You want to know who much HP you are making?
02-25-2009, 08:26 AM
#22
5th Gear Member
Join Date: Mar 2007
Location: Orlando, FL
Posts: 2,031
I use formulas at work all day, so for my mustang I use trap speed... I've done 122.7 mph in the 1/4 mile, that's how much horsies I'm putting down. 
I'd like to see the theorem for that formula to see how it accounts for real-life variables such as boosting and engine efficiencies. Any engineer knows that theory and field can be very different.
I'd like to see the theorem for that formula to see how it accounts for real-life variables such as boosting and engine efficiencies. Any engineer knows that theory and field can be very different.
02-25-2009, 09:40 AM
#24
Thread Starter
Join Date: Jan 2009
Location: MA
Posts: 45
I still have to question how good these "estimations" are with these formulas. I would actually put my money on the dyno being more correct than these formulas. And to be honest, I don't really care too much what kind of numbers my car puts down. What matters is what it runs at the track!
Well I got into a head on with a F350 with the subaru. The insurance company put $14k into thee car to "fix" it. The Sti was never the same after that. The mustang IMO is MUCH better looking, get better MPG, runs on 87, sounds much better, and IMO will handle as good as the Sti on the same tires. The Sti could make a bad driver look like a pro, IMO you have to know how to drive to make the mustang handle well. And getting the mustang cut my car payment in half.
Have only had the mustang for about a month. The first thing I do when I get a different car is research the hell out of it to figure out where my money would best be spent. So far CAI, tune, LCA's and tires. Then port and polish every thing I can, this is free for me just my time.
02-25-2009, 01:42 PM
#26
4th Gear Member
Join Date: Sep 2007
Location: Texas
Posts: 1,258
I did that without even trying. Actually a lot of people run mid 12's with just bolt ons.
What is 233gm? Is that the same as MAF counts?
This gauge records MAF counts and lbs. per minute. It also records crank horsepower, probably using a similar formula.
I have free software to tune my motorcycle. Even if there was free software to tune my mustang, I wouldn't do it. There really isn't much need for it, like someone else said.
What is 233gm? Is that the same as MAF counts?
This gauge records MAF counts and lbs. per minute. It also records crank horsepower, probably using a similar formula.
I have free software to tune my motorcycle. Even if there was free software to tune my mustang, I wouldn't do it. There really isn't much need for it, like someone else said.
Sorry, i'm a little OCD... but your guage isn't level :-x
I couldn't help myself lol sorry!
02-25-2009, 02:05 PM
#27
Thread Starter
Join Date: Jan 2009
Location: MA
Posts: 45
I am using an ActronCP9180 to log the MAF.
It is 233 grams per second. Your gauge reads pounds per hour, same thing different units. Very cool gauge, what is it?
If you read my last post the amount of air that enters an engine is the theoretical amount of HP that can be made. In the real world we are limited by octane, engine efficiency, and tuning. If youdon't get AFR and timing right you won't take advantage of the air going into the motor.
I did that without even trying. Actually a lot of people run mid 12's with just bolt ons.
What is 233gm? Is that the same as MAF counts?
This gauge records MAF counts and lbs. per minute. It also records crank horsepower, probably using a similar formula.
I have free software to tune my motorcycle. Even if there was free software to tune my mustang, I wouldn't do it. There really isn't much need for it, like someone else said.
What is 233gm? Is that the same as MAF counts?
This gauge records MAF counts and lbs. per minute. It also records crank horsepower, probably using a similar formula.
I have free software to tune my motorcycle. Even if there was free software to tune my mustang, I wouldn't do it. There really isn't much need for it, like someone else said.
I use formulas at work all day, so for my mustang I use trap speed... I've done 122.7 mph in the 1/4 mile, that's how much horsies I'm putting down.
I'd like to see the theorem for that formula to see how it accounts for real-life variables such as boosting and engine efficiencies. Any engineer knows that theory and field can be very different.
I'd like to see the theorem for that formula to see how it accounts for real-life variables such as boosting and engine efficiencies. Any engineer knows that theory and field can be very different.
If you read my last post the amount of air that enters an engine is the theoretical amount of HP that can be made. In the real world we are limited by octane, engine efficiency, and tuning. If youdon't get AFR and timing right you won't take advantage of the air going into the motor.
02-25-2009, 02:37 PM
#28
4th Gear Member
Join Date: Sep 2007
Location: Texas
Posts: 1,258
http://www.steeda.com/products/aerof...ble_gauges.php
02-25-2009, 04:39 PM
#30
5th Gear Member
Join Date: Mar 2007
Location: Orlando, FL
Posts: 2,031
If you read my last post the amount of air that enters an engine is the theoretical amount of HP that can be made. In the real world we are limited by octane, engine efficiency, and tuning. If youdon't get AFR and timing right you won't take advantage of the air going into the motor.