Well finally got the car on the dyno. ended up with 266whp and 266tq @ 12pds of boost. The car is screaming for a big turbo. driveability on the car is great. Very happy with the outcome now to save some cash for the turbo.

 

Can you post the dyno graph?


-Ted

 

Ended up leaving the print out. after a few hours of tuning, it being 12:30am, and work in the morning. I was just so happy the car was done and couldn't get it off the dyno and on the road fast enough.

 

wonder how those egts are?

 

torque equal to horsepower?

This is a rotary engine right?

Where does it peak? AFR's?

 

I think about 6-7k. couldn't tell you the wideband was green .

smokin joe tuned the car at tri-state in queens.

 

so how much does teh boost drop off up top? we demand dyno sheet!

 

Damn that thing certainly does need a bigger turbo. 266 is very good for a stock turbo though, stock port or not. Any plans for big turbo anytime soon?

 

HELL YEAH!!!!!! JUst need some cash. i am taking donations if anyone wants to chip in.

 

Any idea what turbo your gonna shoot for? Or what sort of hp goals you have. ill be watching this build closely, seems like a good one.

 

i'm going crazy trying to find the right turbo. I was looking at the garrett gt42r, which i've been told I probably won't like for the street. I just started looking at presicion turbos which I heard good things about. Really have no idea and the money is tight right now. So as soon as the cash comes in I'll be picking up random parts here and there. I'm aiming for 500 on pump gas at low boost.

 

266ft lbs of torque on the stock turbo, wow..

 

I was going to use something other then "wow".......but hey - wow works I guess

 

I don't mean to bring the happy congrats mood down, but I am a little confused. First of all congrats, 266 hp to the wheels sounds really fun.

Reason I'm confused: A street ported NA s5, tuned correctly, and proper intake/exhaust mods puts down around 200 rear wheel HP. ( Or so I hear... correct me if I am wrong.)
My question is, if you are doing 12 PSI, (almost 1 bar I think) shouldnt you be putting almost twice the amount of air into the engine as an NA thats at atmospheric pressure? I know efficiency isn't by far perfect, BUT techincally your only making 5.5 horsepower per PSI. Isn't that kinda low?

Looking at your reactions about the stock turbo, maybe its just that the turbo is way past its limit of efficiency? Maybe PSI isnt as important as flow or the mass of air your getting into your engine? I have heard something about that before, where you can do 12 psi with a smaller turbo, or 6 psi with a bigger turbo and get the same power? Maybe someone could clear this up?

(I WANT to be corrected, and am just curious what the are factors that cause you not to have over 300 HP with your setup.)

Thanks.

 

The boost falls down to 7psi around 5500 rpm's and the car starts making its power around there. So if I had a better turbo that will hold it's boost i'll be WELL over 300.(someone correct me if i'm wrong)

 

Why does the boost fall down?

 

turbo can't flow enough air for the engine. same thing happened to me with stock turbo, except it started falling at 6000

 

anytime now.

 

read above buddy........

 

OHHHHH, the engine is sucking in more air than the turbo can pressurize? I didn't think about that. I thought the more air that went in, the more air that would come out and spin the turbo more, cause even more air to go in, and more air to go out. Is it just the turbos efficiency that causes the engine to pull away from the turbo?

So a bigger turbo would cause it to be able to pressurize more air at higher RPMs (its designed efficiency range), thus causing him to get the 12 psi all the way through to redline. THEN easily hitting 300 hp?

See now only running 7 psi, 266 sounds about right. Almost 10 hp/psi.

Yay! Now I have figured everything out that was confusing me.

Now in this example, would one of the BNR hybrids help or would the stock part of the turbo that your keeping (I dont know if its the hot or cold side) still be the bottleneck?

 

Re-dyno and get a print off....cause I'm doubting 266ft/lbs for torque

 

either put the $125 up for the dyno or call smokin joe racing in elmont, ny ask for joe(he tuned the car). and if you still doubt it im not really concerned .

 

most shops save the dyno runs, can't you go back or have them email it to you? c'mon now.

 

Ok, I'll correct you
Seriously, though, an s5 NA with a very good street port, proper exhaust, CAI, and a very good tune puts down around 190 the wheels if you are lucky. Anything much past that requires an aftermarket intake like ITB's. To my knowledge there are no NA's with street ports and stock intakes that have put down 200 to the wheels.

 

No offence but thats the point....anytime I fork out money for a dyno, I make sure to get a at least a piece of paper for my money And you have to admit that the claim is impressive enough to doubt it without a graph at least.

But if you did thats unpresidented so congrats...