APS Plenum Results are in!!!
Originally Posted by D@ActiveTuning
It's already been posted why in this thread 
He has an 8.5:1 compression which means he needs higher boost for higher gains.
Our normal motors are 10.3:1 compression
He has an 8.5:1 compression which means he needs higher boost for higher gains.
Our normal motors are 10.3:1 compression
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Last edited by Gman2004; Aug 2, 2005 at 07:37 AM.
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Originally Posted by Gman2004
Don't take this personally but you APS guys need to get off your fuking high horses. The reason I referenced that thread is not because he had 445hp on 8.5psi, but because there seeems to be a lot of fluffing the numbers with dynos lately. I am in no way saying that 10secapsttz did that, but don't get get your paties on up in a fuking bunch when someone questions something.
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There are no number fluffers here man.You think Im happy with 417 whp with a built motor???
One of the thing we wished we knew about was the waste gate springs APS ships the kit with. This one of the reasons you will see few APS kits blow motors, they dump boost after 10-12 psi due to the weak actuator springs.The guys like Tuan at GRD slightly modified their actuators to get the 12-13 psi they are seeing. The modification required removal of one turbo at my stage, I wish we knew this in the winter when the turbos were sitting on the table in front of us..Life would be easier for me.
I really have not seen anyone exagerating the numbers o n the APs kits for this reason. The thread you reffered to showed no fluffing of numbers. 440-450 whp is not uncommon with the APs kits(To the wheels by the way) tuned at 9-10 psi on a 10.3:1 compression stock motor. I personally have not seen any monsterous unbelievable numbers with the APs kit as of yet, not like every Greddy owner who claims 600 WHP..lol
Originally Posted by Gman2004
Don't take this personally but you APS guys need to get off your fuking high horses. The reason I referenced that thread is not because he had 445hp on 8.5psi, but because there seeems to be a lot of fluffing the numbers with dynos lately. I am in no way saying that 10secapsttz did that because the numbers are not unreasonable and easily doable, but don't get get your panties up in a fuking bunch when someone questions something.
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I think the answer to that is the same no matter what turbo it is.
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From: Santa Cruz, CA
Originally Posted by Gman2004
Don't take this personally but you APS guys need to get off your fuking high horses. The reason I referenced that thread is not because he had 445hp on 8.5psi, but because there seeems to be a lot of fluffing the numbers with dynos lately. I am in no way saying that 10secapsttz did that because the numbers are not unreasonable and easily doable, but don't get get your panties up in a fuking bunch when someone questions something.
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Adios amigo!
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From: South Saint Louis
Originally Posted by 10secapsttz
Well we finally got a chance to dyno the APS plenum on my APS TT Z.
Some history: Were running an APS Twin Turbo kit on a built bottom end with 8.5:1 compression and have maxed out the stock APS wastegate actuator springs at 10.5 psi . We did not know prior to install that the springs APS ships are only good for 10-12 psi. There is a way to get a few PSI more out of them but it requires dropping one of the turbos to make the adjustments so we will just wait for our upgraded selenoids to come in.We were originally tuned at Altered Atmosphere in MD, and were running a very conservative fuel map which put our A/F at about 10.0 @4000 rpms and leaning a bit to an 11.2 from 6500-7400rpms. With this map We made abut 383 whp and 340tq.
I recently upgraded from the Borla TD to the APS 2.5" exhaust and re-dyno'd without any tuning on a 98 degree, very humid day on a DIFFERENT dyno. On this run we realized 395 whp and 359 TQ without any modifications to the tune. Now since it was a different dyno I will not confirm anh HP or TQ gains but I will say the car felt faster and the turbos spooled up so much faster. But since I utilized a different dyno I can only assume on my HP gains. I would say it was safe to assume a 8-10 whp gain with the APS Exhaust over the Borla TD.
Now the fun part comes in. We bolted on an APS tallboy plenum without any modifications to the car or state of tune in similar weather conditions with all the adjustments calibrated to sea level on the exact same DYNO.
We dyno'd at 417 WHP and 362TQ compared to our last dyno of 395 WHP and 359 TQ. We also saw a slightly leaner A/F mixture of .2 to .4 of an A/F point throughout the A/F chart. Which only leads me to one conclusion...
The APS plenum WORKS and produced 23WHP and 3 TQ without ANY further tuning. I must say I was truely impressed and would love to see the gain on a car running higher boost levels and cams and head work. What I find amazing is that APS never once claimed any dyno gains or posted any numbers on their plenum. We were a bit sceptical and went into the DYNO run expecting maybe a few HP but to achieve 23WHP was amazing results. We feel we could pick up an additional 20 WHP by leaning out or rich A/F mixture to a flat 11.5
I will post up my DYNO graphs later when I get back to the shop to scan them.
