Hey everyone,
I know there were a decent number of people interested in what my new Tork Tech kit would do, and I have the results after hitting the track and the dyno this weekend.
I would like to say something before I give the numbers. At the dyno, there were a couple of strange things going on with either the tune or the dyno that I was unable to figure out a likely cause for. When Tork Tech's tuner and I were communicating before he wrote my tune, I asked him for an especially conservative base tune with extra timing taken out, and I therefore need to ask for more information as to what the timing curve (and the rest of the tune) actually looks like.
As a result, I will not be posting the hp/torque curves YET. I will post them once I have found a potential cause for the issues OR if I am unsatisfied with Tork Tech's help.
With all that out of the way, here's the bottom line:
The dyno was a "DYNOmite" brand load-holding chassis dynomometer, which is similar to a Mustang dyno. The altitude was approximately 1300 feet. The run was corrected to SAE standards.
The car put down 387 rwhp @ 5800 rpm and 351 ft-lbs of torque from 3500 rpm (where I started the pull) to 6000 rpm (where I ended the pull). The AFR curve was the smoothest I have ever seen; it hovered right at 12.1/1, and fluctuated less than .13 throughout the relevant range. We hooked up a mechanical fuel pressure gauge to make sure it was getting enough fuel from the SVT Focus pump that comes with the kit (I have heard horror stories and wanted to be safe) and everything seemed to be okay with it. We also datalogged manifold air pressure, and the kit made 8 psi from the start and maxed out at 10 psi.
I think the torque is lower than it should be, especially down in the lower rpm range, and I think it's because of the extra timing I asked Tork Tech to pull out. There was also a strange issue up top where there was a significant hp and torque "dip" at around 5250 rpm. This is especially strange considering that it only did this in 3rd gear; when I made 2nd gear pulls it was clean all the way up to redline. Other cars exhibited similar behavior today on the same dyno, and the issue only showed up in a 1/1 ratio gear for them as well. I theorize that there might have been an issue with the dyno's water pump causing an incorrect / unexpected load change at that roller speed. The AFR does not fluctuate at ALL throughout the run except in the beginning of the pull when the ECU is transitioning from closed-loop to open-loop, so I can't figure out what kind of tuning issue would cause this dip without an associated change in AFR.
As for the dragstrip, I ran a 12.2 @ 113 mph with a 1.885 60' time. This was done on the same 275/35R18 Sumitomo HTRZ-IIs that I use all the time. I think the trap speed sounds awfully low for that ET. I'd also like to point out that this was at Beaver Springs Dragway, which is a high-altitude, notoriously slow, slightly uphill track. A stock New Edge 5-speed GT couldn't run faster than a 14.95, a Ram SRT-10 ran a couple of 14.0Xs, a Z06 ran a 12.5, an STi ran a 14.0, etc. I think I might be able to hit 11s if I take it to a faster track.
Anyway, sorry for the wall o' text. Overall, I'm happy with the horsepower, disappointed with the torque, yet ecstatic with the real-world performance. Please share any thoughts, comments, compliments, insults, etc, and I'd be more than happy to answer any questions or clarify anything.
EDIT: I forgot to mention that videos were taken of both the dragstrip runs and dyno pulls. I will post them as soon as they are made available to me.
I know there were a decent number of people interested in what my new Tork Tech kit would do, and I have the results after hitting the track and the dyno this weekend.
I would like to say something before I give the numbers. At the dyno, there were a couple of strange things going on with either the tune or the dyno that I was unable to figure out a likely cause for. When Tork Tech's tuner and I were communicating before he wrote my tune, I asked him for an especially conservative base tune with extra timing taken out, and I therefore need to ask for more information as to what the timing curve (and the rest of the tune) actually looks like.
As a result, I will not be posting the hp/torque curves YET. I will post them once I have found a potential cause for the issues OR if I am unsatisfied with Tork Tech's help.
With all that out of the way, here's the bottom line:
The dyno was a "DYNOmite" brand load-holding chassis dynomometer, which is similar to a Mustang dyno. The altitude was approximately 1300 feet. The run was corrected to SAE standards.
The car put down 387 rwhp @ 5800 rpm and 351 ft-lbs of torque from 3500 rpm (where I started the pull) to 6000 rpm (where I ended the pull). The AFR curve was the smoothest I have ever seen; it hovered right at 12.1/1, and fluctuated less than .13 throughout the relevant range. We hooked up a mechanical fuel pressure gauge to make sure it was getting enough fuel from the SVT Focus pump that comes with the kit (I have heard horror stories and wanted to be safe) and everything seemed to be okay with it. We also datalogged manifold air pressure, and the kit made 8 psi from the start and maxed out at 10 psi.
I think the torque is lower than it should be, especially down in the lower rpm range, and I think it's because of the extra timing I asked Tork Tech to pull out. There was also a strange issue up top where there was a significant hp and torque "dip" at around 5250 rpm. This is especially strange considering that it only did this in 3rd gear; when I made 2nd gear pulls it was clean all the way up to redline. Other cars exhibited similar behavior today on the same dyno, and the issue only showed up in a 1/1 ratio gear for them as well. I theorize that there might have been an issue with the dyno's water pump causing an incorrect / unexpected load change at that roller speed. The AFR does not fluctuate at ALL throughout the run except in the beginning of the pull when the ECU is transitioning from closed-loop to open-loop, so I can't figure out what kind of tuning issue would cause this dip without an associated change in AFR.
As for the dragstrip, I ran a 12.2 @ 113 mph with a 1.885 60' time. This was done on the same 275/35R18 Sumitomo HTRZ-IIs that I use all the time. I think the trap speed sounds awfully low for that ET. I'd also like to point out that this was at Beaver Springs Dragway, which is a high-altitude, notoriously slow, slightly uphill track. A stock New Edge 5-speed GT couldn't run faster than a 14.95, a Ram SRT-10 ran a couple of 14.0Xs, a Z06 ran a 12.5, an STi ran a 14.0, etc. I think I might be able to hit 11s if I take it to a faster track.
Anyway, sorry for the wall o' text. Overall, I'm happy with the horsepower, disappointed with the torque, yet ecstatic with the real-world performance. Please share any thoughts, comments, compliments, insults, etc, and I'd be more than happy to answer any questions or clarify anything.
EDIT: I forgot to mention that videos were taken of both the dragstrip runs and dyno pulls. I will post them as soon as they are made available to me.