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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#41
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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 |
Mark Henry |
Mar 18 2008, 01:00 PM
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#42
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that's what I do! Group: Members Posts: 20,065 Joined: 27-December 02 From: Port Hope, Ontario Member No.: 26 Region Association: Canada |
Are you, Mark and Jake, confident enough to break a motor in using SDS only? I ask because otherwise I would need carbs for three different combos as I get to each one, and that does not make sense. This is purely for bench level break in (cam break in etc) Once the motor is in the car, I can tune it from that point forward. Is there enough canned a/f maps out there to get a decent baseline that wont flood the pistons? Rich Absolutely no problem as long as I have a wideband and a CHT. The baseline map from SDS will be right in the ballpark and with a WB if you can see if your A/F is OK and you're good to go. BUT, there's a "but" on crankfire. If you're using crankfire it is a bit trickier, as you must set your initial timing with a strobe at around idle. You can't set it static like you would a stock dizzy. On the crankfire you do change the timing through programming, BUT the first time you must use a strobe and "tell" the system (one time only) where the timing is (i.e. 10 degrees BTDC). If you're fast and get it up to break-in RPM ASAP you should be OK. Jake most likely (I'm guessing) gets around this using a known crankfire mount set up, or he has a non-crankfire SDS unit and uses a dizzy and set initial timing. In other words if you use the same known system, disc and sensor/mount and nothing changes when you swap it out, you shouldn't have to set the initial timing. On a dyno this is no problem, but it would be a real PITA to do on an installed engine. Unfortunately if you have a crankfire SDS it won't work with a dizzy, as a non-crankfire SDS needs a tach signal. The CF tach signal comes off of the coilpack so there is no work around. |
r_towle |
Mar 18 2008, 02:26 PM
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#43
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Custom Member Group: Members Posts: 24,585 Joined: 9-January 03 From: Taxachusetts Member No.: 124 Region Association: North East States |
Are you, Mark and Jake, confident enough to break a motor in using SDS only? I ask because otherwise I would need carbs for three different combos as I get to each one, and that does not make sense. This is purely for bench level break in (cam break in etc) Once the motor is in the car, I can tune it from that point forward. Is there enough canned a/f maps out there to get a decent baseline that wont flood the pistons? Rich Absolutely no problem as long as I have a wideband and a CHT. The baseline map from SDS will be right in the ballpark and with a WB if you can see if your A/F is OK and you're good to go. BUT, there's a "but" on crankfire. If you're using crankfire it is a bit trickier, as you must set your initial timing with a strobe at around idle. You can't set it static like you would a stock dizzy. On the crankfire you do change the timing through programming, BUT the first time you must use a strobe and "tell" the system (one time only) where the timing is (i.e. 10 degrees BTDC). If you're fast and get it up to break-in RPM ASAP you should be OK. Jake most likely (I'm guessing) gets around this using a known crankfire mount set up, or he has a non-crankfire SDS unit and uses a dizzy and set initial timing. In other words if you use the same known system, disc and sensor/mount and nothing changes when you swap it out, you shouldn't have to set the initial timing. On a dyno this is no problem, but it would be a real PITA to do on an installed engine. Unfortunately if you have a crankfire SDS it won't work with a dizzy, as a non-crankfire SDS needs a tach signal. The CF tach signal comes off of the coilpack so there is no work around. so for break in a stock dizzy should work?? Then go to Crank Fire prior to installing the engine?? That sounds more reasonable then having to setup carbs for break in and EFI for motor install./// Rich |
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