Some history: Were running an APS Twin Turbo kit on a built bottom end with 8.5:1 compression and have maxed out the stock APS wastegate actuator springs at 10.5 psi . We did not know prior to install that the springs APS ships are only good for 10-12 psi. There is a way to get a few PSI more out of them but it requires dropping one of the turbos to make the adjustments so we will just wait for our upgraded selenoids to come in.We were originally tuned at Altered Atmosphere in MD, and were running a very conservative fuel map which put our A/F at about 10.0 @4000 rpms and leaning a bit to an 11.2 from 6500-7400rpms. With this map We made abut 383 whp and 340tq.
I recently upgraded from the Borla TD to the APS 2.5" exhaust and re-dyno'd without any tuning on a 98 degree, very humid day on a DIFFERENT dyno. On this run we realized 395 whp and 359 TQ without any modifications to the tune. Now since it was a different dyno I will not confirm anh HP or TQ gains but I will say the car felt faster and the turbos spooled up so much faster. But since I utilized a different dyno I can only assume on my HP gains. I would say it was safe to assume a 8-10 whp gain with the APS Exhaust over the Borla TD.
Now the fun part comes in. We bolted on an APS tallboy plenum without any modifications to the car or state of tune in similar weather conditions with all the adjustments calibrated to sea level on the exact same DYNO.
We dyno'd at 417 WHP and 362TQ compared to our last dyno of 395 WHP and 359 TQ. We also saw a slightly leaner A/F mixture of .2 to .4 of an A/F point throughout the A/F chart. Which only leads me to one conclusion...
The APS plenum WORKS and produced 23WHP and 3 TQ without ANY further tuning. I must say I was truely impressed and would love to see the gain on a car running higher boost levels and cams and head work. What I find amazing is that APS never once claimed any dyno gains or posted any numbers on their plenum. We were a bit sceptical and went into the DYNO run expecting maybe a few HP but to achieve 23WHP was amazing results. We feel we could pick up an additional 20 WHP by leaning out or rich A/F mixture to a flat 11.5
I will post up my DYNO graphs later when I get back to the shop to scan them.
I think he was talking to Gman. Nice numbers man, kill the attitude. I look forward to you being one of the first high hp APS TT's.
Originally Posted by 10secapsttz
I love mt APS TD, as for the HKS, cant really comment as we have not seen one yet.. 
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From: Sac
Originally Posted by 10secapsttz
Dude, Chill man...He was simply replying to your question.
There are no number fluffers here man.You think Im happy with 417 whp with a built motor???
One of the thing we wished we knew about was the waste gate springs APS ships the kit with. This one of the reasons you will see few APS kits blow motors, they dump boost after 10-12 psi due to the weak actuator springs.The guys like Tuan at GRD slightly modified their actuators to get the 12-13 psi they are seeing. The modification required removal of one turbo at my stage, I wish we knew this in the winter when the turbos were sitting on the table in front of us..Life would be easier for me.
I really have not seen anyone exagerating the numbers o n the APs kits for this reason. The thread you reffered to showed no fluffing of numbers. 440-450 whp is not uncommon with the APs kits(To the wheels by the way) tuned at 9-10 psi on a 10.3:1 compression stock motor. I personally have not seen any monsterous unbelievable numbers with the APs kit as of yet, not like every Greddy owner who claims 600 WHP..lol
There are no number fluffers here man.You think Im happy with 417 whp with a built motor???
One of the thing we wished we knew about was the waste gate springs APS ships the kit with. This one of the reasons you will see few APS kits blow motors, they dump boost after 10-12 psi due to the weak actuator springs.The guys like Tuan at GRD slightly modified their actuators to get the 12-13 psi they are seeing. The modification required removal of one turbo at my stage, I wish we knew this in the winter when the turbos were sitting on the table in front of us..Life would be easier for me.
I really have not seen anyone exagerating the numbers o n the APs kits for this reason. The thread you reffered to showed no fluffing of numbers. 440-450 whp is not uncommon with the APs kits(To the wheels by the way) tuned at 9-10 psi on a 10.3:1 compression stock motor. I personally have not seen any monsterous unbelievable numbers with the APs kit as of yet, not like every Greddy owner who claims 600 WHP..lol
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From: Albuquerque/NM
Let me repeat what we have stated since we played with the SSV prototype. TUNE FOR PLENUM! I don't care which you decide to install or what mods you have,tuning for addtional air induction is critical to maximum power from that component.
Perfect example is all that power we made out of the SSV after hours of dyno tuning.
Perfect example is all that power we made out of the SSV after hours of dyno tuning.
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