Apex'i N1 Exhaust - Import Tuner Magazine

Dyno 3A'pexi N1 Cat-BackExhaust System155.0 hp 157.0 tq

ProsThe A'PEXi unit is a great looking piece with its robotic tig-welding on the canister and tip. Sporting an N1-style canister and tip, the system features straight through muffler design and piping with the least amount of bends for better flow. It produces a very distinct tone when driving (it sounds like a colony of angry bees ready to kick your ass).

PartsStainless-steel muffler section, mild-steel piping, gaskets, miscellaneous hardware and stickers

2000 to 3500 HP range: -1 to 1	2000 to 3500 TQ range: -1 to 1
3500 to 5500 HP range: 0 to 2	3500 to 5500 TQ range: 0 to 1
5500 to redline HP range: 1 to 3	5500 to redline TQ range: 1 to 2
Peak HP 155.0	Peak TQ 157.0

ConsOn the dyno the A'PEXi unit did not perform as well as predicted. Our guess is the Spec V already comes equipped with an increased flow muffler compared to the SE-R. A muffler system might not be necessary on the Spec V, unless you just like the sound of an exhaust system.

Tools12- and 14mm wrench, 12- and 14mm socket, 3-inch extension and ratchet

Notesnone

installation time60 min

TempAir temp @ 69 degrees FahrenheitTemperatures difference from previous run: -1 degree Fahrenheit

Dyno 4DC Sports 4-2-1 Race Header165.0 hp 168.0 tq

ProsCan you say "performance?" This is one of the most potent headers we have tested. We saw gains of 10 peak hp and 11 lb-ft of peak torque. The Spec V now pulls viciously to redline instead of struggling. Surprisingly the header made the most power of the three add-ons, whereas it usually makes the least. It performed extremely well and shocked all of us with the numbers.

PartsTwo-piece ceramic-coated header, gaskets, hardware, license plate frame, stickers and instructions

2000 to 3500 HP range: 2 to 3	2000 to 3500 TQ range: 4 to 6
3500 to 5500 HP range: 4 to 9	3500 to 5500 TQ range: 7 to 11
5500 to redline HP range: 8 to 10	5500 to redline TQ range: 8 to 10
Peak HP 165.0	Peak TQ 168.0

CONCLUSION
	HP Level	HP+	TQ Level	TQ+
Baseline	148.0		157.0
1 TurboXS HPBC	155.0	7.0	159.0	2.0
2 Injen Super SES Exhaust	155.0	0.0	157.0	-2.0
3 Injen 3-inch Downpipe	165.0	10.0	168.0	11.0
Final	165.0	17.0	168.0	11.0

BANKROLL
1	AEM Cold Air Intake	$ 286.79
2	APEXi N1 Exhaust	$ 690.00
3	DC Sports Race Header	$ 528.75
MSRP Total		$1,505.54

ConsThe header's drawback is that it is a race header and there are no CARB E.O. numbers. If a porker pops you, you're history.

Tools10-, 12- and 14mm socket; ratchet; 10-, 12- and 14mm wrench; standard screwdriver; and WD-40

Notesnone

installation time75 min

TempAir temp @ 70 degrees FahrenheitTemperature difference from previous run: +1 degrees Fahrenheit

Sources

AEM/DC Sports(310) 484-2322

A'PEX Integration(714) 685-5700

ConclusionThe new Spec V is a worthy successor to the previous generation SE-R. When armed with simple bolt-ons the 2.5-liter engine really sings-especially when equipped with the race header from DC Sports.