Notes
Removal of the front bumper is required to properly mount the new intake and filter system while removing the factory components. With the restrictive factory unit out of the way, the Fujita cold air was installed and tested on the dyno with pleasant results. From 3000rpm until redline, the intake responded with gains in both horsepower and torque. The largest gains were achieved from 4500rpm to redline, while 8hp and 7 lb-ft of torque were recorded at 5300rpm over baseline.
Dyno 3:Greddy DT(Dynamic Tune) ExhaustPEAKHP 158.2 / PEAKTQ 159.5
* Horsepower Gain
* 1500 to 3500 HP range: 3 to 7
* 3500 to 5500 HP range: 6 to 7
* 5500 to redline HP range: 10 to 8
* Torque Gain
* 1500 to 3500 TQ range: 5 to 9
* 3500 to 5500 TQ range: 5 to 6
* 5500 to redline TQ range: 7 to 8
Pros
Designed as an economical and versatile alternative to GReddy's cat-back exhaust line, the new Dynamic Tune Muffler (DT-Muffler) series brings new options to performance axle-back exhaust systems. This full stainless steel, one-piece system bolts on to OEM or factory position piping and then divides into dual inlets on Greddy's straight-through muffler. Exiting the oval muffler are the unique angled round tips, measuring 80 and 42mm. The smaller tip can be capped to allow for sound and flow adjustments. This can change the tone and drivability throughout the operating range.
Cons
There's really not much to complain about the GReddy DT-exhaust system. The only issue we could see developing with the system is with someone who is careless enough to mistakenly push the cap for the 42mm outlet and have no way of pulling the system out. Then again, if you're dumb enough to pull that off, then you probably shouldn't even be driving on the streets.
Parts
Exhaust, doughnut flange, bolts, silencer, instructions.
Tools
14mm socket, 14mm open ended wrench, ratchet, extension and WD-40.
Installation Time
120 minutes
Notes
A quick removal of two spring loaded 14mm bolts, three rubber exhaust hangers, and the stock exhaust system was quickly replaced with the new GReddy DT exhaust. With the vehicle strapped to the dyno, we found the new DT-exhaust system to unleash some impressive numbers at the higher rpm range with the largest gains recorded at 10hp and 9 lb-ft of torque. We did encounter a small glitch in the vehicles performance when testing at 5500 to 5700rpm as the horsepower and torque numbers dipped. Using bolt-on products with any newer vehicle, it's important to maintain a proper A/F ratio as we noticed the vehicles ECU was a bit touchy in attempting to compensate for the new products. Companies such as A'PEXi, with their new Neo, or Power Enterprise, and their Cam Con, are just a few managements that can help in fine tuning your vehicles air/fuel ratio.