Polo Dyno Day - 9th August!!

[Guy_H]

I'm back - we are busy! (and Alex just got back from Skiing) - soooon

[Guy_H]

I started sorting through some of the data last night - we have 25 + sets of data - its quite tricky from this perspective to compare car to car - (doable) but we have to find runs that start at the same point & finish at the same point to get the closest matched graphs (some power runs contained 130 data points, some only 90 - quicker ones).

I have posted some of Rhy's up on Ozvolks (its automatic & resizes them for me) between his runs 2 & 4 where we deliberately tried heatsoaking his car & saw a drop off in power of ~ 20kw.

You can see the Boost & MAF readings & what happens when the intake temps rise.

Now some interesting data from all this (remember - Ambient temp was 17 - 20 degrees that day)

The recorded top speed on the power runs (3rd gear) was ~98mph - all cars achieved virtually the same.

Intake temps ranged from a deliberate heatsoak run on Rhy's run at 97 deg C' to Eddy's car which hit a maximum of 39 deg C on any run.

Mass air reading were all pretty good, indicating your MAF sensors are all in good shape.

Boost - Cars with a downpipe / exhaust made more boost than cars without - hence the wheel power gains.

I'll try to put together some good comparisons over the next few days, now my graphing skills are up to date.

All owners are free to get a full copy of their data (We have converted it from ECU Explorer to CSV or Excel files) so you can plot graphs until your heart is content.

If anyone does not want their data published - let me know!

[VW GTI]

The recorded top speed on the power runs (3rd gear) was ~98kmph - all cars achieved virtually the same.

Thanks for all that Guy

But... should our cars be doing closer to 160kmph in 3rd? 98 sounds like 2nd.

[JustCruisn]

98 miles = 157.715712 kilometers

[Guy_H]

Ahh - correct.

ECU explorer (APR's in house tool that we used) has the temp's set to F, and the speed set to Miles

[GT3]

So what's the consensus on the stage 2 file? Has anyone else loaded it and if so, what are their thoughts and observations?

I'm afraid Eddy's "she kicks like a mule" folksy comments lack, ...well, suffcient detail

Personally, I'm not a fan of power kicking in hard early only if it dies in the a*** in the upper RPM range. It might feel great on the street where low down power is more noticable - but on the track you need to maintain and hold power in the upper RPMs, particularly if you want to maintain high speeds on the straights.

[Guy_H]

Firstly I think we need to call it a Version 2.0 file (not a stage 2 file) - and at the moment, only Eddy is running it. need to load it into Sams car next.

I'm also inclined (from the data we have) that it will still work the same on a car without exhaust / intake.

[RhysQ]

I'm also inclined (from the data we have) that it will still work the same on a car without exhaust / intake.

well Guy, you know who will be more than happy to test that out for you

[Guy_H]

Sounds Good!

[VW GTI]

Firstly I think we need to call it a Version 2.0 file (not a stage 2 file) - and at the moment, only Eddy is running it. need to load it into Sams car next.

Now that I have my license for another month at least, I shall make some time to come see you Guy

[DaveMack]

well Guy, you know who will be more than happy to test that out for you

And ... if you need someone closer than Rhys ... mine is available.

Dave

[RhysQ]

And ... if you need someone closer than Rhys ... mine is available.

Dave

back off Dave! I've called it

"i put bomb under your house and blow you to f**king sky"

[Guy_H]

Anyone is welcome to try the file, just call first before you drop over

[Eddy]

So what's the consensus on the stage 2 file? Has anyone else loaded it and if so, what are their thoughts and observations?

I'm afraid Eddy's "she kicks like a mule" folksy comments lack, ...well, suffcient detail

Personally, I'm not a fan of power kicking in hard early only if it dies in the a*** in the upper RPM range. It might feel great on the street where low down power is more noticable - but on the track you need to maintain and hold power in the upper RPMs, particularly if you want to maintain high speeds on the straights.

Hoyhoy.
Neil, she goes well all the way. I highly recommend the version2 for that bit more.

[GT3]

Hoyhoy.
Neil, she goes well all the way. I highly recommend the version2 for that bit more.

Thanks Eddy - sounds like it could be worthwhile. Be good to hear the feedback from others who load version 2, especially those without exhaust/FMIC. ..lock and load guys and let us know