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Posted by moto
- July 18, 2017, 10:40:46 AMQuote from: Troll on July 18, 2017, 08:22:51 AMWow! Now i know more better these science, thanks!In a word, no, it will not change fuel delivery to compensate for changes. The fuel delivery system, and ignition timing are pre-mapped, and cannot be changed. The only thing you can do is add a fuel "tuner" that will make the engine run richer mixtures under certain circumstances. To be able to adjust itself, the system would require at least a 32 bit computer and a lambda sensor in addition to what it already has. Do not worry about valve and or fuel problems with your change to an open exhaust. The systems are preprogrammed rich enough that it won't make any difference. I'm running a fairly open Cobra exhaust and my own design free flowing air intake system. I have plenty of power and at 113,000 miles (182,000 Km) I have had ZERO problems. I went from an average of 39 mpg to 45 mpg, and sometimes as much as 52 mpg with my modifications. Here's an example fuel map and the cell structure of the programming. As you can see, nothing under 3,000 rpm is accessible, which is where 99% of your riding is done.
BTW, where is this computer and lambda sensor in bike?
Posted by Troll
- July 18, 2017, 08:22:51 AMIn a word, no, it will not change fuel delivery to compensate for changes. The fuel delivery system, and ignition timing are pre-mapped, and cannot be changed. The only thing you can do is add a fuel "tuner" that will make the engine run richer mixtures under certain circumstances. To be able to adjust itself, the system would require at least a 32 bit computer and a lambda sensor in addition to what it already has. Do not worry about valve and or fuel problems with your change to an open exhaust. The systems are preprogrammed rich enough that it won't make any difference. I'm running a fairly open Cobra exhaust and my own design free flowing air intake system. I have plenty of power and at 113,000 miles (182,000 Km) I have had ZERO problems. I went from an average of 39 mpg to 45 mpg, and sometimes as much as 52 mpg with my modifications. Here's an example fuel map and the cell structure of the programming. As you can see, nothing under 3,000 rpm is accessible, which is where 99% of your riding is done.
Posted by moto
- July 18, 2017, 01:43:43 AMQuote from: AZCaveman on July 17, 2017, 15:03:18 PMNo, the stock computer will add more fuel as needed.
Hmm.. is that's true? Because V&H sell Powercommader kits also Drifter.
Do you have technigal specification or proof to show me of that Drifter automatic fuel feeding?
Posted by AZCaveman
- July 17, 2017, 15:03:18 PMNo, the stock computer will add more fuel as needed.
Posted by moto
- July 16, 2017, 23:10:25 PMQuote from: AZCaveman on July 16, 2017, 12:06:11 PMOk, thanks, but what about valves, can I burn my valves if I put V&H without adjusting mixtures?If no other changes..Intake etc. Then no, your stock computer will adapt just fine.
QUIET? Yes fairly quiet, yet louder than stock as the goat bladder actually does a significant amount of quieting. and removal with raise sound.
Posted by AZCaveman
- July 16, 2017, 12:06:11 PMIf no other changes..Intake etc. Then no, your stock computer will adapt just fine.
QUIET? Yes fairly quiet, yet louder than stock as the goat bladder actually does a significant amount of quieting. and removal with raise sound.
Posted by moto
- July 14, 2017, 10:51:19 AMIf I change my Drifter exhaust to V&H Longshots with Quiet baffles;
- do I must to buy Powercommander ?
- do I must to adjust fuel mixture ?
- are these pipes very loud with Quiet baffless installed
thanks