100plus

Hi guys,

Got my Fabspeed Maxflow mufflers installed and it drones pretty bad through certain rpms ... Was wondering if wrapping the exhuast remove some of the drone?

Cheers

gota911

I don't know for certain, but my guess would be no, wrapping the exhaust will not eliminate the drone.

Fabspeed huh? Check out this thread ==> Fabspeed Sadness

BruceP

No, because the sound is coming from the tailpipes, not resonating somehow off the cans.

ivangene

hard to drive with drone, I had by-pass pipes for a week....

here is a pic of what it felt like

nick49

Wrapping will not affect the sound at all, it will, however, give you what is preceived to be an "old school" look. In reality, header wrap was thought to be rather ugly and unsightly back in the day, and mainly used only on car headers the first foot or so to keep heat loss to a minimum. And then usually only on non-street legal drag race cars.

100plus

hahaha. Darn! Any other ways of at least Reducing some drone ?

Cheers

Ray S

Get PSE. Great sound, no drone.

bkjwhipple

old people..... sigh..... ;-)

100plus

I doubt that will ever happen! hahaha. Too expensive plus i just changed my mufflers I can live with drone but it would be great to just reduce it! haha

Sneaky Pete

100plus-

Love the mods you are doing but I gotta tell you man........please stop typing 'hahahaha'. It reminds me of Arnold from Happy Days. Keep the mods coming

100plus

No more "hahaha" More mods gonna come soon! Should i do an CAI in a tropical climate?

gota911

IMO, CAIs are not worth the effort, cost, and potential damage to the MAF.

IMO, you will get very little (if any) HP gains. You certainly will not get the 15+ to 20+ that some manufacturers claim. It may air intake sound different (louder) which will make you think it adds HP.

If you oil the filter too much , plan on replacing your MAF later because the excess oil will kill it. Also, the air filters are usually a more course weave, which will allow more air to pass through. Unfortunately it also allows larger air born particles to pass through them and get ingested by your engine.

Others here may disagree with me, and that is OK because like most topics posted here, there are differing opinions. To sum it up, I wouldn't put a CAI on my Honda, let alone on a Porsche.

100plus

[QUOTE=gota911;8160113]IMO, CAIs are not worth the effort, cost, and potential damage to the MAF.

IMO, you will get very little (if any) HP gains. You certainly will not get the 15+ to 20+ that some manufacturers claim. It may air intake sound different (louder) which will make you think it adds HP.

If you oil the filter too much , plan on replacing your MAF later because the excess oil will kill it. Also, the air filters are usually a more course weave, which will allow more air to pass through. Unfortunately it also allows larger air born particles to pass through them and get ingested by your engine.

Others here may disagree with me, and that is OK because like most topics posted here, there are differing opinions. To sum it up, I wouldn't put a CAI on my Honda, let alone on a Porsche.[/QUOTE

Then would you say just keeping the Original airbox and changing the air filter to a high flow one?

BruceP

I don't have much "opinion" to offer, but I do have a few facts. I've had the EVO CAI on my car for a few years now. Here's the good, bad and ugly:

Regarding filtration, this has not been an issue. I do oil analysis on my car periodically, and have never found any induction related impurities. If I lived in Dubai, I might be concerned about particulate filtration more than I am, but for a life on relatively dust free pavement, I can offer no evidence that this concern is valid.

Regarding your MAFS, I can tell you that I have had to replace mine. What I can't tell you for sure is why. My indie says that this is a periodic service item on this engine and wouldn't blame it on the CAI. I don't know. It's a coin toss, and I've chosen to accept the risk.

Regarding power gains, there is no question that a CAI can contribute to increased engine output. The OE piece is compromised to meet German drive-by noise regulations, and Porsche itself has been known to redesign the CAI for sports purposes cars. But there are a couple of catches: The first is that you need to be willing to make parallel changes to your exhaust system and invest in a remapped ECU to capitalize on the CAI. The second is cost. If you're a guy who wants "the number", wants a quantifiable horsepower gain to brag about, you will find that CAI/exhaust/ECU flash offers a pretty brutal cost per horsepower proposition. Given that 10 or 15 peak hp might make no material difference in the real-world performance of your car, depending on where and how it occurs in the powerband, that's hard to justify.

That's the objective feedback. Here's the subjective: Mods like this change the experience of driving your car. More noise translates to more feedback and more involvement. The question you should ask yourself is whether that's what you want. Forget the numbers. If, for example, you mostly drove long distances at higher cruising speeds, you might regret a lot of noisy bolt-on mods. if, by contrast, your driving included more variety of speeds and terrain, then you will either absolutely love or absolutely hate anything that makes the car's operation more intrusive. Mods like this have to be about the fun, and that starts with figuring out what fun means to you.

nick49

To eliminate the drone, or reveb noise you hear at certain rpms at neutral or trailing throttle, a mechanical modification will have to be done. Additional baffeling or a sound absorbing material will have to be added internally. This would require cutting the system open, making some changes and welding it up again. This sort of thing is a trial and error process and can be time consuming and expensive. Not practical for the average individual.