Has anyone used or heard of this? Says increase of up to 50 hp. Looks and sounds much safer than nitrous injection. Tried searching and found nothing on this product.

http://www.overboost.com/obs/product..._id=1&sc_name=

 

go to nitrousexpress.com, there you can info on it.......i am considering it for my m2 large stockmount.....

 

I can't find any reference to this on thier website???

 

Adam Saruwatari used nitrous on his intercooler for his RX-7. I was thinking of doing the same thing to my GReddy front mount intercooler. I'm going to talk to Dave from KD Rotary about this on Tuesday while I'm at his shop.

 

It's here : http://www.nitrousexpress.com/new_products.htm

But it is the same text as overboost.

 

I am wondering how exactly do you mount it? I am gonna call Nitrous Express on Monday to see what they can tell me.

 

2hott, let me know what they say..........the only thing i would be afraid of is shooting a cold blast on a hot i/c...possibly cracking the core or something????

 

I will let ya know what I find out. I don't think that the nitrous would get shot onto the intercooler, but I will know tomorrow.

 

I am having a hard time believing the 50hp figure. I'm no expert on the subject, but here is why I'm not inclined to believe 50hp.

Keep in mind this is only what I read.........

I was reading HCI Vol 3 number 2 (yeah, I know HCI is 95% Hondas, it's not like I subscribed or anything), and they did an article about a Miata that they put a Kenne Bell supercharger on with a Lavonia air-to-water intercooler. There is an interesting "subarticle" after the actual article where they talk about lowering intake air temperatures. To sum it up, they said that lowering intake temps does NOT drastically increase HP. Before you jump on me for saying that, they meant AFTER it goes through the turbo/blower. The reasoning behind that is in order to see big HP gains more O2 molecules need to be brought in. Being cold can pack more in, but the thing is once they have gone through the turbo, it is a "closed system" so no matter how cold it gets you aren't burning any more O2 molecules than if you had an intake temp of say 25 degrees lower. They did dyno runs running different water temps through the intercooler and managed a 25 degree difference between them. Alas, they didn't see any power gain from the 25 degree colder intake temp.

Again, this is what I READ. Correct it if you think it is wrong! Also, if I was too confusing let me know and Ill try to clear it up a bit.

If there is enough interest I can scan the article so you can all see the article and the charts.

Sorry abou the long post.

 

I think the Nitrous is gonna cool it alot more than 25 degrees. But I will know more tomorrow.

 

i think the purpose of the ntercooler is to lower the charged air temperature so you can bump up the boost........ and i think thats where their 50hp claim comes from...... without increasing the boost and just lowering the temperature, i dont think its possible to increase by 50hp

 

Right. You can safely increase boost without temps getting too high. I doubt they are suggesting a boost increase while spraying nitrous on the intercooler, but I'm not familiar with this product so I guess we'll find out when 2 hott calls Nitrous Express tomorrow.

 

i have seen a cheaper system from spearco intercoolers......... but you actually spray water by the throdle body. and its supposed to lower the charge air temp also

 

Sounds like somebody was sleeping during physics and chemistry. What happens when a gas heats up or cools down? The gas as well as the molecules making up the gas(O2)expands and contracts. In a closed system this expansion and contraction will cause cause pressure to go up and down. Since we are talking about ic's, the cooling effect of the ic would cause the pressure to drop. Since our system measures pressure in our intake manifold, the turbo will continue boosting to maintain the preset boost setting. This increase in pressure will require more air, hence more O2 molecules.

Using the ideal gas law equation:

PV=NRT
P=pressure
V=volume
N=# of molecules
R=ideal gas law constant
T=temperature

Knowing that P&V remain the same, then for T to decrease then N has to increase. R will always remain the same.

I hope this helps.

 

Silver, beat me to it,

Yes as the Ic cools the incoming charge the air contracts and the volume decreases causing a pressure drop which will be sensed by the MAP sensor sending the signal to the computer to open (or close) the controlling valves for the wastegate so the turbos can pump in even more air into the IC to make up for the pressure drop.

Thus more air, more oxygen more power and without more fuel more boom.

Does that system spray externally on the IC, looks like it. but wouldn't it help more if it was internal?

 

I seem to remember some early post on this subject. Something being tossed around was the idea that some of the nitrous used for cooling the intercooler could possibly get sucked into the intakes. This could cause a lean condition while running under the maps. I recall the discussion talking about using an inert gas instead of nitrous therefore having no effect on combustion. I'm no expert just recall some interesting reading!

 

when i was down in houston for the supra meet not too long ago...a twin turbo vette got out of his car and just sprayed his intercoolers down stright from the bottle before he ran. works for me.

 

That did help. Thanks for the explanation!

 

That inert gas may not have any effect on combustion but it does have an effect on the # of O2 molecules per cubic inch. The purpose of dramatically cooling the intake air is to increase the amount of O2 going to the motor. If the inert gas gets sucked into the intakes it will diplace some of the air therefore reducing how much oxygen can get packed into the system. This may void all effects of using the gas to cool the intakes.

 

Ok called Nitrous Express today. The way it works is that the oblong tube with the solinoid on it has small holes drilled into it. The nitrous or CO2 (which is cheaper) when released by WOT switch or button hits the intercooler causeing it to super cool the intake charge. They have averaged gains of 35-50 hp w/ a max gain of 57 hp so far. These are on both stock vehicles and upgraded. No other changes were made to get HP gains. If you have any other questions or I missed something let me know.

 

Yeah where the hell and what size C02 bottle would you use? hehe 'Do you need a big bottle?, you know what... make that two of'em!' Anybody ever have a c02 powered bb gun? When you unscrew one of those suckers while it still has some pressure in it MAN IT GETS COLD so i believe the 50 hp figure.

Nick

 

Kit has a 5 lb bottle I would go to a 10 lb personally.

 

I can see your point and even agree with that. However I would rather run co2 and loose some effect then run Nitrous and get a lean condition. Maybe so little gas relative to the amount of air (under full boost) would get sucked up that it wouldn't really make a difference either way??? I was also thinking that if a person had a intake like an m2 cold air box that it wouldn't make a difference because all that air is coming from the outside anyhow. That's one way for me to justify blowing all that money on the m2 box.

 

I was thinking, If you used it on a FMIC then the gas would spray through the IC and then go on to help cool the rad. Sounds liek a good deal to me.

What do you guys think?

 

i always though N2O was bad for the apex seals like well, its harder on a rotary than it is on a cyl