Here are a few facts about our testing. The 2006 Mustang GT was run on pump gas, and while there was a Snow Performance kit plumbed into the intake tract, Dez turned it off for our tests. SCT software and a handheld tuner were used to tune this beast. Dez kept the timing consistent at 19 degrees and only had to fiddle with the tune to compensate for the Steeda charge motion delete plates. Boost remained largely the same on the Auto Meter gauge that was mounted on the A-pillar. Dez said it touched 15 psi on both runs at 6,500 rpm. It is not the most scientific way to track boost pressure, but he said if anything, the new intake might have scrubbed off a half of a psi. We also have to send a big thanks to Imperial Ford, a Ford Racing dealer, for helping us with a set of stock coil plugs.
Initial testing resulted in a misfire in the upper rpm range. On advice from Burcham, Dez swapped to a new set of OEM coil plugs and we retested the two intakes. The stock coil plugs helped the engine pull smoothly to 6,500 with both intakes.
When all was said and done, the gains in the torque and horsepower were impressive. The broader curves will make for a nice drop in e.t.'s at the track. The intake retails for $1,190.00, and while more expensive than some others on the market, the gains are plentiful for the cost-especially when you get in the 500- to 600-rwhp realm. Broad gains in torque and horsepower with a peak increase of 24 rwhp and 44 lb-ft of torque is quite impressive.