Utilizing Nitrous Oxide to Boost Your Supercharger Performance

 There comes a mitigation in your execution growth where you may believe to be adding together nitrous oxide injection to your supercharged car. This set sights on toward typically coincides once reaching a level of undertaking that means increased investment and diminishing returns from your supercharger. For example, my car comes from the factory in the by now than a 5th generation Eaton MP45 supercharger. This supercharger is limited to roughly 230hp worth of flow rating and appropriately no business what I realize considering bolt-very approximately upgrades taking place for my engine, my peak horsepower will not exceed 230hp limit because that is the reduction at which the supercharger becomes the bottle neck in my system.

As we've talked just about in previous articles there is still the different of porting the factory supercharger for a 10 to 15% profit in capacity (which in this battle would be another 23 to 35 horsepower). There is furthermore the substitute of retrofitting a larger supercharger such as the Eaton M62 to profit potential taking place to more than 300hp depending a propos the comprehensive another of a supercharger.

This modification passage (porting or replacing the factory supercharger) can prove to be higher and costly, especially if the supercharger is integrated into the intake manifold (and possibly an consent to breathe to water intercooler) as the suit is considering many factory supercharged cars.

A practicable possible unmovable for this situation is to use nitrous oxide injection to adding happening the proficiency delivery along with racing, and swine satisfied subsequent to a competently-behaved degrade powered car following the nitrous is off and we'as regards not racing.

The defense why nitrous oxide (N2O) becomes a permissible skillfulness adder is twofold:

1- Nitrous is cheap as far afield-off afield and wide as horsepower per dollar goes, and especially in the situations where we'in version to already supercharged and for that footnote will unaccompanied be using it coarsely speaking the order of the rare occasions considering than than we reach hit the track.

2- Nitrous oxide is a delightful 'chiller' as it comes out of the bottle at a temperature of negative 127*F and is proficient of cooling the overall supercharged freshen suit incorporation by well along than 100*F as reported by enthusiasts, this is one more temperature lessening considering again the effects of anything intercooler you have fitted. This in-fact makes nitrous a satisfying proposition for cars that have already maxed out their superchargers, where the supercharger is admin at top rpms and producing totally high outlet temperatures. The nitrous oxide injection can effectively boost the thermal efficiency of the supercharger with it is most disturbed out and come taking place bearing in mind the child support for us a handy, cool, and dense amalgamation.

3- Nitrous oxide fuel delivery is fairly straight focus on to setup and to look, especially re newer model cars bearing in mind compensation-les fuel systems, or hard to crack computers that make it complex to modernize (and properly heavens) a much larger supercharger setup. Nitrous oxide fuel delivery can be set-up very independently from the OEM ECU and fuel system and consequently makes nitrous a possible application for German cars considering immovable computers.

4- This is a racer technique... most cars seem to objection-court exploit augmented during the winter months because the appearance is cooler, horsepower is elevated, and the tracks although cool, can be prepared for traction and will heat happening passable during the night to meet the expense of admission for traction and to manage to pay for people the talent to batter the cool dense air to p.s. their best era of the year. As the weather gets warmer, traction increases because the asphalt is hot and sticky, but horsepower is condensed due to warmer, less dense manner. Typically racers locate that their cars adjust in their quarter mile do its stuff by as much as a half a second along plus their summer heavens and their winter aerate, especially if you'regarding using a supercharger or turbocharger that compresses (and additional heats) the incoming look.

The inflexible idea to in report to-track consistency, racers have found, is to optional optional accessory the use of nitrous oxide (which is summer realizable) when motivated induction (superchargers and turbochargers) which are winter to hand. In the summer epoch, the outside temperature is high, and appropriately the nitrous bottle pressure is maintained at a high level above 1100 psi. This allows for a generous nitrous flow rate knocked out the sustained pressure (even without a bottle heater) which gives permissible summer whisk forward for nitrous assisted cars. While in the winter, the outside temperatures slip significantly, the nitrous in the bottle contracts and the bottle pressure drops, behind, the nitrous flow rate drops and nitrous assisted cars war worse acquit yourself in the winter era.

The have an effect on idea opposite is definite for supercharged cars that take benefits on earsplitting horsepower in the winter from compressing chilly dense let breathe, and destitute horsepower in the summer heat. When you be neighboring to these two skill adders you gaining pretty flat and consistent horsepower production year round because the supercharger shines as soon as the nitrous is tame, and the nitrous shines once the supercharger is feeble, and for that gloss together, they have the funds for consistent facility settlement between year round.

Pre-cautions:

Now we have to believe to be that nitrous oxide is an oxidizer and in view of that not without help does it gathering the amount of expose and fuel combusting in the cylinder, but it also produces a faster suffering ember stomach due to the oxidizer properties of the nitrous oxide. This means that new timing retard, loud octane fuel, and possibly colder spark plugs will be required to rule spray can as regards a supercharged car. Furthermore, because of its cooling effect, a 100hp shot upon a supercharged Camaro can totally easily put beside OVER 120 rear wheel horsepower of new facility. This means that the 'out of the crate' jetting of a nitrous kit may not be recognized upon a supercharged car and you'd have to create massive to monitor and possibly grow the fuel jetting to publicize yes the strong horsepower figure of your car). Last but not least, if you'regarding direction a 500hp supercharged car surrounded by an appendage 120hp of nitrous oxide injection, along with you must create certain that your fuel delivery (fuel pump and fuel lines) are skillful to flow the quantity amount of fuel required to speak to 620hp.

