Cold air intake

[trimer]

Does a cold air intake do anything to mess up the ecu settings or has anyone had any issues throwing cels with one installed...becuase of the intake?

Just curious...

[JAAY]

Your stock is the best you can get or a 987 box. But to answer your question. It should be fine.

[shadrach74]

This mod I've never understood in this particular application. It seems to me that the stock intake is a cold air intake.

The other thing that I've never really understood is the desnorkal...it seems that is a conversion to a hot air intake...

[trimer]

Ive just heard a lot about them...so I was more curious. I can not imagine spending $600+ for a cold air intake for what they say is 3-4 more horsepwoer. Again - just more curious than anything...

[JAAY]

Especially in you climate stock is best. You can upgrade your intake piping but leave the stock box. Pedrosgarage.com has a good method to do this.

[Johnny Danger]

Originally Posted by trimer

Ive just heard a lot about them...so I was more curious. I can not imagine spending $600+ for a cold air intake for what they say is 3-4 more horsepwoer. Again - just more curious than anything...

First off, the intakes range between $300-$400 not $600. They do seem to be less restrictive than the oem set-up, and the "bark" that they produce at various rpm's is nothing short of ripping ! By the time you're done creating some DIY "chicken scratch" intake, the amount of effort and aggravation involved will probably surpass the cost of the after market part.

[j.fro]

Funny, no one's really answered your questions. If you install an aftermarket intake and filter, it's most likely that the filter is oiled. It is a known fact that an over-oiled filter can foul the mass air flow sensor, and this will cause the CEL. The Porsche ECU has no problem adjusting for any greater airflow gained by adding an aftermarket intake/filter. Yes, there can be an HP gain with a higher flowing filter/intake, but there are certainly things to consider.
Generally, HP gains made by swapping stock parts for aftermarket parts will cost you in street drivability/legality
...which is why I'm starting to show for a trailer (and possibly add another Porsche to the stable!)

[trimer]

Originally Posted by Johnny Danger

First off, the intakes range between $300-$400 not $600. They do seem to be less restrictive than the oem set-up, and the "bark" that they produce at various rpm's is nothing short of ripping ! By the time you're done creating some DIY "chicken scratch" intake, the amount of effort and aggravation involved will probably surpass the cost of the after market part.

600 installed is what I am hearing...part plus install.

[The Radium King]

the cai in the boxster is an oxymoron - the box already has a cold air intake (ps, even with snorkel removed, the intake remains sealed from hot engine air).

the aftermarket units don't seal and will draw hot engine air in, reducing performance as a result. further, a bit of research will show that vendors of cai's (evo, etc.) market the same unit for the 2.5, 2.7, 2.9 and 3.2 and use a common mass airflow sensor housing. strangely, the 2.5 and 3.2 have different maf housing diameters, so you start screwing with the ecu's ability to adapt at this point.

what you want to do is reduce restriction to air intake. cai's do this, but the cost and other side effects are not worth it. instead, remove your snorkle. change the pipe between your throttle body and air box. replace your airbox with a less restrictive airbox from a cayman/987. get a larger intake plenum and/or throttle body (997 unit, ipd, softronic). this will all reduce intake restrictions, keep the air cool, and not detrimentally affect intake tuning.

[tanque55]

My mistake, I looked up desnorkeling on the search. Doesn't really seem like it would add much to the overall performance. Not like it's a F1 machine!

[The Radium King]

well, your engine moves what, 1.6 liters of air per rotation in a 3.2 l engine? at redline that = 11,500 liters of air per minute. sucking all that air in through a 3" pipe (reduced to 2.7" at the throttle body, and even less at the snorkel) takes work, and any work the engine does to suck that air in is power lost to the wheels. any inefficiencies in this airflow have a proportional effect on performance. something as seemingly minor as the snorkel, or the resonance chambers on an intake tube, will increase engine effort which will reduce horsepower. note, on a 250 hp engine, a 1% loss = 2.5 hp.

[Jake Raby]

I have a brand new EVO unit that I'll take 150.00 for just to get it out of the store room. We never use these things, its been here since 2008!

[sgt brad]

Jake,
I will take it. I will call tomorrow, or feel free to call me. 256-874-1667

[Jake Raby]

Sold. Thanks for getting that thing out of my way!

[Nimbus117]

I bought and fitted one of these - EuroCupGT Highflow Induction Kit Boxster 986.

Porsche Boxster Performance 986 K&N Filter & Engine Induction | Air Ducts UK

They claim 10-20hp which I think is rubbish, does make a fab induction roar though. Got it off Ebay for £60.

[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.