Tuning the Golf 90 TSI - Whaddayareckon?

[Guy_H]

OK - now released:

Twincharger first!

Good News TSI owners - It's now released!


151kw (peak) 317nm (peak)

More importantly we are gaining 77nm @ 3580rpm & 30kw @ 3820rpm!

Price is $1800 incl GST & Installation for two programs switchable

This month it's eligible for the sale so either less 10% = $1620

Or - Pay $1800 & get all options loaded for free!

[Guy_H]

Now for the 90kw 1.4 turbo only:

Good News TSI 90 owners - It's now released!


100kw (peak) & 238nm (peak)

More importantly we are gaining 41nm @ 2560rpm & 16kw @ 6160rpm!

Price is $1600 incl GST & Installation for two programs switchable

This month it's eligible for the sale so either less 10% = $1440

Or - Pay $1600 & get all options loaded for free!

[philthy]

Now for the 90kw 1.4 turbo only:

Good News TSI 90 owners - It's now released!


100kw (peak) & 238nm (peak)

More importantly we are gaining 41nm @ 2560rpm & 16kw @ 6160rpm!

Price is $1600 incl GST & Installation for two programs switchable

This month it's eligible for the sale so either less 10% = $1440

Or - Pay $1600 & get all options loaded for free!

Good gains on the twincharger, that bodes well for the new polo GTI (and scirocco 1.4 if it ever gets gets here)

Looks like the turbo on the 90 is running out of puff very early.. Guessing it's really small in order to produce torque at low revs?

[Guy_H]

Correct Phil,

It's a really tiny turbo - But as an overall package, it makes good numbers!

[twotribez]

Did you tune the 118TSI with a DSG? As I had gearbox issues on a brand new car, I am a little scared of actually putting more stress on the box itself. What is the box rated up too in terms of torque? Has there been reliability tests?

Thanks

[Guy_H]

Yes, tested with the new 7 speed dry clutch DSG. Actually two of our three development cars are the new DSG.

Tune is well within the figures handed out internally by VW / Audi so no issues there!

[Rocket]

Isn't the limit for the 7sp box 250Nm? If so, are you not pushing it dramatically close to the limit at 238Nm everytime you hit the pedal and pass 2600-3600rpm in the twincharger?

[brad]

Isn't the limit for the 7sp box 250Nm? If so, are you not pushing it dramatically close to the limit at 238Nm everytime you hit the pedal and pass 2600-3600rpm in the twincharger?

250Nm is a rating not a limit.
eg: A crane might be rated at 1tonne but may have a higher limit/capacity engineered into it.

I don't think it's a coincidence that the 7 speed has a rating of 250nm and the torqueiest engine it is mated with (In the Skoda Octavia 1.8TSI - 118kw/250nm) outputs 250Nm as well. I would guess that after a while, when the 7 speed has proven itself, they will fit it to a "bigger" engine & surprise, surpise, it will be re-rated to suit the higher torque.

[Guy_H]

You forget about a 40 - 60 % buffer over the rating.

The rating is something published by the sales dept. NOT the engineering dept.

We know this because of testing done on different DSG boxes with upcoming stage 3 kit development!

VW have been testing the 7 speed dry clutch (via their motorsport division) with figures exceeding 500nm in "stress test" applications.

I suppose it comes down to believing the 250nm point or not!

[Rocket]

Ahh fair enough. I am aware of the safety factors used in calculating these figures, just didn't think they were that large. With efficient mechanical design, you obviously try to make the product as light/lean as you can to meet the safety factored loading conditions. Just didn't think they would be that high on such a small/low rated box.

[brad]

Ahh fair enough. I am aware of the safety factors used in calculating these figures, just didn't think they were that large. With efficient mechanical design, you obviously try to make the product as light/lean as you can to meet the safety factored loading conditions. Just didn't think they would be that high on such a small/low rated box.

You'd use "efficient mechanical design" for a race car but if it's an offering to the general public then you have to account for the lowest common denominator. Also, the design brief probably extended way beyond 250Nm but they are playing it safe to ensure they don't get a warranty bunfight on their hands.

How many times has some company released a product that has had thousand of hours of performance/endurance/reliability testing & Joe Public breaks it within 5 minutes?

[Guy_H]

Like this one:

http://www.youtube.com/watch?v=3tPxfdK5wtk

and the warning on the bottle: "Do not use for weight bearing applications!"

[logger]

95ron?

I notice in post #32 where it shows the Dyno figures for the "90kw 1.4 turbo only" it says 95RON for the fuel not 98RON.

The tech spec in the customer brochure quote Premium 98Ron being recommended for both the 118 twin Charger and the 90 turbo.

Just wondering why it would have been tested with the lesser fuel?

[zhenjie]

Just picked up a 90TSI for my old lady. Interested to hear if the APR tune has provided any noticeably real world improvements to the drive. I know the APR on my Tig was like going on steroids, but the 90tsi's tune of 16kw from a $1.4k tune doesn't seem as much value.

[pologti18t]

APR - High Performance Development for Audi, VW and Porsche Vehicles.

But look at the significant increase in torque from <2000rpm to just over 3500rpm. It would feel alot stronger driving around town.
And I would expect cruising in top on the freeway would have you right in the middle of the extra torque.

It's not about peak figures... its about the area under the curve in the dyno plots