We have a device in Taiwan which raises the boost a little bit and also helps sustain the boost for longer while also helping it kick in sooner.

Its not a tuning box and it doesnt mess with the ECU in anyway.

100s of people with 2.0tsi, 1.8tsi and the 1.4tsi have posted amazing results with just the device alone and even more amazing results with a remap added.

The dealer in taiwan tests on dozens of cars and posts vag-com logs with the results.

Anyway last week a yeti was tested with the 1.2tsi and it gained 12bhp and 1.8kg-m of torque........ more importantly peak torque kicked in 300rpm earlier than stock!.

Results here:

http://vw-audi.tw/index.php?showtopic=62418

The Tuner thinks that a remap will net 150bhp+ as the turbo is only boosting 1.15bar for these results.

I think its awesome that torque kicks in sooner than stock.

EDIT

Larger pic of the vag-com log

Edited 22 December, 201015 yr by smellybumlove

There have been several tests which give the standard 1.2 TSI engine between 115 and 125 Bhp and Torque between 190 to 200 Nm.

So what does this "device" bring extra?

The results are right above you in the picture.

STOCK

122bhp

19.7kg-m

AFTER

135bhp

21.5kg-m

More importantly more torque kicks in sooner than stock.

If the engine designers thought it was ok to have more torque earlier on surely they would have done it from the off?

Maybe they engineered the original torque curve to be sympathetic to the clutch, flywheel and gearbox.

I for one would be cautious increasing the power output of an already highly strung engine.

What is the device and how does it work? Does it spoof the boost pressure data on it's way back to the ECU?

I for one would be cautious increasing the power output of an already highly strung engine.

???

105PS from a 1.2, I make that about 85bhp/ litre which for a forced-induction engine is hardly shattering the world. The engine/ drivetrain is designed for a number of tollerences and has to be able to perform in all of the expected markets; so a 1.2TSI pulling a 1200kg trailer up a 1:8 hill in the Sahara needs to be kept cool and the drivetrain needs to be working within defined tollerences of force. Occassional 'boosts' at 35C OAT in the UK with a few people on board from a remapped engine is hardly going to have pistons coming through the bonnet!

I've never looked back since having my A2 TDI remapped 4 1/2 years ago, better performance, driveability and no reduction in economy. If I was towing a caravan through Death Valley it might not have been a good idea, mind...

If the engine designers thought it was ok to have more torque earlier on surely they would have done it from the off?

Maybe they engineered the original torque curve to be sympathetic to the clutch, flywheel and gearbox.

I for one would be cautious increasing the power output of an already highly strung engine.

What is the device and how does it work? Does it spoof the boost pressure data on it's way back to the ECU?

This engine is not highly strung at all, its very strongly built and only pushes under 1 bar of boost stock.

Check the video of the 1.2tsi on youtube, it uses a very strong bottom end.

From what i have translated (so not 100% sure im right) it alters the map intake signal to the ECU and also has some control over the wastegate and blow off valve.

There is no danger to the car as the stock ECU fuels for it, there are 8 settings saved on the device from H1 to H8, the higher the number the higher the boost.

Most of the VAG cars seem to perform best with H4 or H6.

There was a long discussion in chinese on the forums about the K03 turbos being able to hold this amount of boost for so long and then the issue with timing.

But for about 2 years now 100s of people have been using it without any ill affects, from 1.4tsi golfs all the way to an Audi RS4.

I am sceptical myself but the dealer is down the road from me and offer a money back guarantee within 2 weeks of buying it, the device is also easily removed so if the worst was to happen..... your warranty should be ok.

This engine is not highly strung at all, its very strongly built and only pushes under 1 bar of boost stock.

Check the video of the 1.2tsi on youtube, it uses a very strong bottom end.

From what i have translated (so not 100% sure im right) it alters the map intake signal to the ECU and also has some control over the wastegate and blow off valve.

There is no danger to the car as the stock ECU fuels for it, there are 8 settings saved on the device from H1 to H8, the higher the number the higher the boost.

Most of the VAG cars seem to perform best with H4 or H6.

There was a long discussion in chinese on the forums about the K03 turbos being able to hold this amount of boost for so long and then the issue with timing.

But for about 2 years now 100s of people have been using it without any ill affects, from 1.4tsi golfs all the way to an Audi RS4.

I am sceptical myself but the dealer is down the road from me and offer a money back guarantee within 2 weeks of buying it, the device is also easily removed so if the worst was to happen..... your warranty should be ok.

Aren't wastegates and blow off valves now history. I thought the turbo vanes have been "variable" for many years.

tom

Edited 22 December, 201015 yr by Sanqhar

In general, only diesel engines use variable geometry turbos. The exhaust gas temps are very high in petrol engines, and that makes the variable turbos for petrol engines very expensive. As far as i know, only the Porsche 911 turbo and a few other petrol engined cars use them. In "normal" petrol cars, wastegates, and recirculating valves/BOV are still in use.

Ok some more useful information.

The data for times and BHP is collected from a P-box (i think its the asian driftbox?) which has a GPS sensor.

Anyway on all the new 2.0 TSI cars (scirocco, golf gti, passat etc.) they register 160-170bhp on the same unit, i guess this is a wheel value.

They Yeti its registering 135bhp with the same device......

Of course the 2.0tsi's make 10kg-m more torque than the 1.2tsi, but regardless this is very impressive.

Also looking at the power curves of the little 1.2, peak torque is reached much earlier than on the 2.0.

Only reason im mentioning this is because i have been driving rather 'spiritedly' around town recently in 'S' and cant help but notice that theres a lot of oomph in the first 3 gears, alot more than what the specs say.

Im so looking forward to getting a remap done, word is that it the siemens ECU will be unlocked early next year

Maybe once the remaps start flooding the market, people will be more interested in the little, economical, enviromentally friendly 1.2tsi that can put out 150bhp

The "box" sounds like a tuning box of some sort, but if it were me, I'd really want to know what was inside it and generally how it gave any extra.

So the power curve quoted wasn't taken from a rolling road, but some sort of accelerometer device, or have I got that bit wrong?

I'd be interested to see what connections the box has to the engine loom, to see what it is interacting with.

No doubt the 1.2 is a clever power unit.

The "box" sounds like a tuning box of some sort, but if it were me, I'd really want to know what was inside it and generally how it gave any extra.

So the power curve quoted wasn't taken from a rolling road, but some sort of accelerometer device, or have I got that bit wrong?

I'd be interested to see what connections the box has to the engine loom, to see what it is interacting with.

No doubt the 1.2 is a clever power unit.

Only has 3 or 4 plugs, none of which go to the ECU or the engine as such.

It connects to the MAP sensor and other connectors controlling the turbo.

It lies to the MAP sensor and controls the turbo at the same time, if you look at the vag-com readings the timing doesnt lower or get messed around with at all.

I guess in essence its a boost controller but designed for VAG cars.

it only gives a 10% improvement, a proper remap would give about 20-30% more power.