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Twingo Discussions by Generation
Twingo Renaultsport 133
pops and bangs
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<blockquote data-quote="oscar" data-source="post: 161399" data-attributes="member: 2757"><p>on standard ECU you can only advance the ignition timing by so much, the ECU controls it and you don't have much leverage over how much to increase or reduce by. usually 6 degrees +/- . the baffles won't help it much, you need a true straight through system with no baffles. the baffles won't affect that too much, but if you wanted the occasional flame or anything (should that be your thing) you won't ever see one without a true straight through system (backbox with no baffles, no cat and no silencers). you'll require a the fuelling to be spot on too. too lean a mixture and it'll still be burning combusting as it comes out the cylinder, too rich and the combustion will be over before of gets to the manifold preventing bangs. the trick is on the over run, usually you will cut the spark which is where your omex will come in thomas. what it does, is cuts the spark plug from firing for one power stroke. so that out the exhaust, gets pushed fuel and air unburnt and as it hits the cherry hot manifold it will ignite and go BANG! some ECU's you can programme this in, but not sure on the factory renault ECU's mate.</p></blockquote><p></p>
[QUOTE="oscar, post: 161399, member: 2757"] on standard ECU you can only advance the ignition timing by so much, the ECU controls it and you don't have much leverage over how much to increase or reduce by. usually 6 degrees +/- . the baffles won't help it much, you need a true straight through system with no baffles. the baffles won't affect that too much, but if you wanted the occasional flame or anything (should that be your thing) you won't ever see one without a true straight through system (backbox with no baffles, no cat and no silencers). you'll require a the fuelling to be spot on too. too lean a mixture and it'll still be burning combusting as it comes out the cylinder, too rich and the combustion will be over before of gets to the manifold preventing bangs. the trick is on the over run, usually you will cut the spark which is where your omex will come in thomas. what it does, is cuts the spark plug from firing for one power stroke. so that out the exhaust, gets pushed fuel and air unburnt and as it hits the cherry hot manifold it will ignite and go BANG! some ECU's you can programme this in, but not sure on the factory renault ECU's mate. [/QUOTE]
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Twingo Discussions by Generation
Twingo Renaultsport 133
pops and bangs
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