I am scheduled for NOS on 7-15-02 direct port 140 shot on a GS400. There are not any applications approved for the Lexus GS so find a good shop. I am using a shop in Pomona CA where NOS is based out of. I will tell you how it turns out on CL. You can e-mail me direct after I get it in. Direct port is the most expensive yet it controls the fuel/NOS at the same time without depending upon your mass air flow to calculate it or running a fogger through the manifold where you can have a back fire. As far as NOS rusting your engine parts????????????? Nos is shot as a gas not liquid, and is very combustable and burns very hot. ie. no rust. Bad gasket???? LOL????? Maybe.

 

Are u upgrading the Fuel pump as well or is the stock fuel pump sufficient.

 

I will see when it gets dyno'd if all is ok with the stock pump.

 

there is no way your stock fuel pump can handle a 140shot of NOS, let alone 100. NOS = cancer for the car.