Ahem. Here I go with my lil' speech. I won't be able t'give you as much information as Beau or Rich (505), but I'll give you my thoughts on what I know, and with what I've experienced.
First off, you're right -- unless you plan on boosting more than stock, the MAM FMIC kit isn't completely needed. However, if you EVER plan on doing some further upgrades, the MAM would be a good investment. After all, what's the point on dropping the money now on a SMIC, when you just might spend more cash further down the line for a FMIC? Might as well get the FMIC now, and save yourself some money.
Also, the MAM isn't just the FMIC .. You also get the hardpipes, a short-ram intake, and an upgraded bypass valve. In reference to your second post, it's NOT a BOV .. It's a Boostsciences BPV, so you'll still be recirculating your air and not venting it off. It also completely replaces your stock BPV. I had it on my car for awhile before switching to my Greddy BOV -- and the Boostsciences definitely helped with the air flow. On a stock setup with an Injen intake (which I had on my MSP for a bit), while the Boostsciences BPV didn't completely kill the turkey, it did help to stifle it.
In regards to stalling with the MAM FMIC kit, my car was a crackpot and DID stall somewhat for reasons that we could never figure out. I did the installation with Kooldino, and also spoke on the phone with Beau and Rich. We were all relatively clueless, and NOBODY else ever encountered the issue. We did fix it, though .. and my car is now running fabulously.
Everything you need to install the MAM kit is provided in the kit itself. Core, couplers, piping, BPV, all of it. Really, the only thing required on your part is about a day for the installation, some patience for said install, and of course your tools.
Overall, the MAM kit has completely destroyed my heat soak (I never got any even during the summer), and has helped stabilize boost levels. And the addition of the SRI has also been beneficial .. No more having to bash around in that damn wheel well to clean or replace the air filter, and the filter for the SRI sits right below the vent in my CF hood. And of course, it's a great first step for any further engine modification.
.. Hope that helps!
