![]() ![]() This additional gain was from the increased efficiency at the slightly leaner AFR. While this should have only amounted to a gain of about 3.0 horsepower due to the increase in nitrous, the actual gain was on the order of 6.0 horsepower. To take advantage of this condition and optimize the system we replaced the nitrous jet with a “36” jet in place of the supplied “35” jet. Reviewing the AFRs revealed that the nitrous- oxide/fuel mixture was not only safe, but a bit on the rich side. With the juice flowing peak power jumped to 228.5whp while the torque value breached the “200whp” mark landing at 209.51 lb-ft. Power checked in about a half-horsepower higher with the plate installed. The FR-S spun the rollers again as we logged and monitored the changes in AFR. The plate system adds a small amount of volume to the plenum. After establishing the baseline, the plate was installed. Sniper kits come race ready, right out of the box with all necessary components, including a distinctive bright orange 10 lb bottle with the industry standard industrial valve, adjustable plate with 100-150HP jets, solenoids, plus all required lines, hoses, fittings, clamps and detailed instruction sheet to make installation simple.Without the plate installed, our Project FR-S produced 176.24 peak whp and 148.04 lb-ft of torque in its naturally aspirated state. However, you can get more than you expected in dyno tests conducted by Chevy High Performance magazine the Sniper system produced an extra 163 horsepower when installed on a 355 CID small block Chevy with torque increased by an astounding 195 lb/ft. The Sniper is a fully adjustable system that is designed to provide from 100-150 extra horsepower in popular 4 bbl square bore or spread bore applications. This system is a safe and reliable street/strip system that fits popular 4 bbl. The Sniper was developed to introduce enthusiasts to the use of nitrous at a very affordable price. The Sniper is the economical "entry-level" kit from NOS that simply blows away competitive kits. The engineers at NOS have hit a bullseye by designing the finest entry-level nitrous system available today with the NOS Sniper kit. ![]()
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