The Route to Power by Lorcan

Many 750 turbo owners, along with owners of pretty much any other bike, find themselves thinking "a bit more power would be nice". This guide is intended to give a snapshot view of the modifications necessary to increase your bike's power for street and race use. More details and advice are available in the forum.  You can also search the forum for more help. The parts lists for each stage are in addition to the earlier stages. There are, of course, many ways to skin a cat and the lists shown are by no means the only way to achieve these power levels, but they are the most popular methods followed by forum members. All power figures quoted are at the rear wheel. See the New Parts section of the forum for ideas on where to buy parts.

But first, a health warning.

HEALTH WARNING The following is ONLY A GUIDE. You, and only you, are responsible for the consequences of modifying your bike, some of which can be serious. If in doubt, consult a professional. All modifications should be notified to your insurance company.

Ok, let's get started. I think it almost goes without saying that you should start with a healthy engine. If it's blowing smoke, has low compression or rattles consult the forum for advice before going any further.

Stage 1 - Race mode, 100-115hp

The stock bike is restricted to around 95hp (at the wheel) by Kawasaki. We know this because there is a document from Kawasaki showing how to de-restrict it. Kawasaki call this de-restriction race mode. Click here for how to enable race mode.

Stage 1 parts list
Essential K&N air filter #R-1080, Silencer removal/replacement/modification for reduced back pressure.	Desirable Resistors as per the race mode document, boost gauge.

Stage 2 - Race mode with boost control, 100-135hp

The next step is to start turning the boost up. You need to be careful at this point as it is possible you will encounter detonation if you go too far. Detonation is an uncontrolled burn in the cylinders and MUST be avoided at all costs, or you will have a molten lump of scrap for an engine. You can hear detonation - roll the bike on in 2nd or 3rd gear, wide open throttle, it sounds like a rattle "the death rattle". Also check the plugs to see if they have come loose and for specks of metal on the electrodes - both are signs of detonation. If you suspect detonation is occurring, turn the boost down. Stock boost is 7-10psi, 12psi gives a noticeable increase in power with 15psi being the limit we would recommend on pump fuel. 15psi should get you to around 135hp, approx 40% more power than stock. This is the limit of the stock turbocharger. A dyno run is recommended to check the fuelling throughout the rpm range. Make adjustments to the TPS/resistors as per the race mode document.

Stage 2 parts list
Essential Boost controller, boost gauge.	Desirable Dyno run to check fuelling. Dump valve. Oil pan mod.