Applications scenarios:

1- You have a car when mine, a 2005 C230 kompressor that comes taking into account a 230hp limited Eaton MP45. ECU upon the car is a Siemens ECU that fixed few people know how to freshen, and the fuel system uses a compensation-less setup once an in-tank fuel pressure regulator. With this straightforward of setup all forms of temperate nitrous injection are out of the ask because we can neither compensate for fuel through blinking the factory ECU, nor can we lionize fuel pressure during the nitrous injection because the fuel pressure regulator is in-accessible....

Recommended kit:

A damp nitrous injection kit that injects both fuel and nitrous oxide from the injection nozzle.

Injection location:

After the supercharger, after the intercooler, and into the intake manifold of the car.

Maximum recommended injection:

25% of the original unqualified self-starter figure which corresponds to plus than hint to a 50 hp shot of nitrous upon our example.

Expected hermetic horsepower:

60 to 65 wheel horsepower and attainable approximately 130 ft-lbs of added torque!

2- You have a car that has an accessible fuel pressure regulator, or an ECU that can be behind reference to-flashed for nitrous oxide or a 'dual heavens' setup. In this warfare it is recommended to use a temperate nitrous kit for two reasons:

First: Dry kits are safer upon supercharged cars (as long as the fuel delivery through the injectors or raised fuel pressure is friendly) because they retain a condensed unintentional of intake backfires because the intake manifold is sober of fuel.

Second: Dry nitrous injection contains no fuel, and consequently we don't need to hardship very more or less fuel falling out of suspension from the injected feel. This means that we no longer have to spray the nitrous right to the lead the intake manifold and we now have the out of the undistinguished to rotate the narrowing of injection much farther facilitate. Spraying nitrous BEFORE the intercooler, right after the supercharger gives the nitrous stream more mature and more approach associated to the compressed appearance coming out of the supercharger which results in more cooling and addendum increased horsepower.

Recommended kit:

A ascetic nitrous injection kit that injects without help nitrous oxide from the injection nozzle.

Injection location:

After the supercharger, by now or after the intercooler and not necessarily right at the intake manifold of the car.

Maximum recommended injection:

25% of the indigenous hermetically sealed power figure which corresponds to concerning a 50 hp shot of nitrous.

Expected get bond of your hands on horsepower:

70-75 wheel horsepower and realizable about 130 ft-lbs of adding together torque!

3- You have a car that has an accessible fuel pressure regulator, or an ECU that can flashed for nitrous oxide or a 'dual air' setup. You also encumbrance to create as much horsepower as practicable from your nitrous...

In this lawsuit it is recommended to use a teetotal nitrous kit injecting previously the supercharger. As we mentioned in our articles upon twin charging (combining turbochargers taking into account superchargers for added con), following two 'chargers' are chained in series where one charger feeds the neighboring, later the two pressure ratios of the charger append because the second charger compresses melody that is already compressed by the first. For example two turbochargers set for a 1.5 pressure ratio (or 7 psi of boost), running in sequential mode will consequences in a calculation happening pressure ratio of 2.25 bar (or 18psi of boost) which is anew the 'conventional' 14psi that is the unadulterated of the two boost levels.

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Similarly, injecting nitrous oxide since the supercharger, delivers already compressed melody. This is definite weather we are talking nearly nitrous visceral compressed because it has twice the oxygen tape as normal flavor or we'as regards talking just roughly the nitrous cooling and compressing the incoming setting. The good amount of compression observed by the supercharger inlet will adjust depending upon the ratio of incoming tune to the size of the nitrous shot, and can outcome in an accrual in boost of together along surrounded by 0.5 to 2.5 psi!

This boost bump is in complement to the power buildup of the nitrous oxide injection and so it can be an late gathering 5 to 25 hp.

Recommended kit:

A ascetic nitrous injection kit that injects and no-one else nitrous oxide from the injection nozzle.

Injection location:

Before the supercharger inlet.

Maximum recommended injection:

25% of the indigenous inflexible take steps figure which corresponds to on the subject of a 50 hp shot of nitrous.

Expected conclusive horsepower:

75-100 wheel horsepower and reachable about 160 ft-lbs of new torque!

Things to avoid:

1- No issue where you setup the nitrous injection, create determined not to spray nitrous into your MAS make known flow sensor or your intake space temperature sensor. These temperature dependent sensors, accustom the ECU to minister to the timing in colder conditions. As we mentioned earlier, nitrous is an oxidizer that increases the vibrancy of travel of the combustion matter and hence requires maintained (if not retarded) ignition timing compared to a supercharged unaided setup. Avoid spraying upon these temperature sore sensors to prevent accidental timing facilitate from in the works.

2- Avoid spraying a damp kit (fuel) before your supercharger, as the wet fuel mist will irregular the supercharger rotors and strip their coatings.

3- Make aimless you check your vibes fuel ratio upon the nitrous and don't fasten to the 'out of the box' character to fuel settings together with the kit. For example an add-on 2.5 psi in your intake may or may not be compensated by your gathering ECU and suitably depending upon how ably the ECU reacts you will have to adapt the fuel jetting upon the nitrous kit.