low power !

Post by **Fen** » Thu Aug 09, 2007 10:23 pm

I agree, and I appreciate there was an element of sales pitch as the chap had just bought a Dyno Dynamics, but as was explained to me there are virtually no parameters you can play with in shoot-out mode in an attempt to make results as comparable as possible.

FWIW we had a dyno day on that road twice and the cars that were at both and had no modifications in between (precious few admittedly) returned figures within about 1.5% year on year despite the weather being quite different (under 3bhp on circa 250bhp output). That suggested to me it was quite repeatable.

Post by **42tt** » Fri Aug 10, 2007 3:45 am

Grizz - That sounds better what modifications have been done to the car? Also would you mind posting a photo of the dyno graph?

I know that the GIAC program is suppoused to take a standard RS6 340-350whp to 400whp.

Regards,
42tt

Post by **grizz** » Fri Aug 10, 2007 6:48 am

I've got a full milltek with no cats & a MRC remap , After doing some logs i've got a loss of 100mb of boost !

Post by **42tt** » Fri Aug 10, 2007 8:26 am

Grizz - If you dont mind logging MB002 and MB115 for a WOT run from 2000rpm to redline in 3rd gear and I may be able to help you.

Hope this helps

Post by **S2tuner** » Fri Aug 10, 2007 5:22 pm

42tt if you work for/with GIAC, then I'd rather Grizz not send you his logs/

Post by **42tt** » Fri Aug 10, 2007 5:34 pm

LOL

God no I dont I did however have their program in my RS6 on a 5day trial and I no longer have it

Post by **42tt** » Sat Aug 11, 2007 9:14 am

S2tuner - Id like to pick your brain if I may, i was wondering how accurate if at all the rule that HPx.8=Total G/s?

Also can the motronic's be tuned to allow different boost at different rpm range's? ie idle-3800rpm 1.0bar (2020mb) and 3900-redline 1.2bar (2220mb) to help the ZFHP24 survive a little longer.

Regards,
42tt

Post by **Fen** » Sat Aug 11, 2007 9:44 am

Surely you manage boost through the revs by altering other parameters - there's a maximum the hardware can achieve but fuelling and ignition can be used to hold back from that maximum.

I'm trying to remember if even my Autronic SM4 can vary boost targets by rpm and I think it can, but I just had no interest in doing it.

What the Autronic can do is vary boost targets by gear which I think would be a lot more useful in protecting the transmission from the extremities of torque.

Post by **42tt** » Sat Aug 11, 2007 10:04 am

Fen - I would prefer varying boost by rpm as it would allow you to go WOT without the worry of the transmission going BANG and once you are WOT when you get into 3rd/4th your revs would be within the high boost range.

It is just a thought not sure how it would work in real life.

42tt

Post by **Fen** » Sat Aug 11, 2007 8:54 pm

I understand exactly why you asked the question and my answer still stands - throttle position wasn't one of the parameters I had in mind. Boost is a function of the hardware but also the fuelling and ignition settings and it was those I had in mind.

Post by **S2tuner** » Sat Aug 11, 2007 10:09 pm

Boost can definitely be controlled by RPM ranges, this is how it works in Motronic at least.

Post by **skiwi** » Sat Aug 11, 2007 10:10 pm

torque is what you need to control, and the motronic only deals in torque. it would be relatively straight forward to alter boost (by fuelling/ignition) depending on the transmission range parameter. effectively you have another map for each relevant gear.

however this is not a feature of our setups and i have no idea of the ability of the motonic 7.0 to store and switch maps.

Post by **S2tuner** » Sun Aug 12, 2007 1:36 am

Motronic ME7.1.1 to be totally correct. And motronic works with torque but not quite exclusively, if you think that, it means you've spent too long reading the RS6 SSP

it would be relatively straight forward to alter boost (by fuelling/ignition

care to explain how one could possibly alter boost by fuelling/ignition please?? I'm not sure I understand what you mean with that...

Post by **42tt** » Sun Aug 12, 2007 6:57 am

S2Tuner - Have you or what is your opinion/experience with the RS6 as far as mapping 1.0bar upto ~3800rpm and then 1.2bar and more timming above that to allow a higher HP/NM figure in the upper rpm without killing the ZF?

42tt

Post by **skiwi** » Sun Aug 12, 2007 9:10 am

S2tuner wrote:Motronic ME7.1.1 to be totally correct. And motronic works with torque but not quite exclusively, if you think that, it means you've spent too long reading the RS6 SSP

actually i don't believe it is mentioned in the ssp at all?

it would be relatively straight forward to alter boost (by fuelling/ignition

care to explain how one could possibly alter boost by fuelling/ignition please?? I'm not sure I understand what you mean with that...

mmm, yes that wasn't very clear - i didn't mean that that is the primary way of controlling boost, the n75 is, clearly. i was thinking of the way the knock sensors alter the map in the ecu....

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