat more about it. My engine is essentially mechanically standard and well maintained, so it might be a good test subject! You can take it for a test drive if you like, as you can see the boost fluctuation clearly on the mechanical boost gauge (and feel it).

Ok a small update from me.

I tryed a second test map from ben this afternoon and took it for a drive. This map dosn't feel as fast as the other one i couldn't really feel any surgeing in 4th or 5th. I tryed a small test.

In 3rd gear i sat at 40mph holding the revs at roghly 3k and planted my foot it did pull well in 3rd but not as good as the previous map. In 4th i sat at 60mph and done the same again, now i couldn't feel any surgeing but the car didnt pull as hard as what i was expecting i was a bit dissapointed if i am honest. The previous map pulled better but still had a trace of the surgeing, i tryed it in 5th at 70mph and done the same again and i couldn't feel the surgeing but didn't realy feel much faster than the standard map.

Now maybe i am use to the power with the remap now but it certainaly didn't feel as fast in 4th and 5th gear as the previous test map. So maybe you have to make do with one or the other power and surgeing or less power and no surgeing. As i said the previous test map pulled better in 4th and 5th but still had the slight hesitation.

Once again though the car pulled very well from a rolling 20mph start in 2nd through the gears to about 80mph, just wished it was a bity faster in 4th and 5th. Now i am no expert in ecu remaps but i am trying to explain as best how these different maps are reacting on my car.

Hopefully ben will have some input and hopefully come up with another idea

with mine I don't realise how quick it pulls unless I watch the speedo. It's so smooth and boosts so quickly that there's no surge of power just linear, have you watched the speedo when you've driven it? Mine will spin the wheels in 3rd so must be quick

I guess your ECU will take a little while to get used to the new map and adjust?

It's a shame Shark doesn't have a rolling road?

Oh and well done Ben for putting so much effort in, this shows why people so strongly recommend you

Glad to see the problems being worked on and alot of efforts being put it.

Does this mean the maps are going to run less boost? :S

Glad to see the problems being worked on and alot of efforts being put it.

Does this mean the maps are going to run less boost? :S

Nope, once we isolate the problem we can put the boost back up to fishy levels

Nope, once we isolate the problem we can put the boost back up to fishy levels

Just tried to PM you but your inbox is full ....Im booked in with you on the 9th of april. Does that mean my map will be different aswell? (running lower boost) or will i be using the same map as previous cars? Little confused

Just an update from the Shark nerd.

We know what the problem is now as you might've guessed from our dynoprints.

Last file was just to make sure we're sure whats going on. Going slightly "backwards" was intentional, watch this space.

Big cheers to Ben for sorting this out. Looks like it's a problem which is always there, but not noticeable on the standard map.

Just out of interest Ben, what is the problem? Is it a bug in the ECU?

According to Vagcom, my ECU number is 06A 906 032 HN, with a component no of 1.8L R4/5VT G 0002. If that helps at all.