Dyno of at GT TSI

[zz2]

i dont believe anything that show says (cos its S**T).
also i think you need to remember they were using a dodge Tafe dyno.. so who knows what they have done to it.

[GTom]

i dont believe anything that show says (cos its S**T).
also i think you need to remember they were using a dodge Tafe dyno.. so who knows what they have done to it.

Hence the question... Has anyone dynoed their TSI???

I also agree that test is not very reliable....

[BarneyBoy]

Yep that's always an issue, but did anyone run a stock GTI or polo on the same day? THAT allows a real world comparison, on that dyno.

A guy with a stocky GTI got 132 ATW. Pretty impressive, I thought!

He thought his was a little high, I thought mine would have been higher (maybe on 98RON it would have been a bit higher?)

The GTI SHOULD have been about 20% higher than the GT, but who knows?

[Greg Roles]

A guy with a stocky GTI got 132 ATW. Pretty impressive, I thought!

He thought his was a little high, I thought mine would have been higher (maybe on 98RON it would have been a bit higher?)

The GTI SHOULD have been about 20% higher than the GT, but who knows?

Ok so that GTI correlates with the stock GTI up here at 129kw atw. So Barnes in my opinion, for whatever reason your car did run that ON THE DAY.
I would expect your TSI to be more like 110 or so, like my TDI, although how the two are rated, who exactly knows.

There are a HUGE number of reasons why dyno's differ, least of which for a turbo car is heat soak. We discussed this in the brisbane thread, and it was noted that cars with poor results were run hot, where as mine with what I thought were good results had a 2 hour bonnet up cooldown, where my inlet was still reading over 30 degrees on a cooler day though!
http://www.vwwatercooled.org.au/newf...t=14510&page=3
Barney, did you by chance run your car hot? Heatsoak is a KILLER for forced induction cars, and you my friend have TWO heat pumps....even harder on the intercooler, which if left standing becomes very hot and another heat source for a good 30 mins after shut down. you need to drive it and get air circulation to drop it back down, and running the car heatsoaked will destroy the power output.

[Greg Roles]

i'd get that checked out mate (the car i mean).....i can pretty much guarantee you thats not stock running a 140kw and a 149kw (161 - 171kW at the flywheel). arent MKV GTI's rated at 147kW at the fly.....thats a huge discrepancy if they are.

on the dyno up here in qld, shaneths polo gti has a few intake mods and got an 88-89kW atw (~102 at the flywheel - whilst polo gti's are rated at 110kW), whilst mine is APR chipped and ran a 122.2 atw. from all the vw's we saw here on the dyno, none were running above rated figures that i can remember (most were well under).

i think your very wrong in saying that VW under rate their power claims (especially when its only your car). why would any company do that, it'd be the same as throwing money away in lost sales?

So WHY then does my oiler rate 113 at the wheels, which sounds like a very efficient transmission to only lose 12kw from the fly, or like 10% but the torque curve Jamie and I got later on shops my car as 350nm at the wheels? VW rate it as this at the fly, so assuming the same transmission etc loss, it's putting out about 387nm at the fly. Hmmm.

VW position cars powerwise for marketing purposes, to sell MORE of the better cars! The aim is to not upset the GTI and R32 position with "lesser" cars rating close by. Geez, just have a look at the 6 cylinder turbo's and the v8 fords, the 6's are a lot closer than Ford let on, so as to try and keep the v8 at the top of the tree for sales. It's all to do with marketing.

[BarneyBoy]

Barney, did you by chance run your car hot? Heatsoak is a KILLER for forced induction cars, and you my friend have TWO heat pumps....even harder on the intercooler, which if left standing becomes very hot and another heat source for a good 30 mins after shut down. you need to drive it and get air circulation to drop it back down, and running the car heatsoaked will destroy the power output.

Wouldn't have thought so - drove to the dyno joint (cool Saturday morning), parked it for about 3/4 hr, and then had the run. I was even a little concerned it may not have been warm enough!

I'd love to have done the run on a near empty tank, as I'd liked to have filled it with 98RON and re-run the car to compare what effect the 95RON had. Dunno - most of the guys there suggested bugger all difference, but there were no bona fide experts there...

Anyone here have any idea what % difference the fuel may have?

As an aside, the TSI sounds great at 100kph right up close
Now where's that Milltek catalogue...

[h100vw]

Wouldn't have thought so - drove to the dyno joint (cool Saturday morning), parked it for about 3/4 hr, and then had the run. I was even a little concerned it may not have been warm enough!

I'd love to have done the run on a near empty tank, as I'd liked to have filled it with 98RON and re-run the car to compare what effect the 95RON had. Dunno - most of the guys there suggested bugger all difference, but there were no bona fide experts there...

Anyone here have any idea what % difference the fuel may have?

As an aside, the TSI sounds great at 100kph right up close
Now where's that Milltek catalogue...

I reckon some fresh Vpower would make a difference. That day you drove my Audi that's what is was going through at a frightening rate!! It was certainly better than the Ultimate that I usually run in it.

Gavin

[BarneyBoy]

I reckon some fresh Vpower would make a difference. That day you drove my Audi that's what is was going through at a frightening rate!! It was certainly better than the Ultimate that I usually run in it.

Gavin

True enough.

BTW, I thought your S3 ran on a liquid hydrogen/liquid oxygen mixture?