372 Whp
Hey SaiouthHajime, try putting CO2 in the sprayer and see what happens on a run. There is a lot of speculation about the intake injesting the nitrous from the sprayer and then giving false readings as to how much the sprayer actually helps. In a worst case senario you could be adding nitous into the equasion without giving the engine the fuel to support it. Something to look into.
Damn MalibuJack, you were a bit quiker on the draw then me!!
Damn MalibuJack, you were a bit quiker on the draw then me!!
There is a lot of speculation about the intake injesting the nitrous from the sprayer and then giving false readings as to how much the sprayer actually helps.
So this is why it took a day to tune AFRs Didnt you correlate the sprayer being on as +25HP? What were the thoughts running through the tune session with lean to super rich runs? Was everyone stummped and scratching heads? Those N2) bottles dont last that long so did you refill it and head back overthere in the morning? 
Didnt you correlate the sprayer being on as +25HP? What were the thoughts running through the tune session with lean to super rich runs? Was everyone stummped and scratching heads? Those N2) bottles dont last that long so did you refill it and head back overthere in the morning?
In Timeout
Joined: Jan 2004
Posts: 326
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From: Kennesaw Ga
lolrof, Truth!
Originally posted by MP5
So this is why it took a day to tune AFRs Didnt you correlate the sprayer being on as +25HP? What were the thoughts running through the tune session with lean to super rich runs? Was everyone stummped and scratching heads? Those N2) bottles dont last that long so did you refill it and head back overthere in the morning?
So this is why it took a day to tune AFRs
Didnt you correlate the sprayer being on as +25HP? What were the thoughts running through the tune session with lean to super rich runs? Was everyone stummped and scratching heads? Those N2) bottles dont last that long so did you refill it and head back overthere in the morning?
Evolved Member
Joined: May 2002
Posts: 1,290
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From: CA
Either way, with that list of mods, and tuning the air/fuel and timing, I'm sure the car pulls like a beast. Numbers are pointless since a skilled driver can woopass with a much worse car. My only concern is that on 91 **** octane, a "bad batch" and the wrong conditions could induce some detonation and if you are approaching 200hp/liter I'd be carefull or else you may find yourself making 0 WHP.
Just for all you people who believe that a car will dyno higher in 3rd gear than 4th. YOU ARE WRONG.
The dyno measures the change in energy over a given time. It takes more energy to spin the drum at 20 RPM's than it does at 15 RPM's.
The dyno compares the Change in Rotational energy between time 1 and time 2, it does this constantly at multiple times per second. It then divides the change in rotational energy by the time (in seconds) between time 1 and time 2. This is power.
Power = work/time in this case the work is the rotational energy.
On turbo cars, the reason you should get higher numbers in higher gears is because the load on the motor is higher due to the lesser mechanical advantage of the gearing.
With horsepower determined. Torque can be found if an RPM signal is known at each time interval by using
T = 5252 x (HP)/ (RPM)
Brian
The dyno measures the change in energy over a given time. It takes more energy to spin the drum at 20 RPM's than it does at 15 RPM's.
The dyno compares the Change in Rotational energy between time 1 and time 2, it does this constantly at multiple times per second. It then divides the change in rotational energy by the time (in seconds) between time 1 and time 2. This is power.
Power = work/time in this case the work is the rotational energy.
On turbo cars, the reason you should get higher numbers in higher gears is because the load on the motor is higher due to the lesser mechanical advantage of the gearing.
With horsepower determined. Torque can be found if an RPM signal is known at each time interval by using
T = 5252 x (HP)/ (RPM)
Brian
Originally posted by metaphysical
No speculation. If you watch this happen on a dyno...you can watch the nitrous get sucked back in. Was the case on Al's car.
No speculation. If you watch this happen on a dyno...you can watch the nitrous get sucked back in. Was the case on Al's car.
Good point, but the stock airbox would be less likely drawing the air into the box, especially with a big honkin fan blowing air on the car's front end.. the under-hood filter, well, your getting whatever air comes under the car, through the grill and under the hood.. so if its tainted with nitrous you'll get more power..
Originally posted by TURBODAWG
Just for all you people who believe that a car will dyno higher in 3rd gear than 4th. YOU ARE WRONG.
The dyno measures the change in energy over a given time. It takes more energy to spin the drum at 20 RPM's than it does at 15 RPM's.
The dyno compares the Change in Rotational energy between time 1 and time 2, it does this constantly at multiple times per second. It then divides the change in rotational energy by the time (in seconds) between time 1 and time 2. This is power.
Power = work/time in this case the work is the rotational energy.
On turbo cars, the reason you should get higher numbers in higher gears is because the load on the motor is higher due to the lesser mechanical advantage of the gearing.
With horsepower determined. Torque can be found if an RPM signal is known at each time interval by using
T = 5252 x (HP)/ (RPM)
Brian
Just for all you people who believe that a car will dyno higher in 3rd gear than 4th. YOU ARE WRONG.
The dyno measures the change in energy over a given time. It takes more energy to spin the drum at 20 RPM's than it does at 15 RPM's.
The dyno compares the Change in Rotational energy between time 1 and time 2, it does this constantly at multiple times per second. It then divides the change in rotational energy by the time (in seconds) between time 1 and time 2. This is power.
Power = work/time in this case the work is the rotational energy.
On turbo cars, the reason you should get higher numbers in higher gears is because the load on the motor is higher due to the lesser mechanical advantage of the gearing.
With horsepower determined. Torque can be found if an RPM signal is known at each time interval by using
T = 5252 x (HP)/ (RPM)
Brian
No, the reason I got higher numbers the second day is because we decided to do a test to make sure the nitrous was going in the intake, so we did a run with the sprayer, and ran 378WHP then we did a run with the sprayer, but with the hood closed, and ran the 398.
Originally posted by MalibuJack
Good point, but the stock airbox would be less likely drawing the air into the box, especially with a big honkin fan blowing air on the car's front end.. the under-hood filter, well, your getting whatever air comes under the car, through the grill and under the hood.. so if its tainted with nitrous you'll get more power..
Good point, but the stock airbox would be less likely drawing the air into the box, especially with a big honkin fan blowing air on the car's front end.. the under-hood filter, well, your getting whatever air comes under the car, through the grill and under the hood.. so if its tainted with nitrous you'll get more power..
Originally posted by MP5
As I alluded to its how the dyno measures it but I can find 25 HP by pulling in 3rd! done it time and again on a mustang
As I alluded to its how the dyno measures it but I can find 25 HP by pulling in 3rd! done it time and again on a mustang
The 25HP increase defeats many laws of physics. Oh well, what did those old farts know anyhow.
If all Mustang dyno's do this, then they have a fundamental flaw in their design. If thats the case, then the Dynojet is definitely the more accurate of the two.
Brian