Newsh's S2 Avant!

[newsh]

Mmm

[newsh]

Well we still have this car in the family as my son now drives it

He's had a bad misfire for a while now and this evening we finally got a chance to do the TFSI coil pack conversion. Thanks to help from Driftin Joe sourcing coils, Alex Error404 for the loom and Dave URS4 for advice. The car now runs beautifully (better than it has for ages I'd say) we are chuffed
ImageUploadedByTapatalk1382480468.183722.jpg

[Rusty]

Don't forget that you should get the map tweaked for coil dwell time.

[newsh]

Yes, I'm thinking it's not boosting as much as it should either, about 12psi - 14psi depending how you stomp on it. ECU is stock.

So long since I drove a car with a stock map.

[Christophski]

Whats Coil dwell time and should a homefried car be remapped if its had this coil conversion?

[andy10v]

Whats Coil dwell time and should a homefried car be remapped if its had this coil conversion?

The dwell time needs tweaked.

http://www.s2forum.com/forum/newrepl...reply&p=692577

On any tune. On stock as well.
The 2.0 TFSi coils need about 2-2.5ms depending on voltage for a good strong spark (tested to 700+ hp).

The stock coils and calibration is 4+ ms.
Does not matter if it is aftermarket or not, you change the component, you must change the tune.

If you don't change the tune, you reduce the service life of the coils because you are running them outside their specifications.
I have also had a few people who wanted to just keep stock software and use these coils. And I do this for a small fee, no problem.

The biggest problem is in colder climates. Like here (and in Russia and the Ukraine) below -20-25C cars simply don't start anymore with the stock calibration on the TFSi coils - because in stock calibration there is HUGE dwell time for starting with low battery power, and the TFSi coils just don't work anymore at all with that. Change the calibration and the car will start on turn of the key. I have already "fixed" about 20 non-starters like this in cold weather.

In the UK - you will never have such temperatures, so you will not have this problem, but the coils will still last less. The question how much less is an open one - on my cars, and in colder winters the 1.8T coils with the wrong calibration failed after 2 years.
The 2.0TFSi are more resilient, but there is no denying that running them outside their spec definitely affects their service life. How much exactly - this is hard to say without laboratory conditions.

[Christophski]

Cool, cheers for that Andy

[Rusty]

0.8 to 1.1 bar is correct for a stock ABY.

[newsh]

0.8 to 1.1 bar is correct for a stock ABY.

Cheers

[Error404]

Glad the harness helped you out dude

[newsh]

Very tidy

[Rusty]

His easy and how much was this conversion?

[newsh]

Cost about £230 IIRC

[newsh]

Oh dear

[fzr phil]

oh no!
sorry to see that Newsh, hope nobody is hurt.
Phil