I mounted my Aquamist nozzle at the end of my stock UIP. It works great! See the attachment pic below. I don't advise that you place the nozzle before the diverter valve tube or the water mixture will be recirculated back into the turbo. I found that out when I had my BOV vented to the atmosphere on my Talon. When you let off the gas after a full throttle run, water was all over the engine. I E-Mailed Richard at Aquamist a while back and he advised me the bend in the UIP will actually help the water mixing with the air due to the speed diiferential between the outside and the inside of the bend. A small swirl will be generated near that area.

 

great info! gracias!

 

I believe the point is not peak HP, but peak RPM. The engine may be inefficiently trying to pull and inefficiently using the air at that RPM (hence tapering torque/power), but volumetric flow is still the highest at that point.

 

hmm........

 

The torque curve more or less mirrors Ve. Peak flow occurs at peak hp, because hp is essentially a function of Ve (torque) with respect to rpm. Above the rpm at which peak hp occurs, Ve is dropping off faster than the rpm increases.

 

But let me toss in one little 'monkey wrench'...

What I said just above applies to a normally aspirated engine. With a turbo engine, the hp/tq curves alone may not tell the entire story with respect to Ve and flow. Why? Because a large turbo that spools late may not reach full boost until after the engine's Ve max, so the torque curve may not reflect the actual Ve.

Additionally, a smaller turbo may not reflect the actual point of peak flow in a hp graph because the turbo may run out of steam before point at which Ve begins to drop at a faster rate than the rpm increases. So, the actual air velocity as measured in the IC pipes (which is a product of air volume) may increase somewhat beyond the point at which the MAF begins registering a decrease in air mass (hp).

 

That is the simplified version that does not take into account FMEP. Think about a SEO restrictor plate engine. They can turn the engine higher, and because of increased draw frequency, airflow through the plate is increased but power either stays the same or drops because it is being consumed as friction.

 

The system is always considered as a whole.. the NA peak charging efficiency point of a TC engine does not need to be found in isolation because the TC engine will never be run NA.

This is true.

 

It's intended to be.

Maybe, but the efficiency characteristics of the N/A mechanical assembly is important because it allows us to make appropriate decisions with regard to cams, cam timing, etc.

 

Like you said, in a TC application the torque peak is a function of valve timing and and boost characteristics. You needn't find the NA torque peak to make decisions on cams or cam timing. If this wasn't the case, then the NA peak torque, or an entire NA torque curve would have been plotted by many people. Do you know where the NA torque peak lies on a stock E8 engine? What does the NA torque curve look like?
Apologies for how short these posts are and for perhaps not being warm or polite.. it's not that I feel that way, it's just I haven't slept for a long time this weekend. I just now realized the tone might be off, after re-reading posts and noting the progression.

 

So far, the shurflo pump, accumulator, the aquamist FiA2/HSV and parts is adding up to $476.82. Its not too bad for having a hybrid system that u know exactly how much water to fuel is injected.

 

At least you haven't just lost your home and 90% of your personal possessions to massive flooding. Rest assured I have reason to be in REAL bad mood. Get some sleep!

 

Oh yes, what a tragedy. Aaron Broussard's public plea was heart wrenching. Everyone please watch the video link off http://www.overspun.com/?p=1549 as well as read what the people have to say below in the comments. Makes me so sad and angry.

Hope your loved ones are ok Ted. I can't imagine what it is like to be working in one of those insurance companies right now. They're probably going to be backed up for years.