| Push Rod |
Jul 12, 2003 12:58 AM |
Re:Which is the best box? Edge Comp/TST Comp/Blue Chip
On a bone stock truck, each of the boxes will perform about equal, as far as peak HP gains go. We have noticed that the Edge Comp will sometimes beat out the TST/Blue Chip boxes on Dynojet and other intertial dynos (non-loading dynos) as the Edge box watched the TPS signal as well as boost to determine fueling levels. The TST/BC boxes rely on rising boost levels to determine fueling levels. If the dyno can't load the truck properly, neither box will fuel to their full extent. On the street, we've found that the TST box had a better bottom end power, and the TST Competition box has no rival as far as peak power gains go, at least when mounted in a truck with stock or mild (100 HP and under) injectors and good quick-spooling turbo.<br><br>On trucks with large, slow-spooling turbos, the TST or BC boxes won't really work all that well at cruise levels, as the big single may not generate enough low RPM boost to allow them to function. In some circumstances, we've found that the boost will be just enough to have the boxes turn on and off (surge) while cruising. We're working with TST on a couple big single turbo trucks to see if we can help develop a new program to prevent surging. Once the turbo spools though, the TST provides a very hard hit.<br><br>And we haven't had a chance to play with a twinned truck with big injectors yet to see how the TST box will fare against the Edge box. I strongly suspect that we will again see the TST box shine on loading dynos, and the Edge will likely be out in front on inertials.<br><br>As far as features go, the TST box has the same built-in gauges as the BC box, and the same automatic defueling levels. The BC box does have better configurability vis-a-vis selecting the power levels and low boost fueling adjustments, however we found that the Edge box gave us plenty of adjustment levels and TST's graduated response also works very well (as you bump up the power levels, the TST box gets more aggressive on the bottom end).<br><br>On the reliability side, for us, the TST box is definitely king (< 1% failure rate), with Blue Chip in the middle, and the Edge Comp coming in third. None of the three could be called unreliable, although the Edge Comp did have a bad run of LEDs for awhile. They seem to have gotten that issue cleared up though.<br><br>Rod
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