carlrx7

I've searched but had no luck, hoping someone can explain..

1) Is Nitrous used different when applying it to a DI engine?

2) Is it sprayed into the manifold like before with a plate or nozzle?

3) Can we still run a dry setup?

4) Is a Nitrous backfire still possible with a wet kit on an DI engine?

5) I thought the main purpose of DI was to be able to inject ALL the fuel at the last second to avoid a pre-ignition event, but if the Nitrous gets into the cylinder first, can pre-ignition now occur?

Thanks!

-Carl

Shurshot

By itself N2O is not flammable

http://answers.yahoo.com/question/in...7010529AAhpQgT

carlrx7

Thanks Mr.GOOGLE, most people know that. What question were you trying to answer?

VIN666

One question I would like to ad, is where you get the fuel for a wet kit from?

carlrx7

Hmmm. Good question. I would think it would need to be before the high pressure pump, but where to tap would be nice to know.

walhan_qtr

I asked couple times (on both threads that had those C7s with nitrous) and no one shared any pictures or info. I asked Nitrous outlet and they said they are running a stand alone in the back hatch to get their fuel.

I am interested to know about the other questions though...

Shurshot

Because you asked this


..........

VIN666

I assume he was talking about a wet shot...

Frans96ss

No standalone is needed. Its just like nitrous on any other car. Ours is working great

arghx7

If anyone's done it, and I'm sure at least somebody somewhere has attempted it on some engine, it's not been widely publicized. From the perspective of maxing out the fuel system, I don't think it would be any different than installing an aftermarket blower or turbo system. The fuel pumps (low and high pressure) need to be able to maintain enough fuel pressure. The injector needs to be able to fire long enough, with all the timing considerations involved.

I think where things would get risky is the same place it always does with a dry shot--figuring out how to tell the injectors to deliver more fuel when the engine sensors can't easily detect the additional air.

I would say yes. If fuel is pooling in the intake tract, and the conditions exist to ignite it, yes. Whether that's any worse on a DI pushrod engine with very simple cam phasing system is anybody's guess, but I'd say it's no more likely than it ever was on any Gen III or Gen IV engines.

Normally two injections, with one injection occurring in the compression stroke at low speed high load, can be used for knock relief at low speeds (up to around 2000rpm). Nobody here has reported observing two injection events at high load in a Gen V LT1.

One of the advantages of direct injection from a performance perspective is the cooling effect of spraying right into the cylinder. Since a wet shot introduces very cold air along with the fuel, you're not really losing that benefit by introducing through the mixture to the intake port.

walhan_qtr

where do you get your extra fuel for the plate? this is not just like other car I would assume being a direct injection and the mechanical pump...?? where would you run your line to the plate? pictures of your setup would be nice Thanks

VIN666

I take it there is a conventional low pressure pump in the tank, sending fuel to the high pressure pump, therefore one can tap the fuel pre-high pressure.
My assumption.

walhan_qtr

I am thinking the same way but I don't really know.