cold air needs to have an exhaust system?

[DaRkCotTon]

I'm sorry if this has already been asked, but i couldn't find ANYTHING to answer this question, please delete this if it already has and I'll search harder. Well, i was talking to one of my co-workers, and he said that if i get a CAI, then i would also need to buy an exhuast system. His reasoning was that after awhile with only a CAI, the car's interior would start to smell like gasoline. Is this true?

 

[Nickd]

I'm sorry if this has already been asked, but i couldn't find ANYTHING to answer this question, please delete this if it already has and I'll search harder. Well, i was talking to one of my co-workers, and he said that if i get a CAI, then i would also need to buy an exhuast system. His reasoning was that after awhile with only a CAI, the car's interior would start to smell like gasoline. Is this true?

LOL thats not true at all!!!

 

[Nutari]

I'm sorry if this has already been asked, but i couldn't find ANYTHING to answer this question, please delete this if it already has and I'll search harder. Well, i was talking to one of my co-workers, and he said that if i get a CAI, then i would also need to buy an exhuast system. His reasoning was that after awhile with only a CAI, the car's interior would start to smell like gasoline. Is this true?

Please slap whoever told you this and call them a moron.

:bs:

 

[II-Savy]

lol
wtf, didn't you laugh right away when he said that?

 

[jeg0024]

lol, thats gay. It would help to have a better exhaust with a CAI, but has nothing to do with interior.

 

[DaRkCotTon]

i didn't think it was true, but i wasn't too sure..im just starting to understand how all these things work so yeaa.....im embarrassed now >_<

 

[jeg0024]

i didn't think it was true, but i wasn't too sure..im just starting to understand how all these things work so yeaa.....im embarrassed now >_<

you shouldnt be embarrased, you should go slap that guy and make him embarrassed lol.

 

[Foolish]

Kick your co-worker in the beanbags.

Or, ask for a reasonable explaination of why that would cause a gas smell in the car. When it becomes apparent that he's making it up ('cause he is) laugh so hard at him and for so long that he feels like he's been kicked in the beanbags.

That is all.

 

[jeg0024]

yeah, we need an explaination for that lol

 

[Mocoso]

Now I hadnt heard that one before... thats a good one...

Im new to turbo engines and really cant tell you how they behave with cai and catback exhausts but I can tell you how they behave on normally aspirated engines....

For your engine to produce peak power it needs proper breathing both in and out of the engine.. the more fuel/air mixture you can pack into and out of the cylinder the more power you will get - in order to get more fuel/air mixture you need to get sufficient air INTO the engine and in turn you need to properly vent the spent gases OUT of the engine. Also, the colder the air the denser the air which means more fuel/air mixture.... if you suck hot air into the engine you wont get as much fuel/air mixture into the cylinder and hence wont produce as much power.... the CAI (Cold air intakes) all try to a) reduce restrictions that prevent air from coming in and b) suck air in from "colder" regions of the engine compartment. A and B combined give you more and denser air which in turn give you more power.

On the OUT of the engine it is the job of the exhaust system (headers,cat,catback) to do two things: a) create sufficient back pressure for the exhaust gases to efficiently be pulled out of the engine and b) reduce the noise and racket made by the engine doing both without significantly restricting the ability for the exhaust gases to escape the engine....most of us dont change headers and cats only the parts in back of the cat... exhaust pipes, tips, and muffler (catbacks) In general the quieter the exhaust the more restrictions there are... most aftermarket catbacks will reduce the amount of restriction at the expense of noise levels.... another item a lot of people dont take into account is that some aftermarket exhausts will also LOWER WEIGHT which sometimes can give you better performance than gaining 1 HP

In order to achieve MAXIMUM power improvements from either a CAI or an exhaust system they really should be balanced... i.e. you wont get any more power if you can suck in an elephants sized amount of air but can only fart an ants sized fart or viceversa...

Having said that it also doesnt mean you need to do BOTH in order to see any kind of improvement. Doing either will give you some improvements but the exhaust usually gives the bigger bang for the buck if you can get some weight savings with it. Be very very wary of anyone that claims huge amounts of power improvements with just a CAI and a CATBACK... it just aint going to happen ... not on a MS3 which has already been factory tuned....


Anyways I think the turbo engines dont really deviate from above...and for those purists and nitpickers out there.. yes Im sure you will find technicalities with my explanation but cut me some slack... I deal with electronics not gears

 

[jeg0024]

This would cause your interior to smell like fuel...or exhaust http://www.mazdas247.com/forum/showthread.php?p=2929824#post2929824

 

[Mocoso]

This would cause your interior to smell like fuel...or exhaust http://www.mazdas247.com/forum/showthread.php?p=2929824#post2929824

Did you see it was an automatic!!!!

 

[jeg0024]

Yeah, crazy stuff lol.

But as for as the intake thing goes, I agree with the above post. I had installed an OBX header and axleback exhaust and with my stock airbox and k&n drop in, I noticed some difference once I got my SRI isntalled. The engine runs smoother and the exhaust is a bit quieter, it doesnt seem like its gasping for air anymore But also the other way around, the CAI needs to be backed up with a good exhaust system to be fully effecient.