Redline increase?

Bike aesthetic/mechanical/electrical modifications and general wrenching advice.
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BoostedOne
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Re: Redline increase?

Post by BoostedOne » Sun Mar 25, 2018 4:45 am


If you just want more boost, why not simply change the impeller to the H2 version, assuming the airbox can handle it? Unless they've done something to not allow an H2 impeller to mate with the H2SX impeller shaft.
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JonTheChron
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Re: Redline increase?

Post by JonTheChron » Sun Mar 25, 2018 5:30 am


That would be a costly mod as the super charger alone is priced at over 3500$ USD. And the super charger is a non-serviceable unit so parts (like the impeller for instance) aren't available separately.
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2018 H2 SX SE (1st in Canada)
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cOoTeR
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Re: Redline increase?

Post by cOoTeR » Sun Mar 25, 2018 11:38 am


BoostedOne wrote:
Sun Mar 25, 2018 4:45 am
If you just want more boost, why not simply change the impeller to the H2 version, assuming the airbox can handle it? Unless they've done something to not allow an H2 impeller to mate with the H2SX impeller shaft.
The 2 proven ways to get more boost and power on the regular H2 are a redline bump and replacing the gears that drive the supercharger.

Redline bump is the most cost effective because it's basically done with a tune and flash. On a newer model bike it's risky but on the regular H2 and other Kawasaki's redline bumps have been used for awhile without any issues. The redline bump only adds to peak power which is not necessarily a bad thing on a super powerful bike.

The supercharger gear change costs more in parts and requires a re tune. It adds more boost across the rev range meaning more power everywhere. With more power at the low and midrange it can make the bike more difficult to ride because the amount of power makes it easier to accidently lift the front wheel with less throttle. So coming out of corners the bike can become less stable. Especially lower gear corners. With the supercharger gears you may have to upgrade the blow off valve if the boost is too high. Otherwise it's a wasted effort.

I'm interested in the redline bump mainly because 1 it's easy to do and 2 it only affects rideabilty at full throttle.
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Stock with airfilter 164whp 84ft.lbs
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vcyclenut
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Re: Redline increase?

Post by vcyclenut » Sun Mar 25, 2018 1:17 pm


You are correct cooter but this is where someone like myself comes in with a well developed flash for the mod

I can limit the aggressiveness of the throttle and even the amount of total throttle you get In the lower gears to make the extra boost usable.

This is when the mode switch actually becomes a tool

Allowing you to change between aggressiveness of the throttle but all make full power when turned to the stop or in this case maybe the least aggressive mode has throttle limits in first and second.
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