My road to 500 rwhp (hopefully)
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Sorry for the noob question but will the data log indicate if there's a air leak in the line?
Btw, which line are you guys referring to so I can check?
Edwin
Btw, which line are you guys referring to so I can check?
Edwin
I'm not sure if it will show in the data log, but if the air/fuels are going nuts even on the data logging we may want to check that first. I am with Tony that the tune shouldn't have changed with a different car. The variables are the same on the 996TT no matter car they are in. I'm sure its nothing big and we can get it figured out easily.
Also for what its worth (and I forgot to tell you) if Steve sets the reading of the dyno to STD or Uncorrected I can almost guarantee that it made almost if not more than 500rwhp on the dyno because of the weather. Remember what I explained to you about dyno correction factors. The STD/Uncorrected numbers are going to be close to REALLY what you are making in this weather, not what you are making at ambient temperatures with a set type of weather.
I'm glad you had a thread going where you can backup the numbers Seal Gray had in his car so that people will see the beauty of the 16G turbo.
Also for what its worth (and I forgot to tell you) if Steve sets the reading of the dyno to STD or Uncorrected I can almost guarantee that it made almost if not more than 500rwhp on the dyno because of the weather. Remember what I explained to you about dyno correction factors. The STD/Uncorrected numbers are going to be close to REALLY what you are making in this weather, not what you are making at ambient temperatures with a set type of weather.
I'm glad you had a thread going where you can backup the numbers Seal Gray had in his car so that people will see the beauty of the 16G turbo.
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As the person that did ran Edwin's car on the dyno, let me just state a few facts. I ran the car both without fans and then with fans in both the intercoolers and the radiators. There was no appreciable horsepower increase from putting fans on the car. What was gained is consistency from one run to the next. For instance, on 2 pulls completed with a 3 minute or so break inbetween without fans, power would drop off due to heat soak (as expected). However, on 2 subsequent pulls (at a later time), again 3 minutes or so apart with fans in both the intercoolers and radiators this time, peak hp and torque were within 5 of the initial (without fans) pull. What changed was that on the second run, the numbers stayed the same instead of dropping from heat soak.
I think it shows the consistency of Dynojet Dynos that even running the car on a 50 degree day versus a 75-80 degree day, the dyno numbers are very close. In fact, peak hp was a negligible gain while peak torque did increase (around 18lb-ft).
Also, let me explain what Tony @ EPL meant about not having any air flow through the dyno room. Our room is well ventilated with a large garage door to get in and out of the dyno room. What is not there is a garage door on the other side of the dyno to allow a "breeze" to flow through the room from one side to the other. That is it. Our dyno has been serviced to ensure proper operation.
On another note, all our dyno runs are done with a SAE correction factor and an altitude setting of 35 ft.
BTW, this is all just FYI. I'm new to this forum so I just wanted everyone to know and say hello!
Steve Ott
I think it shows the consistency of Dynojet Dynos that even running the car on a 50 degree day versus a 75-80 degree day, the dyno numbers are very close. In fact, peak hp was a negligible gain while peak torque did increase (around 18lb-ft).
Also, let me explain what Tony @ EPL meant about not having any air flow through the dyno room. Our room is well ventilated with a large garage door to get in and out of the dyno room. What is not there is a garage door on the other side of the dyno to allow a "breeze" to flow through the room from one side to the other. That is it. Our dyno has been serviced to ensure proper operation.
On another note, all our dyno runs are done with a SAE correction factor and an altitude setting of 35 ft.
BTW, this is all just FYI. I'm new to this forum so I just wanted everyone to know and say hello!
Steve Ott
Thanks for taking the time to post! Thanks again for the great install and awesome service. You, your team and the facility at Driver Source are top notch.
Edwin
As the person that did ran Edwin's car on the dyno, let me just state a few facts. I ran the car both without fans and then with fans in both the intercoolers and the radiators. There was no appreciable horsepower increase from putting fans on the car. What was gained is consistency from one run to the next. For instance, on 2 pulls completed with a 3 minute or so break inbetween without fans, power would drop off due to heat soak (as expected). However, on 2 subsequent pulls (at a later time), again 3 minutes or so apart with fans in both the intercoolers and radiators this time, peak hp and torque were within 5 of the initial (without fans) pull. What changed was that on the second run, the numbers stayed the same instead of dropping from heat soak.
I think it shows the consistency of Dynojet Dynos that even running the car on a 50 degree day versus a 75-80 degree day, the dyno numbers are very close. In fact, peak hp was a negligible gain while peak torque did increase (around 18lb-ft).
Also, let me explain what Tony @ EPL meant about not having any air flow through the dyno room. Our room is well ventilated with a large garage door to get in and out of the dyno room. What is not there is a garage door on the other side of the dyno to allow a "breeze" to flow through the room from one side to the other. That is it. Our dyno has been serviced to ensure proper operation.
On another note, all our dyno runs are done with a SAE correction factor and an altitude setting of 35 ft.
BTW, this is all just FYI. I'm new to this forum so I just wanted everyone to know and say hello!
Steve Ott
I think it shows the consistency of Dynojet Dynos that even running the car on a 50 degree day versus a 75-80 degree day, the dyno numbers are very close. In fact, peak hp was a negligible gain while peak torque did increase (around 18lb-ft).
Also, let me explain what Tony @ EPL meant about not having any air flow through the dyno room. Our room is well ventilated with a large garage door to get in and out of the dyno room. What is not there is a garage door on the other side of the dyno to allow a "breeze" to flow through the room from one side to the other. That is it. Our dyno has been serviced to ensure proper operation.
On another note, all our dyno runs are done with a SAE correction factor and an altitude setting of 35 ft.
BTW, this is all just FYI. I'm new to this forum so I just wanted everyone to know and say hello!
Steve Ott
Thanks for taking the time to post. In general a 996 will lose 20-25 horsepower per pull without fans. 3 back to back pulls without fans will be down nearly 65 wheel horsepower and will take a very long time to recover from heat soak. This is something that we've repeated numerous times here on our dyno in CT.
Its likely the heat soak damage was done by the time the fans were directed on the intercoolers.
Proper fans and fan placement is something that is often over looked on these cars. I have yet to tune on a dyno, my shop included, that has the ability to replicate air movement even close to what can be measured on the street.
Its also important to realize that the 996tt, with proper fan placement, will not produce peak power on its first pull. On our dyno here, we often times need to do 2 to 3 pulls to produce maximum power.
For these reasons it can be so difficult to sort through good dyno data vs bad data.
This is a good read on dyno testing procedure. All through my views and AWE's differed, we both have a specific repeatable test method.
http://www.caymanclub.net/cayman-box...dyno-test.html
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Thanks Steve and Tony for the insight. Sorry if I missed it but is the whole issue of heat soak/fans/etc being discussed a suspect in causing my AFR issue or is the issue only addressing true HP gains?
Edwin
Edwin
Requested load and a/f are both effected by intake air temperatures(IAT). In general anything above 40c (104f) will cause fuel enrichment...the hotter the IAT gets, the more fuel is added and the less boost is run.
Thanks,
Tony
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That's great to hear
That is what it's all about Edwin