Cold air intake

[mikefocke]

This always bugs me.

We have cold air induction on every Boxster from the factory. We take air into the engine from outside the hot engine compartment so the air is cooler/denser.

What you guys are talking about is a low-restriction air filter.

Of course with low restriction comes a downside, more and larger particles of dirt get into the engine. Seen two tests by independent test facilities.

Also I've had tuners with no axe to grind or $ to gain by selling me something tell me the stock air filter is just fine for about everything but a highly enlarged/modified/tracked motor.

[sgt brad]

ok, just to let everyone know, i plan on messing with the evo to try and see if i can come up with something like the canister style that is in the other thread. i figured "what the heck" for 150.00. my take on the whole thing is that there are indeed restrictions introduced in the factory box and piping. some are there probably to mitigate the boxster's encroachment on the 911 and others are there for sound abatement. either way the airflow, while cold, is circuitous. from what i can gather, jake has indicated that the intake and exhaust are the significant restrictions. the heads flow huge numbers if what i read is correct. therefore relieving the intake exhaust restrictions should help. i will certainly let everyone know how it works out, but expect it to sit in my shed for a while before i get to this project.

brad

[Nimbus117]

Originally Posted by mikefocke

This always bugs me.

We have cold air induction on every Boxster from the factory. We take air into the engine from outside the hot engine compartment so the air is cooler/denser.

What you guys are talking about is a low-restriction air filter.

Of course with low restriction comes a downside, more and larger particles of dirt get into the engine. Seen two tests by independent test facilities.

Also I've had tuners with no axe to grind or $ to gain by selling me something tell me the stock air filter is just fine for about everything but a highly enlarged/modified/tracked motor.

I still have the standard air filter in my system, only changed the intake pipe.

The Porsche offering has a muffler to cut down the induction roar, I replaced it with a straight through pipe as per my previous posting. It's a little larger diameter, aluminium instead of plastic and no restricting muffler arrangement.

Sounds good at full throttle.

[sgt brad]

Can someone fill me in on what exactly comes with the evo cai kit. just trying too make sure that I got everything. Thanks.

[Jake Raby]

Originally Posted by sgt brad

Can someone fill me in on what exactly comes with the evo cai kit. just trying too make sure that I got everything. Thanks.

Thats a full evo kit as they were provided in 2007 or so. Then the kit had an optional air filter, but now it comes with a K&N knock off. I'd use a real K&N cone filter and find the largest one that you can fit.

[Johnny Danger]

FYI, the last time I spoke with EVO, they indicated that the air filter for their intake was proprietary. I tend to believe them, because I couldn't find a replacement from K&N (or any other brand for that matter) that matched it in terms of dimensions .

[sgt brad]

Originally Posted by Jake Raby

Thats a full evo kit as they were provided in 2007 or so. Then the kit had an optional air filter, but now it comes with a K&N knock off. I'd use a real K&N cone filter and find the largest one that you can fit.

I figured out after I posted that the plugs were for the resonator tube. Was curious about the air filter. Didn't realize that I would have to purchase one. All of the pics I had seen showed a filter and there were no instructions, etc. I have to bee honest, at even 150.00 this kit seems a colossal waste of money. I can't imagine paying 3-400.00 for it retail.