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In what way you are asking for, there is no need to change upto 100,000 km according to owners manual.
im into ill racing so i neeed perfomance plugs
On time tunning and cleaning plus clean air filter boost engine performance.
Using "racing" spark plugs
Be cautious! In reality, most "racing" spark plugs are just colder heat ranges of the street versions of the spark plug. They don't provide any more voltage to the spark plug tip! Their internal construction is no different than most standard spark plugs.
There are some exceptions, though. Extremely high compression cars or those running exotic fuels will have different spark plug requirements and hence FAIRSALE AUTOS deals in spark plugs that are well-suited for these requirements. They are classified as "specialized spark plugs for racing applications". Some are built with precious metal alloy tips for greater durability and the ability to fire in denser or leaner air/fuel mixtures.
However, installing the same spark plugs Kenny Bernstein uses in his 300+ mph Top Fuel car (running Nitromethane at a 2:1 air/fuel ratio and over 20:1 dynamic compression) in your basically stock Honda Civic (running 15:1 a/f ratios with roughly 9.5:1 compression) will do nothing for you! In fact, since Kenny's plugs are fully 4 heat ranges colder, they'd foul out in your Honda in just a few minutes.
FAIRSALE AUTOS as a fair and ethical parts supplier tries to stay clear of saying that a racing spark plug (or ANY spark plug) will give you large gains in horsepower. While certain spark plugs are better suited to certain applications (and we're happy to counsel you in the right direction) we try to tell people that are looking to "screw in" some cheap horsepower that, in most cases, spark plugs are not the answer.
To be blunt, when experienced tuners build race motors, they select their spark plugs for different reasons: to remove heat more efficiently, provide sufficient spark to completely light all the air/fuel mixture, to survive the added stresses placed upon a high performance engine's spark plugs, and to achieve optimum piston-to-plug clearance.
Some of these "specialized racing plugs" are made with precious metal alloy center/ground electrodes or fine wire tips or retracted-nose insulators. Again, these features do not necessarily mean that the spark plug will allow the engine to make more power, but these features are what allow the spark plug to survive in these tortuous conditions. Most racers know screwing in a new set of spark plugs will not magically "unlock" hidden horsepower.
Using high power ignition systems
Many of the more popular aftermarket ignition systems are of the capacitive discharge type. They store voltage, or accumulate it, until a point at which a trigger signal allows release of this more powerful spark. Companies like Mallory, MSD, Crane and Accel, to name a few, offer such systems.
They affect spark plugs in that they allow the gaps to be opened up to take advantage of the increased capacity. The theory is that the larger and the more intense the spark you are able to present to the air/fuel mixture, the more likely you will be to burn more fuel, and hence the more power you will make.
We encourage the use of such systems, but only on modified or older non-computer controlled vehicles.
In reality, computer controlled vehicles do such a good job of lighting off the air/fuel mixture (as evidenced by the ultra-low emissions), added ignition capacity would do little to burn more fuel since the stock configuration is doing such a good job. Older non-computer controlled vehicles or those that have been modified with higher compression or boosted (nitrous, turbo, supercharged) engines can certainly take advantage of a more powerful ignition system.
Irridium NGK plugs should give your performance a bit of boost.
^^^^ sir 1hp i think. u wont feel the difference but your car will perform well.
Chawla Group of Industries
i know dear you can gain 2hp round about
The coldness of plugs depends on there heat range not on the type of tip
As far as my info City09 is already equipped wth NGK Laser Iridium IZFR6K11
so there can be two substitutes Either NGk iridium BKR6EIX or DENSO IRIDIUMS IK20
DIY The Best Workshop on the Holy Planet!
Every thing changes,Its only the "change" which never changes.
Heat range is the main thing...If u already got NGK Iridium i dont think so u hav ny need for replacement if they r not then gor for the options Wasay has given u.
Flavor of Life on a 2 Wheeler - Project |Suzuki GS 500e|
@dani bro city is already having irridiums u dont need to change them though if u change the plugs to any of the options wasay bhai has given u wont be getting a very noticeable change alone with the plugs until n unless u go with na stup.ur plugs are fine no need of chaniging them cz 2hp gain is not very much noticeable.
thx for guding friends