My Turbo S2000 Monster
03-01-2007, 05:33 AM
#111
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I adjusted the BOV before my drive home from work last night. I no longer have any compressor surge!!!! 
I reduced the spring pressure on the BOV which allows the BOV to open earlier and not require significant manifold vacuum.
Done and done
I reduced the spring pressure on the BOV which allows the BOV to open earlier and not require significant manifold vacuum.
Done and done
03-01-2007, 05:34 AM
#112
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Originally Posted by alleykat,Mar 1 2007, 12:35 AM
I just hit the dyno yesterday.Numbers were:
400.12WHP
300??+TQ
Running custom kit with a gt35r at 14psi.Something was wrong with the dyno and it stopped reading torque when it was gonna hit 300.Im guessing a low 300.Maybe 310ish for sure.Im using
aem ems
1000cc injectors
600hp intercooler
3bar map
3in. downpipe exits thru side
topmount mani
dumptube
50mm bov
44mm wastegate
When the new headgasket comes in were definitely turning it up just a little.Maybe to like 18psi.Right now 14psi is more than enough.Pics coming soon..
400.12WHP
300??+TQ
Running custom kit with a gt35r at 14psi.Something was wrong with the dyno and it stopped reading torque when it was gonna hit 300.Im guessing a low 300.Maybe 310ish for sure.Im using
aem ems
1000cc injectors
600hp intercooler
3bar map
3in. downpipe exits thru side
topmount mani
dumptube
50mm bov
44mm wastegate
When the new headgasket comes in were definitely turning it up just a little.Maybe to like 18psi.Right now 14psi is more than enough.Pics coming soon..
This one belongs to me.
Nice numbers though
03-01-2007, 06:14 AM
#114
Originally Posted by alleykat,Mar 1 2007, 12:35 AM
I just hit the dyno yesterday.Numbers were:
400.12WHP
300??+TQ
Running custom kit with a gt35r at 14psi.Something was wrong with the dyno and it stopped reading torque when it was gonna hit 300.Im guessing a low 300.Maybe 310ish for sure.Im using
aem ems
1000cc injectors
600hp intercooler
3bar map
3in. downpipe exits thru side
topmount mani
dumptube
50mm bov
44mm wastegate
When the new headgasket comes in were definitely turning it up just a little.Maybe to like 18psi.Right now 14psi is more than enough.Pics coming soon..
400.12WHP
300??+TQ
Running custom kit with a gt35r at 14psi.Something was wrong with the dyno and it stopped reading torque when it was gonna hit 300.Im guessing a low 300.Maybe 310ish for sure.Im using
aem ems
1000cc injectors
600hp intercooler
3bar map
3in. downpipe exits thru side
topmount mani
dumptube
50mm bov
44mm wastegate
When the new headgasket comes in were definitely turning it up just a little.Maybe to like 18psi.Right now 14psi is more than enough.Pics coming soon..
You can do the calculation off your dyno graph to see what the exact torque is. Just take the hp and multiply it by 5252 and then divide it by the rpm and that's your TQ. This is all the dyno does to get torque also I believe. It's just a calculation the computer does off the run.
From this your actual TQ is going to be closer to 240 not 300 lbft.
03-01-2007, 06:31 AM
#115
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Originally Posted by Spoolin,Mar 1 2007, 10:14 AM
Man that's a lot of torque!
You can do the calculation off your dyno graph to see what the exact torque is. Just take the hp and multiply it by 5252 and then divide it by the rpm and that's your TQ. This is all the dyno does to get torque also I believe. It's just a calculation the computer does off the run.
From this your actual TQ is going to be closer to 240 not 300 lbft.
You can do the calculation off your dyno graph to see what the exact torque is. Just take the hp and multiply it by 5252 and then divide it by the rpm and that's your TQ. This is all the dyno does to get torque also I believe. It's just a calculation the computer does off the run.
From this your actual TQ is going to be closer to 240 not 300 lbft.
03-01-2007, 07:24 AM
#116
Originally Posted by slimjim8201,Mar 1 2007, 10:31 AM
He could still have 300 lb-ft of torque, just not at his power peak. My numbers are very similar as well. My torque maxes at 293 @ 6,000 RPM and drops to 240ish at the power peak.
03-01-2007, 07:32 AM
#117
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Originally Posted by Spoolin,Mar 1 2007, 10:14 AM
You can do the calculation off your dyno graph to see what the exact torque is. Just take the hp and multiply it by 5252 and then divide it by the rpm and that's your TQ. This is all the dyno does to get torque also I believe. It's just a calculation the computer does off the run.
03-01-2007, 07:46 AM
#118
Originally Posted by slimjim8201,Mar 1 2007, 11:32 AM
Dyno's don't actually measure power. Power cannot really be measured. It is a derived unit. Wheel torque is what a dyno measures, and it then calculates the power by knowing how fast the dyno rollers are moving or how fast the engine is spinning + correction factors to take gearing into account.
The only way he can be achieveing this is if he is putting more boost at the lower rpm range and dropping the boost at the higher rpm or he would have 500 + whp if the boost stayed steady all the way to redline.
This will also cause a non flat TQ curve. TQ will hit a peak and then fall off very quickly. It's better to hold a flat TQ curve all the way to redline unless you want to just blow the tires off.
This is what a lot of dyno runners will do to get that WOW effect. You just set up a boost spike where you want to achieve more TQ lower in the RPM range and let it taper off at the top. This is very hard on the engine.
03-01-2007, 08:15 AM
#119
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Originally Posted by Spoolin,Mar 1 2007, 11:46 AM
I know this but you can do the calculations in reverse from his dyno graph and see if it correlates. HP x 5252 / RPM = TQ or TQ x RPM / 5252 = HP.
The only way he can be achieveing this is if he is putting more boost at the lower rpm range and dropping the boost at the higher rpm or he would have 500 + whp if the boost stayed steady all the way to redline.
This will also cause a non flat TQ curve. TQ will hit a peak and then fall off very quickly. It's better to hold a flat TQ curve all the way to redline unless you want to just blow the tires off.
This is what a lot of dyno runners will do to get that WOW effect. You just set up a boost spike where you want to achieve more TQ lower in the RPM range and let it taper off at the top. This is very hard on the engine.
The only way he can be achieveing this is if he is putting more boost at the lower rpm range and dropping the boost at the higher rpm or he would have 500 + whp if the boost stayed steady all the way to redline.
This will also cause a non flat TQ curve. TQ will hit a peak and then fall off very quickly. It's better to hold a flat TQ curve all the way to redline unless you want to just blow the tires off.
This is what a lot of dyno runners will do to get that WOW effect. You just set up a boost spike where you want to achieve more TQ lower in the RPM range and let it taper off at the top. This is very hard on the engine.
Mine, on the other hand, builds to full boost and holds it to redline. The torque drop-off is directly related to the exhaust choking the outlet flow.
03-01-2007, 08:32 AM
#120
Originally Posted by slimjim8201,Mar 1 2007, 12:15 PM
Yeah, I have seen many a tuner set a car up with a tapering boost profile.
Mine, on the other hand, builds to full boost and holds it to redline. The torque drop-off is directly related to the exhaust choking the outlet flow.
Mine, on the other hand, builds to full boost and holds it to redline. The torque drop-off is directly related to the exhaust choking the outlet flow.
