SDS VS MS, I would like to figure this one out?????? |
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SDS VS MS, I would like to figure this one out?????? |
toon1 |
Mar 16 2008, 01:11 PM
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#1
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Senior Member Group: Members Posts: 1,849 Joined: 29-October 05 From: tracy,ca Member No.: 5,022 |
DISCLAIMER: This is not a thread to argue bash or to say yours is better than mine.
I would like to learn what the difference is! I am an MS user and happy with it, if SDS will fuel an engine better, I would like to find out why! I have been following Daves thread about MS not fueling his engine well enough. There are dyno results proving this, can they be posted with the reasons why MS fails to provide an engine with what it needs? I have been to SDS's site and cannot find any reason why it would fuel an engine better. Is it the simplicity of setup? Is it that SDS has 16x16 fuel tables? Is SDS's processor faster? I'm sure if MS was capable of doing the same as SDS, Jake would have figured it out. I would like to learn differences! AGAIN, no bashing, just learning. Keith |
toon1 |
Mar 22 2008, 10:14 PM
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#2
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Senior Member Group: Members Posts: 1,849 Joined: 29-October 05 From: tracy,ca Member No.: 5,022 |
Yes, but earlier versions of the SDS (pre V16.6) operating in closed loop would pull the engine to stoich instead of a richer enrichment needed by our engines. I have two of the prototype chips installed in my 912E and the Pinzgauer, no others are being used in cars, only steady state aircraft engines.. The new set up is driven by an AEM, PLX or similar wide band arrangement and continually will adjust enrichment as much as 25% from any previous value to reach the target AFR that was programmed into the chip by SDS. In my experience I always make the most power @13:1 and net the best temps, so I had my 16.6 chips burned at that value. With the SDS in closed loop the chip will work to auto correct the AFR to the preset value when the MP and RPM are within the ranges set by the user to actuate closed loop. I have my 912E set to always run in closed loop from heavy acceleration to just after the decel MP. On the dyno with the Pinz engine we were able to activate the system and get the same AFR and power even when we purposely jumbled up the fuel values as much as 25%.... It does work. So what this means is the system just got a bit smarter and the chip will accommodate for up to a 25% inaccuracy in fuel mapping for the user. SDS is always making their system better. When I first started using SDS 5 years ago they were on V12, I just received a V17 system to test on a 914 customers engine and the refinements they make are remarkable. Do you run 13.1 across the board? Why is it that these engines don't like less than 13.5:1? |
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