Are stock FX's getting to the wheels exactly? I'am curious because I wanted something to get my FX to the 300 hp mark.I know it wont be 300 to the wheels but, I feel weird being at 280, lol might as well make it 300. What upgrade would you guys reccomend? And will it void the warranty? Thanks again guys!
Stock will give you about 220 at the wheel. Depending on the Dyno they use, with FI, as psicln stated, 300+ is achievable.
The warranty is technically voided on any engine that has been modified, but technically the rest of the (bumper to bumper) warranty should still be OK. I asked my dealer and they said that as long as the problems are not related to what we change, it's covered. But they are the ones deciding on what the cause of the problem is.:err:
As far as FI goes, there are different levels. Stillen Stage 2 comes with an intercooler and has an optional Engine warranty. The Boost level is about 6psi. The next level is Stage 3 and it gives you about 7psi. Finally there is Stage 4 with about 7.5 psi.
The problem with Stillen stage 3 and 4 is the 7th injector. The 7th injector is placed in the Intake manifold and fires fuel mixed in with air into the engine to compensate for the "lean" mixture so there is not too much AIR and too little fuel. This will cause the Engine to overheat and the Cylinder heads to collapse. However, when the engine is rev'd up the amount of AIR that's taken in by each cylinder is considerably higher than normal, therefore the Fuel injected by the 7th injector will be consumed by the rear 4 cylinders and very little is left for the Cylinder 1 and 2. This increases the chance of the engine blowing. Also, since the 7th injector is controlled by a separate ECU, if the ECU dies, the engine is toast.
Turbo and Twin turbo are better, quieter, and more powerful. It is considerable more costly since more equipment is needed to compensate for the air/fuel ratio. You'll need to replace all injectors, and the fuel pump, so less likely to fry the engine due to lean power.
The VQ engine is not designed to handle a lot of power and RPM, so the larger the turbos, you'll need to replace more engine parts to make it "safer".
I believe the 300+ is typically for Stillen Stage 4 and 400+ has been achieved by Twin Turbo.
Remember that there are a lot of things that need to happen for the Wheels to turn. In order to get them to spin faster, you need to change a lot of other things than just "FI".
