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SVT Shelby GT500
2010 GT500 Twin Turbo-Magazine Coverage
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<blockquote data-quote="GarageLogic" data-source="post: 9088878" data-attributes="member: 32405"><p>Okay, here's the deal on why we have not posted any numbers yet.</p><p></p><p>The car was put on the dyno after the kit was installed and we made a couple of pulls. The results were, if I recall correctly, ~608rwhp/675rwtq with super conservative timing and A/F values. After making those pulls and looking at the data, it was determined that 1)The downstream temps were higher than we wanted and 2) we were unable to hold boost for some reason between 5000 and 6200rpm.</p><p></p><p>Since this was the first Hellion TT GT500 Dynospeed had done, we wanted to err on the side of caution. After speaking with John at Hellion, we identified some issues that we needed to address and moved forward. </p><p></p><p>The reason for the high IAT2 was my own fault, as I had elected to install the kit sans Hellion's optional intercooler. Additional cooling capacity needed to be in place before we could get serious with the tuning process. The boost drop-off was a result of having no kind of boost controller on the car. Again, John suggests having one for the kit in order to manage the wastegate operation, but I had elected to forego the unit. Again, that's what I get for trying to do things my way.</p><p></p><p>Unfortunately, we could not get the parts delivered, on the car and dynoed before the magazine submission deadline, so we had nothing but untuned numbers to use.</p><p></p><p>So, if you want/need a number, then what I posted above will have to do for now. If you can wait a couple of more days, I'm sure we can provide something that is more in line with what others have gotten from the kit.</p></blockquote><p></p>
[QUOTE="GarageLogic, post: 9088878, member: 32405"] Okay, here's the deal on why we have not posted any numbers yet. The car was put on the dyno after the kit was installed and we made a couple of pulls. The results were, if I recall correctly, ~608rwhp/675rwtq with super conservative timing and A/F values. After making those pulls and looking at the data, it was determined that 1)The downstream temps were higher than we wanted and 2) we were unable to hold boost for some reason between 5000 and 6200rpm. Since this was the first Hellion TT GT500 Dynospeed had done, we wanted to err on the side of caution. After speaking with John at Hellion, we identified some issues that we needed to address and moved forward. The reason for the high IAT2 was my own fault, as I had elected to install the kit sans Hellion's optional intercooler. Additional cooling capacity needed to be in place before we could get serious with the tuning process. The boost drop-off was a result of having no kind of boost controller on the car. Again, John suggests having one for the kit in order to manage the wastegate operation, but I had elected to forego the unit. Again, that's what I get for trying to do things my way. Unfortunately, we could not get the parts delivered, on the car and dynoed before the magazine submission deadline, so we had nothing but untuned numbers to use. So, if you want/need a number, then what I posted above will have to do for now. If you can wait a couple of more days, I'm sure we can provide something that is more in line with what others have gotten from the kit. [/QUOTE]
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2010 GT500 Twin Turbo-Magazine Coverage
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