How much can I spray it?
If you want to go any higher (which you can with the forged internals) you need a direct port. This will eliminate any distriution issues at higher hp levels.
Provided you can tune you can go 200>250 IMO.
The fear of big shots is that poeple tend to play it safe and jet too much fuel which can puddle in the intake and have an intake backfire.
For that reason DP is much better or In my case dry shooting as injectors add the fuel, no puddling.
that is another issue besides leaning the back cylinders.
But like I said 300 is too big for non DP and potential intake backfire is high.
IMO 200 is MAX, bigger>>>>>>>>DP
The backfiring shouldn't be an issue unless you spray at to low of an RPM, or you have a weak intake valvespring (valvefloat). It's the vaporized fuel in the intake being ignited by the combustion that causes the explosion in the intake, not puddling (if it even happens).
I would be more concerned about leaning out a cylinder to much due to the flow characteristics of the intake. JMO.
The backfiring shouldn't be an issue unless you spray at to low of an RPM, or you have a weak intake valvespring (valvefloat). It's the vaporized fuel in the intake being ignited by the combustion that causes the explosion in the intake, not puddling (if it even happens).
I would be more concerned about leaning out a cylinder to much due to the flow characteristics of the intake. JMO.
If it ever happens??? Of course it happens!! Did it ever click in your mind why they call it an air intake and not a fuel air intake?
Check the inside of your intake and see how smooth it is
Yes leaning the back cylinders is an issue, and so is low rpm nitrous shooting, valve float and intake PUDDLING.
Read carefully again, you'll see that I mentionned that it is preferable, ie better, ie recommended to go DP for big shots for various reasons, ONE of them being intake backfires and puddling (which are related)
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I'm not trying to argue for the sake of arguing here, but I just don't buy into the puddle theory.
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Intake is not perfectly straight or smooth, it has variations, pits, etc...
An over saturation of fuel "can " cause some of it to deposit in the low areas (especially in the lower pressure areas), and that is what we call "puddling".
Now that is NOT, the only factor that causes a backfire but ONE of them. As the wet shot increases so does the potential.

That is one of the reasons I chose AFR's. But I'll only shoot a "small" 200 dry.



