Just like Andy says, the YSI is out of control and just what I like. -haha.

The t trim (sl1500) is a killer blower and does make great power!!!

 

Thanks! Looks like you start making 400+ ft-lbs at 3000 RPM, similar to other centri graphs I've seen.

I found this comparison graph of an E-Force on an otherwise 2010 Grand Sport (did not specify A6 or M6!). Looks



This looks pretty close to the Edelbrock graph of a 554 HP LS3 E-Force found on their website so it appears realistic. I'll take these two "real world" dyno graphs, with the understanding that there may be environmental, dyno, transmission/gearing or other differences that we can't be sure of (given the lack of information on the second graph I pulled from the internet)... of course that's why I posted - but so far these are the closest graphs I've seen.


Combined graphs: note, I rounded all numbers based on how well I could read the graphs above.



* the E-Force makes almost 75 ft-lbs more torque at 3,000 RPM and below; but the ECS unit quickly reaches parity at ~4,000 RPM and makes 40 ft-lbs or more than the E-Force unit at 4,500 and above.

* HP is similar through 4,000 RPM: ECS 1500 makes 25+ HP more at 4,500 RPM and above - with peak HP at 5,500 RPM bringing a 50HP advantage to ECS.


These graphs are not terribly surprising - however it is nice to see a definitive range of where each system is more powerful. I will also admit that the E-Force has an advantage higher into the power-band of the LS3 than I would have expected (~3,500 RPM). However, I think that if one realistically watches the tachometer while driving, very few of us do any performance driving where we do not stay above 3,500 RPM when getting on the car. That range is typically for highway cruising or stop-and-go traffic - where boost is not demanded or required.

If we are realistic and say "where is my engine when I pass someone, or when I get on it from a stop light?" then I think most of us will agree we're going to see 4,500 to 5,000 RPM before shifting, even under the most forgiving of drivers who are not comfortable pushing a 6,500+ RPM redline (what these engines were built for...).

To each their own, of course - but since so many of us want "OEM driveability - but with more power when we need it!" it appears that the centri units match this quite well. So if you want OEM driveability, and you're not stomping on the pedal under 3,000 RPM, why choose a unit who's primary advantage is in this band? As I've asked before, is anyone really passing someone on a two-lane road in sixth gear?

 

Killer runs.. OMG.. I'm impressed.. After reading all of this thread I was beginning to second guess my Eforce purchase.. Nice numbers.. I'm assuming you have the 600 (1591) kit plus headers, and cam?? How is it for everyday driving?? How much gas mileage did you loose??

 

Dallas performance D1SC kit
Dallas performance Fi Cam.
WCCH heads
alky meth.
LG 1 7/8" super pro's
13# peak, very conservative tune
this was with a 4 3/8" pully on the blower.


if you want to roast your tires off the line, or race from 1500 rpm in a gear.. PD blower..

for power in the rpm range most races are run in ( besides initial launch) Centri or turbos imo.

 

This is a good point. In driving both my 04 Cobra and an 03 Lightning, I felt like the cars seemed slower than their numbers would suggest. I drove the Lightning first and assumed that it was a weak running example. With the Cobra the car was obviously fast, but as said above, it felt "flat". And if I am honest, blowing off the tires every time I attempted to accelerate under 40 miles per hour, became a little annoying in day to day traffic.

Also, heat soak was unreal with the Cobra. On a hot Texas day it could feel like I was down 80 horsepower than when the engine had just been started up on a 60 degree day.

I would say my LS3 C6 with headers and a tune is about equal in speed, maybe a little faster, than my Cobra was, but because of the power band building up the way it does, it feels considerably faster when accelerating.

I initially believed I would enjoy roots style blowers more than anything because of the claims that "they are best for the street" and me being annoyed with a naturally aspirated build killing all of my power under 3000 rpm, making be believe that what a car needed to be fun was epic low end torque.

The nice thing with a centri is unlike an NA build you don't lose any power down low, you gain everywhere, but it still builds up its power through the power band like an NA motor, instead of smacking you in the face with a borderline unusable torque curve and "flat" feeling acceleration.

Now all that said I don't have any comparison dyno graphs and as stated my C6 is currently N/A. But I do have the experience of having owned N/A, turbo, and Roots equipped cars, and daily driving them. Maybe it will help someone with their decision.

 

There certainly is an "out of the box A&A kit"
One was delivered to my door! They are ALL out of the box!
Just mail your ecm to A&A.
They flash it and return it. You have it back before your ready.
Yes you can use a custom tune for best result.
All day easy repeatable results? EFORCE? When there is at least two or more posting
in this thread that thats Questionable at best!

 

Wow, I have an eforce and am runing 11.5 consistently not probs.. Out of the box with an ultra safe tune.. The blower fits like a glove, and couldnt be happier. All I had to do is grab some good DR's I'm good to go.. With the AA you will need a good custom tune so plan on spending an extra $500.. I almost went with AA but like the low end torque over the centri.. Purely my preference thats all

 

What kind of power are you making? What other mods exactly?

 

This is a V3si trim on my 2008 Z-06 with it pretty much fully heat soaked.
Even fully heat soaked it had 441rwtq min @2500 so you can see where a stock car
comes up short.
It has a 1500 Paxton now.

 

530 rwhp, mods are Eforce 599, and AR headers 1 7/8 cat delete, and some NTO5R Dr's.. Actually ran an 11.3 a couple weeks ago.. I got the slow it down warning for exceeding the 11.5 with no cage.. I wont cage the car so I'm done with adding horsepower.. Low 11's is perfect for this set up, and the car drives so nice on the street still gettting 26 MPG..

 

Since your so busy bashing Eforces and their owners I will have to throw in that those are pathetic results. Here is the sheet from my car. Stock with eforce and alky control. And just to make things more clear... its an LS2, not an Z06 !! 441rwtq doesnt even exist on my car.

 

Yes those were with a V-3si trim! That was running at 230 plus degree's. HEAT SOAKED! I have a 1500 Paxton on it now!
Making more than yours! I have more like 675 to the wheels!
plus
My car is certainly FASTER than yours!
Talking about the little girls on here and there panties in a bunch!
I don't have any problem with the Eforce or the owners. I didn't bash anyone! I just pointed out that 119 mph trap speed is slow for a F/I car then I get smart remarks and bashed back. You can take a long walk off a short pier!

 

A battle of wits with an unarmed man.... I'll pass. Have a good day.

 

Yes, I did feel that way about you! You have a good day also!

 

Ha....that literally made me lol

 

[QUOTE=Rock'n Blue 08;1580986169]Yes those were with a V-3si trim! That was running at 230 plus degree's. HEAT SOAKED! I have a 1500 Paxton on it now!
Making more than yours! I have more like 675 to the wheels!
plus
My car is certainly FASTER than yours!

Did I miss - what are your 1/4 results?