Another GM MAFT thread Options

[KOU In3]

Ok, I'll be upfront that I'm just being a bit of a Devil's Advocate here. I like the MAFT and from what I hear, I'll probably end up owning one. I've plowed through most of the DSMtalk threads on it too. But, just to cause trouble I'll ask the following from those of you that have it.

Anyone have any concrete dyno numbers or even track numbers and actual gains from this mod? Before and after improvements?

I know the 3.5 in flows like the Mississipi in and of itself but when you neck down to the throttle body is all that flow lost and even disturbed by all the steps to get it to mate up? The 2G MAS looks to be pretty close to a 3" MAS flowing more or less straight through.

Although tuneable, can it match the increments of the SAFC in terms of fine tuning?

Granted, everyone who's bought one seems to love it. I'm just wondering if anyone's truly dialed it in on the Dyno and done a side by side with the 'old' SAFC 2G mas combo.

OK, flame suit is on. Time to endure the punishment of the translators.

[KOU In3]

[QUOTE=

Anymore brainbusters, Travis? j/k

Actually, yes. Here it is:

Using a dumped 02 housing. Initial boost onset should be the same since all the exhaust routes through the downpipe. But, once boost hits and the wastegate opens, then excess exhaust is vented driectly to the atmoshpere, bypassing the downpipe. This effectively makes your exhaust system function as if it has a bigger diameter piping as the full amount of exhaust does not have to travel through the system.

Now, given that adequate diameter piping (e.g 3" or even 3.5") is used, what is the benefit of a dumped 02 housing? No spool-up benefit. Possibly boost creep elimination. But does it free up any real power? Hoping for reference to dyno numbers again (note my current obsession there). If it does net a real increase doesn't this indicate instead that the exhaust tubing diameter is insufficeint to flow the exhaust gasses produced under boost and the dumped 02 serves as a band-aid for the problem?

Here's your 'brain-buster' Nate. Help a struggling nOOb out.