Ok, I've been doing some reading and thinking for a long time now, and I have to ask some questions. I have heard of some people using dry ice in their intake air boxes for colder air. To me this makes sense, however, does it help? What about running a tube from an oxygen bottle and putting pressurized and pure oxygen into the intake...before the sensor of course. Any suggestions or slaps for such stupid ideas???

 

Pure oxygen + combustion engine = BOOM!!!

 

Well, I am just throwing some things out there... I'm sure if they worked they would be common. I just want to see what someone has to say. Why not? Cold Air... More oxygen......

 

Plus nitrogen = NOS?

 

Yeah... what about the dry ice question... Cold, dry?

 

not a bad idea but could you imagine all the smoke coming from under your hood when it starts to heat up.

 

Yeah, I guess that's a good point. I guess what I am getting at is does that colder air really help enough to consider something like that? What would pure oxygen do to the motor?

 

Cold air helps enough, traditionally, to warrent getting a cold air intake. Even the difference between the engine bay and the outside air helps. How much will probably vary per application. I haven't seen dynos on a real cold air intake on an '8 (though I have seen them in pictures), assuming a dyno would really show the full capability of the system. But, as it stands, after market intakes haven't done much for the '8.

As far as your second question, I have no real answer, except that O2 is highly explosive. According to howstuffworks.com (last time I read it) the nitrogen in NO2 acts as a dampener or cushion for the combustion of the O2. So, it might be pretty scary without it.

But if you put O2 in before the sensor, it would still mix down alot with the incoming air. So, I guess it depends on how the ECU would handle the extra O2, which I have no hard guesses about. It might throw more fuel. It might freak out. Never know 'til you try.

 

Well, I guess I wasn't wanting to give it a shot, but maybe a small steady breath while racing. Just some thoughts... I guess I will give it a shot and give you the do's and don'ts!

 

Cooler air is much better for combustion because it is more dense, in turn there is more air (oxygen) to burn. BUT, the A/F (air/fuel) mixture has it's limits. You can only mix so much oxygen with the amount of fuel coming out of the fuel injectors. Too much or extra oxygen molecules do nothing for combustion because the combustion process uses up all the oxygen it needs. In fact to much would result in a "lean" A/F mixture causing the engine to knock, etc. Pure oxygen by itself is much more likely to combust than regular air that is normally inducted into your engine. As for dry ice, i don't know how well that works, but check out http://www.designengineering.com/ they have engineered something like your talking about using CO2. I don't know if any of that made any sense but i tried.

 

Not long enough! :p

Dry ice = frozen carbon dioxide. Carbon dioxide is not combustible - when it thaws, carbon dioxide gas is released - that won't help your engine make more power at all. Around your airbox, not in your airbox - it would help a tiny bit. You would need to freeze an intercooler into a block of dry ice, then quickly install the intercooler and do your runs!

Pure oxygen - your engine would blow up. As mentioned, that's what nitrous oxide is for, introducing more oxygen into your engine, relatively safely. Straight air is 21% oxygen. Unless you recalibrate your ECU for mass air readings of a different composition or compensate with additional fuel some other way (a la nitrous kits with added fuel injectors), the engine would just run incredibly lean, if it ran at all, and detonation and overheating would be rapid and likely fatal to your engine.

Regards,
Gordon

 

Thanks guys... that's what I was looking for. That would produce far too much oxygen for the A/F mixture, I just wasn't sure what kind of % oxygen we were looking at normally. I guess the average guy wants more horsepower, but I'm a little nervous of nitrous. I don't want to blow anything up... therefore I was looking for a less drastic alternative

 

A 35 shot of nitrous i would think would be ok for the Renesis...search other nitrous posts

 

Ok, aside everything else... roughly how much benefit would I get from 40 degree intake air instead of 80-85?