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07-04-2004, 08:57 AM | #1 |
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Chipping
2002 S4.
Who's had open pipes on and not chipped? I've got open pipes and DP air filter on their way and have been told that I shouldn't put a chip in (as I did with my 748) - the ECU can just be quickly reprogrammed. Anyone done this? or can anyone recommend a chip for standard open pipes and filter? Cheers in advance . . . |
07-04-2004, 11:20 AM | #2 |
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Hi there.
Your S4 technically will need the Ducati Performance ECU which has the correct fuel & ignition map for the new set-up. I know of a few people who have changed the exhaust/airbox but haven't changed the ECU and all reckon it runs okay, but not brillant at the bottom end. The ECU can be 'trimmed' to richen-up the mixture, but you'll need to have it plugged into the diognostics computer to do this. Cheers. Lee. |
07-04-2004, 11:25 AM | #3 |
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Cheers for your answer, Lee. Much appreciated. I'll see how I go with just the pipe and airfilter when it arrives, then make a decision.
I thought I'd have to re-chip, but then was thrown when I was told about the re-trimming. . . The thing is, the cans are road legal with removable baffles. I'm gonna be tossing a coin as to whether I get the mixture changed - guess I'll have to see how long I keep the baffles in :twisted: |
07-04-2004, 12:41 PM | #4 | |
1/2 man - 1/2 pogo-stick
Join Date: Aug 2002
Location: Dartford, Kent
Bike: M900ie
Posts: 7,241
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Lee wrote...
Quote:
Unfortunately I had left my Acme Bull****-o-meter at home so was unable to check if he was talking out of his arse Gotta admit the bike does run better since it was tweaked - so whatever he did made a difference :burnout:
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GT Fully paid up member of the S.A.S. (Scottoiler Appreciation Society) 27,000 miles on original chain - and still going strong! |
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07-04-2004, 01:23 PM | #5 |
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Richer or leaner??
Well, you plug the gas analyser up the chuff and see which way to go Cheers. Lee. |
08-04-2004, 09:38 AM | #6 |
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Air cooled. 1998 M750. If I've got non-standard cans, do I need any 'mods' ?????
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08-04-2004, 06:45 PM | #7 |
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Just had a look under the tank and can see now why I've been told about the re-trimming of the standard ECU chip.
Unlike the 748/916 where you just swop out the EPROM chip, the Monster one is a sealed unit. This would make it expensive to replicate (with the simple EPROM chip you just "blow" another map onto a blank chip and plug it in). Also I don't know whether you can get the DP chip separate from the Termignoni exhausts - the DP catalog on Ducati's site doesn't list it separately. Steviej - It all depends. Your monster is a carb model so to make any changes to fuelling you would be looking at a Dynojet kit . Whether you need to change the fuelling or not depends on what you are planning to install. You say you've got non-standard cans. These should work fine with the standard jetting setup without damaging the valves because you've not changed the intake mixture. If you also have a free-flowing airfilter, such as the K&N or Ducati Performance ones you should definitely be looking to re-jet your bike. In this case, without re-jetting, the engine will more than likely be running too lean. This will cause the valve seats to run too hot and start breaking down. A leaner running engine doesn't have enough fuel in the mixture to keep the combustion chamber cool (i.e. the free-flowing air filter is letting too much oxygen in). The majority of the "burn" will be oxygen, which burns hotter than an optimal mix of oxygen and petrol. By installing a Dynojet kit (or any other larger main jets) you will be re-adjusting the fuel/oxygen mix back to optimal. Some would argue that by changing just the pipes changes the back pressure at the exhaust valves and runs them too hot, but I don't believe it's enough to damage them. |
08-04-2004, 07:38 PM | #8 |
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Cheers ar' kid...................................
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