Just wanted to bounce some ideas around concerning the MTM chip.....

STTPower · 01-04-2006, 05:36 AM

I did some searching yesterday, and found a few posts regarding how the mtm chip creates more low-end power by requesting(creating) boost spikes at low rpm. I was wondering if that was a bad thing. I'm trying to think mechanically if this was bad/good due to the obvious overspool issue with k03's. At that low of an rpm, would the k03 be spinning out of range, or would it be spinning within range but just more than average? Sorry if this sounds confusing, but I think you get my point. Anybody have any thoughts on this?

S4Poor@Curbside · 01-04-2006, 05:52 AM

being said. I have a feeling that MTM & Audi try to keep all aspects of the programming to NOT put the K03's past their efficiency range. Just a guess, but it makes sense to me. Why would Audi want a company that they work with make a product that would ultimately make Audi pay for replacements for people still under warrantee? Just my $.02. Start the flaming...

Captain Matt, I be · 01-04-2006, 06:22 AM

S4Poor@Curbside · 01-04-2006, 06:35 AM

'Nova more S4 · 01-04-2006, 07:45 AM

STTPower · 01-04-2006, 08:13 AM

OSin456 · 01-04-2006, 08:29 AM

When i had the chip it would hit 1-bar at 2.2k as compared to maybe 1-bar at approx 3k for other chips. Held 1.1-1.2 and then tapered to 1-bar a little before, or @ 5k, and then held a bit above .9 until 6k and then slighlty below afer 6.5k.

The early boost build-up would not bother me mechanically (as long as it's not "spiking" more than it should, 1.2 bar). Holding boost at higher RPM's would.

SchagenWagen · 01-04-2006, 08:49 AM

Now, in midrange, things could be close. How far the limits set?. You need to examine compressor map and calculate engine consumption for air based on RPMs and boost pressure you see.
In general, I don't see anything mechanicaly wrong with quicker spoolup

MNblackS4 · 01-04-2006, 08:53 AM

I put in K04s over Thanksgiving. I've been driving around with throttle cut for the last 5 or 6 weeks.

I'll be using an MBC, TCD, and '5 bar' FPR from Vast and tweaking with Lemmiwinks. Hopefully we get good results. I'll post something when we get started and make some progress.

STTPower · 01-04-2006, 09:35 AM

I'm assuming 1.1 bar with mtm is only at WOT correct? So correct me if i'm wrong, but would half-throttle create around .5 bar? Has anyone ever tried this or calculated it before. If I can recall, the max boost for stock is around .6 or something. So driving half-throttle would never drive the turbo out of range. Am I right? Sorry if I'm just talking out of my ass, but i've been thinking about that for a while. Any feedback?

01-04-2006, 05:36 AM	#1
STTPower New Member Account #: 92267 Join Date: May 2005 Posts: 98	Just wanted to bounce some ideas around concerning the MTM chip..... I did some searching yesterday, and found a few posts regarding how the mtm chip creates more low-end power by requesting(creating) boost spikes at low rpm. I was wondering if that was a bad thing. I'm trying to think mechanically if this was bad/good due to the obvious overspool issue with k03's. At that low of an rpm, would the k03 be spinning out of range, or would it be spinning within range but just more than average? Sorry if this sounds confusing, but I think you get my point. Anybody have any thoughts on this?

01-04-2006, 05:52 AM	#2
S4Poor@Curbside Member Account #: 98473 Join Date: Oct 2005 Posts: 4,199	I am comfortable with the idea that MTM works WITH Audi to better it's products. That.. being said. I have a feeling that MTM & Audi try to keep all aspects of the programming to NOT put the K03's past their efficiency range. Just a guess, but it makes sense to me. Why would Audi want a company that they work with make a product that would ultimately make Audi pay for replacements for people still under warrantee? Just my $.02. Start the flaming...

01-04-2006, 06:22 AM	#3
Captain Matt, I be Elder Member Account #: 26545 Join Date: Oct 2001 Posts: 32,092	ask S4mig what he thinks of how MTM software treats K03s :) __________________ Support Innovation for the B5 Platform - www.autospeedperformance.com www.vastperformance.com B5 S4 Forum Cliff's Notes B5 S4 RNS-E Nav+ Installation

01-04-2006, 06:35 AM	#4
S4Poor@Curbside Member Account #: 98473 Join Date: Oct 2005 Posts: 4,199	He loves it :-)

01-04-2006, 07:45 AM	#5
'Nova more S4 Member Account #: 47523 Join Date: Dec 2002 Posts: 7,181	if you want to run some logs, we can meet up to see if it does spike. __________________ http://www.acna-nj.org

01-04-2006, 08:13 AM	#6
STTPower New Member Account #: 92267 Join Date: May 2005 Posts: 98	Nova S4 2k1....Are you running the MTM software?

01-04-2006, 08:29 AM	#7
OSin456 AudiWorld Senior Member Account #: 42092 Join Date: Aug 2002 Posts: 1,086	Just makes boost sooner, it doesn't really "spike". When i had the chip it would hit 1-bar at 2.2k as compared to maybe 1-bar at approx 3k for other chips. Held 1.1-1.2 and then tapered to 1-bar a little before, or @ 5k, and then held a bit above .9 until 6k and then slighlty below afer 6.5k. The early boost build-up would not bother me mechanically (as long as it's not "spiking" more than it should, 1.2 bar). Holding boost at higher RPM's would. __________________ ASP Stage 3 Avant <a href="http://www.wunderground.com/US/CA/Hermosa_Beach.html?bannertypeclick=big2"> </a>

01-04-2006, 08:49 AM	#8
SchagenWagen Junior Member Account #: 44371 Join Date: Oct 2002 Posts: 1,361	At engine low RPM, K03 should not be even close to spinning out of range Now, in midrange, things could be close. How far the limits set?. You need to examine compressor map and calculate engine consumption for air based on RPMs and boost pressure you see. In general, I don't see anything mechanicaly wrong with quicker spoolup

01-04-2006, 08:53 AM	#9
MNblackS4 Member Account #: 33171 Join Date: Feb 2002 Posts: 1,064	I'm hoping to start some homebrew tweaks with my MTM stage 2 software I put in K04s over Thanksgiving. I've been driving around with throttle cut for the last 5 or 6 weeks. I'll be using an MBC, TCD, and '5 bar' FPR from Vast and tweaking with Lemmiwinks. Hopefully we get good results. I'll post something when we get started and make some progress. __________________ EPL Stage 3 create your own visited states map

01-04-2006, 09:35 AM	#10
STTPower New Member Account #: 92267 Join Date: May 2005 Posts: 98	Another quick thought of mine..... I'm assuming 1.1 bar with mtm is only at WOT correct? So correct me if i'm wrong, but would half-throttle create around .5 bar? Has anyone ever tried this or calculated it before. If I can recall, the max boost for stock is around .6 or something. So driving half-throttle would never drive the turbo out of range. Am I right? Sorry if I'm just talking out of my ass, but i've been thinking about that for a while. Any feedback?

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