Kevin

Stage 2 has the larger compressor wheel, and zero-clearanced. It is the same compressor stage that is in TB's old setup which is MOD's current turbocharger. (compressor>cold side)

ACE's Stage 2 ECU has had the boost tapered back.

I told you that your clutch wouldn't hold... (smile)

Felix

And here's a graph of that run:

TB993tt

Phelix
A most impressive display of data aquisition and overlaying A+

What was the ambient temp, around 10DegC ?

It would be interesting to see if the IAT is levelling off at 130mph or if it will continue to climb, at 4X DegC it is beginning to rob some timing - how does it compare to yours (Phelix) - any chance of an overlay of some of your data on top of ACE's so we can see how the boost affects IATs ?

Overall to 130mph this looks a nice package with consistant strong long Gs which I'm sure feel superb on the road

WHB Porsche

Can Jean or TB turn the data into a "real world" hp figure? Either way, it looks impressive.

eclou

9.9 s 60-130 is faster than an F430 (~10.5s)

ACEparts_com

Also worth bearing in mind the car has done a good 50K miles now. I'm very pleased with the performance. Looking at the numbers it would appear i don't need to buy a hat

I've managed to have a look at some more data
I managed 2mph to 60 and 90 (I let the car ALMOST come to a complete stop before launching it again):
2-60 4.0s and 4.5s
2-90 7.23s and 7.6s

Felix

cheers tb993tt but it's the Race Technology SW that does all the hard work. Not sure if I can overlay the data; I may have to export to excel or the like.

I thnk Alan said ambient was 6-8 deg C

here's a graph of my 60-130 time from last year.

TB993tt

Thanks for that Phelix - now I am a little confused, are you guys running the same components apart from ECU mapping ?

ACE's long Gs seem better all the way despite being heavier ? Is more boost = timing pull and less performance ?

ACEparts_com

Same components; YES.

I had my cats made some time ago so they may differ very slightly to Phelix's, and I also have Miltek exhausts, oh, and 50K miles vs. Phelix's fresh motor.

Edited to add. Although it sounds odd my car dyno'd the same as 3 others some years ago yet has always been 'quick'. I'm sure I've recorded a standard 60-130 at the track of around 11.5 seconds and it's only just pulled away from by a 996 GT2 at the same circuit. Strange.

Felix

That's been my pet theory for a while and Alan's data would seem to underscore this. In fifth Alan was showing 0.54 tailing to 0.45 g and I'm showing 0.44 tailing to 0.34 g. That seems like a huge difference to me.

Over the same periods Alan's IAT starts from 33 and goes to 42 whereas mine starts from 37 and goes to 47.

And interesting that during his boost spikes in the top end of 4th and 5th there appears to be a corresponding drop in g.

I'll be the first to admit that it's easy to try to make scenarios fit the available data.

malcolmd

At the risk of raising the obvious, I assume both ACE and Phelix used fuel with the same RON. It has been stated before that the higher boost of Phelix's ECU program (compared to ACE's) and the inherant heat soak from sustained WOT, could result in timing being pulled in the higher boost engine - diminished however by a higher RON fuel.

Phelix's and ACE's experiences are a great read. Isn't it always the case that the more information you have, the more questions you find need an answer? Still, I for one (as a potential UMW Stage 2 buyer) will be watching and waiting for you clever guys to extrapolate the merrits of the "standard" versus "lower boost" ECU porgram. Thanks so very much for sharing. Perhaps Kevin's soon to be released multi-Flash Programing for the 993tt will permit both programs for sequential testing in the one vehicle thus eliminating a whole bunch of other vehicle to vehicle variables.

Great work guys.

Malcolm.

Felix

Hi Malcolm, thanks for your kind words - sharing info and experiences is what this place is all about.

I can confirm we were both running the same fuel - Shell V Power 99 Octane MON - equal to 93 or 94 octane in the US (RON+MON)/2. Not sure what method and octanes are used in Oz.

TB993tt

Yes I had noticed that

I guess you guys would both have been using the best stuff we get around here ie 97-99RON, Optimax/Super unleaded ?

I agree that the difference in Gs are quite big and Jean will be able to tell you how much hp the difference represents - next course of action would be trying ACE's program in your car Phelix ?

Felix

Alan's already been put on notice!

Between that and Colin's IC it'll be a busy day!

TB993tt

Minivmax part deux