[hotrod]

The only thing you missed was how much boost that pulley will give you, and if the supercharger is intercooled in any way.

As a generic statement, your configuration should benefit from WI, especially if your local pump premium gasoline is not quite up to the task for the boost your running.

Your plug gap strikes me as being a bit wide unless the GTP comes with a very good high output ignition, many cars running superchargers or turbocharges need to run narrower gaps than that to get reliable ignition. There is however a very good case to run the widest gap your ignition system will reliably fire the mixture at high rpm. WI might force you to close that down a bit.

The install of WI is generally pretty straight forward. It is mostly a plumbing job. You need to find a location on your intake system where you can place the nozzles ahead of the throttle body ( unless you want to mess with direct port injection ) It is in many ways similar to a nitrous setup.

On positive displacement superchargers you can gain more air flow by injecting ahead of the supercharger to pre-cool the intake charge before it goes through the supercharger. If you inject post supercharger you maximum air flow is limited by the superchargers rpm ( overdrive ratio) and the CFM / rev of the supercharger. No matter how much you cool the charge after the supercharger you will only get that max flow determined by the fact the supercharger is a positive displacement pump.

If you cool the air charge ahead of the supercharger you can make the supercharger act like it is a slightly larger CFM/rev design and actually increase your max air flow without changing the pulley.

If you are not intercooled WI will definitely help your setup as it will significantly increase the engines VE due to the cooling of the manifold air charge before it passes the intake valves. This not only will reduce your chance of detonation but will improve the engines ability to breath as the intake air charge will be cooler and denser.


Give us a bit more info on your boost, intercooling and what issues you have with fuel octane/detonation and perhaps we can help point you at some other considerations for you to look at.

Take a look around the site there are lots of useful info from other installs that should give you some ideas.

Larry