Went and did the dyno thing...
12-16-2006, 05:05 PM
#1
Went and did the dyno thing... Even though I haven't settled on the tune yet (will be moving to 3bar) I really wanted (needed 
) to see where the car was at...
I run 15 to 15.5 psi on the street and it feels hella strong. I got on the dyno and only got 1 good pull before the car shredded the belt (need to get a stock alternator to use the NEW PTK brackets with). The first pull on the street would have made about 14psi, but it spooled slow as **** and only made 10psi on the dyno. The car made 589RWHP at that 10psi on a dynojet dyno. From the beginning I was hoping for 700RW on pump and meth, and at the 15ish PSI I run on the street I'd guess that it's somewhere around there. This was with 15deg timing at peak tq moving up to 17deg up top. There is probably a little room to go up on the timing, but I am comfortable with it where it's at.
I was disappointed that I didn't get to make bigger numbers, but encouraged by what it did make and the level it made it at. LS1tech has been a huge resource, so I wanted to tell everyone here thanks and happy holidays.
-Steve Williams
) to see where the car was at...I run 15 to 15.5 psi on the street and it feels hella strong. I got on the dyno and only got 1 good pull before the car shredded the belt (need to get a stock alternator to use the NEW PTK brackets with). The first pull on the street would have made about 14psi, but it spooled slow as **** and only made 10psi on the dyno. The car made 589RWHP at that 10psi on a dynojet dyno. From the beginning I was hoping for 700RW on pump and meth, and at the 15ish PSI I run on the street I'd guess that it's somewhere around there. This was with 15deg timing at peak tq moving up to 17deg up top. There is probably a little room to go up on the timing, but I am comfortable with it where it's at.
I was disappointed that I didn't get to make bigger numbers, but encouraged by what it did make and the level it made it at. LS1tech has been a huge resource, so I wanted to tell everyone here thanks and happy holidays.
-Steve Williams
12-16-2006, 06:13 PM
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Hey, Steve... happy holidays right back 'atcha.
I wouldn't fret over the dyno. If you don't see the boost you know you can make on the street, you surely won't see representative numbers on the dyno.
As for the belt, yah, been there. My present setup shredded one rib and has been happy ever since, knock on wood. I will not fix what ain't broke. Yet, anyway.
Hey, if you want to see a decent representation of what kind of power you're putting down on the street, get Santa to give you a GTech for Christmas. You can dial in the unit to your car by calibrating rpm and giving it an absolutely accurate weight for the car... and then you can do a "dyno run" with the car all the way through 2nd gear (trick here is to progress to WOT as quickly as possible WITHOUT any wheelspin). The unit will create a dyno curve for you:
That's my car with a couple of NA setups and then the green is obviously on the snail. The numbers are less (50 hp/tq or so) than what you'll generate on a dyno because of rolling resistance and aero drag, but it's a nice way to test out your car from time to time and see what sort of comparitive power/torque you're making.(Obviously, you have to find a good length of flat road without Johnny Law or other traffic, and run every test there). And you can also goof with the unit to see 0-60, 1/8th, 1/4 times and speeds.
Rich
I wouldn't fret over the dyno. If you don't see the boost you know you can make on the street, you surely won't see representative numbers on the dyno.
As for the belt, yah, been there. My present setup shredded one rib and has been happy ever since, knock on wood. I will not fix what ain't broke. Yet, anyway.
Hey, if you want to see a decent representation of what kind of power you're putting down on the street, get Santa to give you a GTech for Christmas. You can dial in the unit to your car by calibrating rpm and giving it an absolutely accurate weight for the car... and then you can do a "dyno run" with the car all the way through 2nd gear (trick here is to progress to WOT as quickly as possible WITHOUT any wheelspin). The unit will create a dyno curve for you:
That's my car with a couple of NA setups and then the green is obviously on the snail. The numbers are less (50 hp/tq or so) than what you'll generate on a dyno because of rolling resistance and aero drag, but it's a nice way to test out your car from time to time and see what sort of comparitive power/torque you're making.(Obviously, you have to find a good length of flat road without Johnny Law or other traffic, and run every test there). And you can also goof with the unit to see 0-60, 1/8th, 1/4 times and speeds.
Rich
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12-17-2006, 02:40 AM
#8
Rich, so you like the G-tech? I really don't know much about the unit. I CAN say, that with the 315 nittos that a pull in second gear with no wheel spin is a pipe dream 
Once they are sticky, or have been spun over a bit though they hold 3rd gear without a problem. Could the pulls be made from there?
Yeah, I'll be moving to the th400 before next race season, but damn this M6 is nice on the street... It's harder to give up than I thought it'd be. My car is an '01. Even if I could find the graph, it is in NO WAY representative of how the car drives (tq curve wise).
I had some nice 116 in there (which promptly tanked my O2s and f'd up my close loop control that was masking my incomplete VE tuning) and was HOPING to see where my fuel system was gonna run out. It would have been nice to see what 18-21psi would have put down. Any guesses there?
The only REAL test is trap speed.
Once they are sticky, or have been spun over a bit though they hold 3rd gear without a problem. Could the pulls be made from there?
Originally Posted by sagres
Arent you going TH400 Steve? I got a 400, but am still looking for a 4L80e. Good luck bud. Is your car a 98?
I had some nice 116 in there (which promptly tanked my O2s and f'd up my close loop control that was masking my incomplete VE tuning) and was HOPING to see where my fuel system was gonna run out. It would have been nice to see what 18-21psi would have put down. Any guesses there?
The only REAL test is trap speed.
12-17-2006, 08:08 AM
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Originally Posted by MiaSSmaro98
so what is a good dyno for a turbo car?
12-17-2006, 08:41 AM
#12
Yeah, I'll be moving to the th400 before next race season, but damn this M6 is nice on the street... It's harder to give up than I thought it'd be. My car is an '01. Even if I could find the graph, it is in NO WAY representative of how the car drives (tq curve wise
you think you have traction problems now? an auto will make it way worst on the street! but you'll get that easy launch at the track.
you think you have traction problems now? an auto will make it way worst on the street! but you'll get that easy launch at the track.
12-17-2006, 10:13 AM
#13
Originally Posted by otherwhitemeat
you think you have traction problems now? an auto will make it way worst on the street! but you'll get that easy launch at the track.
12-17-2006, 10:59 AM
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Originally Posted by Frost
I had some nice 116 in there (which promptly tanked my O2s and f'd up my close loop control that was masking my incomplete VE tuning) and was HOPING to see where my fuel system was gonna run out. It would have been nice to see what 18-21psi would have put down. Any guesses there?
The only REAL test is trap speed.
The only REAL test is trap speed.
12-17-2006, 06:11 PM
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I CAN say, that with the 315 nittos that a pull in second gear with no wheel spin is a pipe dream Once they are sticky, or have been spun over a bit though they hold 3rd gear without a problem. Could the pulls be made from there?
As for the dyno... I think a mustang dyno is the optimum for loading the car, with the realization that the numbers will be less than those obtained on a dynojet.
