Cold air intake
 

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...

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

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...

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...

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.

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.

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!)

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

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.

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!

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.

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!

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

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

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.

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.

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

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.

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.

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 .

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.

I agree.. I sold it to you at less than 1/2 of what I paid for it. I'd never ever consider using anything like it in the future.

I highly recommend de snorking and at least doing the pedro intake upgrade. the sound is AWESOME!!! It HAS tripped the CEL 2 times now in about 1000 miles, both times it was the MAF. Could be a 14 year old cranky MAF or the intake, Regardless id suggest doing it, and dont do a full on CAI from all of my research I saw a dyno report that showed only 6 hp gain and 2.5 of that was on the desnork!

Every car we have desnorkeled has lost throttle response and mid range torque. Many times we have desnorkeled and then resnorkeled afterward.

If I want sound I just as 2-400ccs of displacement with a big bore solution and get the best of every world.

I've considered this . . . and now I think I have my answer. Jake is in the business of finding horsepower (by any means necessary, but supported by evidence). If he rejects the claim that CAI's produce results, then I suspect that there's a generous amount of the "placebo effect" (epidemic among Porschephiles) in the glowing claims that promote these mods. If these marvelous devices did actually provide significant benefit, he would not only tell you so (he has no stake in it), he would use them. How can anyone ignore the experience and measurement devices (evidence) being cited?

I am surprised your comment has not prompted more responses here after all the desnork hype!!

Okay I will bite..

How are you measuring throttle response....seems you would need a tp, rpm, plot. Do you have some graph to show us?

Maybe I should send you my short snork for testing...

I have three dynes in house. The majority of the past 15 years of my life has been spent belong their controls. nThat experience has taught me that a dyno isn't everything and I tune for what I feel is best along with what the plots state as a compound overview.

My Wife holds 4 Land Speed records in a 996, she set all 4 of them in one weekend after the car was .5 MPH too slow to set records in 3 of those 4 classes. I tuned the car so it performed best in relation to throttle response and torque and went with those settings even though the dyno showed a 6HP peak LOSS. On her first pass she shattered the record 3 times in a row. A dyno and a plot isn't everything.

I also have plots from my 28 channel race-technology DL2 data logger that shed a lot of klight on the desnorkel and even the CAI. Those ploits also are not everything.

I drive over 100 different cars a year on my 88 mile/day round trip commute. Time and time again I find holes in the powerband with the desnorkeled cars and I do not care for the modification at all. In my own Boxster I re-snorkeled and never went back.

All of what I state comes from direct experience; not parroted information.

Sounds like some good experience.....do you think anything other than the stock snorkel area would be sub optimum for throttle response? As I mentioned I cut mine (3/4 s up from the outboard end) and velocity stack shaped the lip to try and stab for the best of both worlds.

There are some alternatives, but for any engine with stock internals the factory snorkel is designed very well to optimize runner length.

Too many guys do the mod for a sound.. Thy lose a lot for that, just like they usually lose a lot for fashion purposes.

Recall that when Jake does an engine he goes back and forth from dyno to real world again and again. And yes he drives the car home and back over a very well learned road and if the real world doesn't reflect the dyno he'll tune it again until he gets the best balance...even factors in fuel consumption.

I know from talking to him several years ago how many experiments he went through just trying to learn the real world results of various exhaust mods, intake mods, tuning parameters, etc on various sized engines. He spent months on the project between tuning, dyno, track and his "home course" for dozens of iterations trying to find the right combination that wouldn't just look good on a dyno printout.

The lab is where I spend a lot of time.. And we built that lab ourselves to work in a very sensible manner. We built the shop and the labs with the same hands that build engines, you won't find anyone else that can say they did that!

I just finished a 6,788 mile trip (in only 8 days of driving) to Edmonton AB Canada testing the IMS Solution and my Gen3 engine combination on real roads and even traveled 107 miles of that on a dirt road through Montana- because we wanted to. That trip found us at every elevation between -400 to 12,000' and temperatures from 27F to over 90F. This took us through both the US and Canadian Rockies and through plains and the Columbia Ice fields.

The IMS Solution and the entire Gen3 engine performed slightly different in the real world than it did in the lab, but overall it exceeded our original projections for MPG, oil consumption and wear levels. We just finished disassembling the IMS Solution for evaluation and found ZERO wear, even after these hard miles and 5,200 continuous start cycles. The final testing in extreme cold will be carried out this winter in Illinois and I'll drive the car to Toronto to teach my winter class as well.

Its all about practical application. No other group in this industry understands their products as well as we do prior to releasing them. Period.

https://sphotos-b.xx.fbcdn.net/hphot...08633277_n.jpg

https://sphotos-a.xx.fbcdn.net/hphot...71402848_n.jpg

https://sphotos-b.xx.fbcdn.net/hphot...73903441_n.jpg

https://sphotos-b.xx.fbcdn.net/hphot...31956541_n.jpg

Hey Jake - good to see you have a decent plate on your mule, though your spelling of "wombat" is slightly askew ??
You must have an Aussie in your ancesteral background.......you're a lucky man if you do, theres not many of us left !!

The car belongs to Charles from LN Engineering.. His Wife has Aussie blood.

Hand print?
 

Jake I noticed in the last picture the random hand print on the driver side rear fender.....it looks like you left it while climbing out of the engine compartment!