UR Short Ram Installed
Right...but the Manufacturer reports Hp and Tq numbers at the engine. You get less at the wheels than that due to the (AWD) Drivetrain. A common rule of thumb is to subtract 15-20% to give you a more realistic at-the-wheels power level. That puts it around 190 - 201Hp, yet your car Dyno reports 20-30Hp more. That's why those guys are skeptical.
Examples:
JONRalli09 made 208Hp and 230Tq pre-tune...
GST motorsports stock Ralliart put down 192Hp / 217Tq at the wheels (on a Dyno known for having a bit lower numbers)
AMS's Ralliart made 195Hp / 210Tq stock.
(Dr1fter beat me to it, spent too long trolling old threads for numbers
)
Examples:
JONRalli09 made 208Hp and 230Tq pre-tune...
GST motorsports stock Ralliart put down 192Hp / 217Tq at the wheels (on a Dyno known for having a bit lower numbers)
AMS's Ralliart made 195Hp / 210Tq stock.
(Dr1fter beat me to it, spent too long trolling old threads for numbers
)
Last edited by Seawolf; May 6, 2009 at 05:50 AM. Reason: Dr1fter beat me
Right...but the Manufacturer reports Hp and Tq numbers at the engine. You get less at the wheels than that due to the (AWD) Drivetrain. A common rule of thumb is to subtract 15-20% to give you a more realistic at-the-wheels power level. That puts it around 190 - 201Hp, yet your car Dyno reports 20-30Hp more. That's why those guys are skeptical.
Examples:
JONRalli09 made 208Hp and 230Tq pre-tune...
GST motorsports stock Ralliart put down 192Hp / 217Tq at the wheels (on a Dyno known for having a bit lower numbers)
AMS's Ralliart made 195Hp / 210Tq stock.
(Dr1fter beat me to it, spent too long trolling old threads for numbers
)
Examples:
JONRalli09 made 208Hp and 230Tq pre-tune...
GST motorsports stock Ralliart put down 192Hp / 217Tq at the wheels (on a Dyno known for having a bit lower numbers)
AMS's Ralliart made 195Hp / 210Tq stock.
(Dr1fter beat me to it, spent too long trolling old threads for numbers
)
That's the best way to approach it. As IdriveRA is saying, in a nutshell, you cannot say that Dyno sheet X = Dyno sheet Y. Even the same dyno will give different results on a different day. What you can rely on, though, is the gain. No matter where you started from, or where you finished at, if the dyno says you gained 57Hp, then you gained 57Hp 
Great gain by the way. I especially love the torque curve of the tune. I bet it drives really great around town now.
Great gain by the way. I especially love the torque curve of the tune. I bet it drives really great around town now.
Why is everybody reading the max column on the dynos? You take the average number, not the extreme values. He went from 193 whp and 211 wtq stock to 224 whp and 249 wtq with all his mods. It looks like the intake just increased the power a bit, maybe because it leaned out the mixture slightly or allowed a higher boost pressure. What would be interesting though is to see how the intake performs in stop and go situations, ie. dyno the car 10 times without a fan to cool it off. I suspect that given the design, you'll start losing power quickly since it's right beside the engine.
Those dyno fans already do an inadequate job of cooling. Their windspeed is something like 7-8MPH when it hits the front of the car, not 55MPH like when you are driving. A "real" test would be to do it with a temperature probe after the filter in the OEM intake, and again with the short-ram while driving. I know some Ford Focus owners that have done it, and the total heat soak gained was only a few*...which was more than offset by Hp gained due to the large increase in airflow.
And, because peak is peak. He gained 57whp peak. It's still a nice number. Horsepower tends to be conveyed in peak values, because it (often) peaks at max engine RPMs. I understand looking at the average value of Torque, though...as I indicated, he has nice "area under the curve" on his torque graph compared to the original.
And, because peak is peak. He gained 57whp peak. It's still a nice number. Horsepower tends to be conveyed in peak values, because it (often) peaks at max engine RPMs. I understand looking at the average value of Torque, though...as I indicated, he has nice "area under the curve" on his torque graph compared to the original.
Last edited by Seawolf; May 6, 2009 at 10:24 AM.
Just asking since colder air (denser air) in a turbo car increases HP, while hot air drops HP, hence adding an IC really increases power and putting an even larger one provides even more HP at higher revs when the air temp really starts to rise.
Didn't mean on knocking your intake, just asking if it really helps.
Those dyno fans already do an inadequate job of cooling. Their windspeed is something like 7-8MPH when it hits the front of the car, not 55MPH like when you are driving. A "real" test would be to do it with a temperature probe after the filter in the OEM intake, and again with the short-ram while driving. I know some Ford Focus owners that have done it, and the total heat soak gained was only a few*...which was more than offset by Hp gained due to the large increase in airflow.
And, because peak is peak. He gained 57whp peak. It's still a nice number. Horsepower tends to be conveyed in peak values, because it (often) peaks at max engine RPMs. I understand looking at the average value of Torque, though...as I indicated, he has nice "area under the curve" on his torque graph compared to the original.
And, because peak is peak. He gained 57whp peak. It's still a nice number. Horsepower tends to be conveyed in peak values, because it (often) peaks at max engine RPMs. I understand looking at the average value of Torque, though...as I indicated, he has nice "area under the curve" on his torque graph compared to the original.
Never mind, I read the dyno wrong. I assumed average was the average between several runs, not the average on one run (which is very odd). How the hell did he dyno 228 whp and 251 wtq stock? That makes zero sense. Something very strange is going on here.
Right. I wonder if the correction factor tried to "correct" the drivetrain losses...? It says some Filter called FIR is set to 6 in his graph.
Yeah I wonder if a correction factor was applied that conveniently made the numbers freakishly high. A 50 WHP gain from an intake and a tune is insane.


