Innovate/Spritex/Bullet... What I found searching the web.

[wparsons]

Originally Posted by ft_sjo

PI is superior for making power over DI.

Superior in what sense? DI gives a much cooler intake charge and better fuel atomization. You can make more power with DI as long as the system can flow enough fuel.

The only thing "superior" about PI is the availability of bigger pumps and injectors.

[ft_sjo]

Originally Posted by wparsons

DI gives a better fuel atomization.

No it doesn't. Not at higher port velocities. For example, this is why (when allowed), F1 engines run a downstream injector for higher flow rates.

[buditjoenawan]

http://www.f1fanatic.co.uk/2013/01/2...-2014-numbers/

http://www.motorauthority.com/news/1...gn-regulations

http://www.goapr.com/includes/img/pr...e_ic_93_cw.png

Direct injection really has only one drawback, power or efficiency isn't one of them.

Budi

[EZWood]

Originally Posted by ft_sjo

PI is superior for making power over DI.

I thought this was a joke at first to go along with the other rediculous things everyone else was saying.

[Sellout]

Let's not forget why we have direct injection. The intention is to cut fuel usage. If it were not more efficient, we would not have it. Direct injection is superior for allowing the engine to run lean during CRUISE (not when you're at full throttle) so our newfangled DI system isn't going to help this engine defeat the laws of physics and allow it to make more power per unit volume of air.

Currently, DI isn't superior for making power, at best it's slightly behind PI for power production. Hopefully F1 can change that, cause it's definitely here to stay.

I wholeheartedly agree with Anaxilus: It's a good thing we have both. Port injection is GREAT for keeping crap from building up on intake valves.

[Anaxilus]

"Cadillac sells the CTS with both indirect and direct injection versions of its 3.6 liter V6 engine. The indirect engine produces 263 horsepower and 253 lb-ft of torque, while the direct version develops 304 hp and 274 lb-ft. Despite the additional power, EPA fuel economy estimates for the direct injection engine are 1 MPG higher in the city (18 MPG vs 17 MPG) and equal on the highway. Another advantage: Cadillac's direct injection engine runs on regular (87 octane) gasoline. Competing cars from Infiniti and Lexus, which use 300 hp V6 engines with indirect injection, require premium fuel."

[Sellout]

Originally Posted by Anaxilus

"Cadillac sells the CTS with both indirect and direct injection versions of its 3.6 liter V6 engine. The indirect engine produces 263 horsepower and 253 lb-ft of torque, while the direct version develops 304 hp and 274 lb-ft. Despite the additional power, EPA fuel economy estimates for the direct injection engine are 1 MPG higher in the city (18 MPG vs 17 MPG) and equal on the highway. Another advantage: Cadillac's direct injection engine runs on regular (87 octane) gasoline. Competing cars from Infiniti and Lexus, which use 300 hp V6 engines with indirect injection, require premium fuel."

I have no doubt that both of those engines are tuned to the absolute max capacity of their injection systems.

"Despite the additional power" As if the EPA estimates had anything to do with actually using said power. lol

[Anaxilus]

Exactly, so the PI version needs to run rich and fail smog to be competitive in that example. Time to find a Holley carburetor for my FA20. ;P

[Accurate Race Shop]

Originally Posted by Anaxilus

Exactly, so the PI version needs to run rich and fail smog to be competitive in that example. Time to find a Holley carburetor for my FA20. ;P

I just bought a Holley for my bronco lol it would be cool if they made a different throttle body for this car that is deffinitly a sticker I would allow on my car.

Sent from my Q10

[Sellout]

Originally Posted by Anaxilus

Exactly, so the PI version needs to run rich and fail smog to be competitive in that example. Time to find a Holley carburetor for my FA20. ;P

Oh I'm sorry, I didn't realize someone had made a 120hp/L DI engine with LEV status. Oh wait...

[Anaxilus]

Originally Posted by Sellout

Oh I'm sorry, I didn't realize someone had made a 120hp/L DI engine with LEV status. Oh wait...

Oh I see, you needed to completely switch engines to an S2000 to keep arguing my point about the Cadillac CTS. Cool, I'm glad your psychic powers know the S2000 wouldn't have been 130hp/L w/ LEV or ULEV using DI. Oh wait....

[Sellout]

Originally Posted by Anaxilus

And which boosted orange are you comparing to my naturally aspirated apple exactly?

Nevermind, apparently you got it. And apparently someone made a DI engine that makes more hp/L than the S2000. It was in the Ferrari 458 Italia. The GT3 RS 4.0 also... So apparently what I was getting at was wrong too.

[wparsons]

Originally Posted by ft_sjo

No it doesn't. Not at higher port velocities. For example, this is why (when allowed), F1 engines run a downstream injector for higher flow rates.

Uhhh, what does higher flow rates have to do with fuel atomization? I already said that the only downside to DI in terms of power is the difficulty in finding higher flow pumps and injectors.

[Splat]

Can you guys stop the bs posts. All these false alarms are, driving me nuts...lol
Supercharger sprintex or nothing.