Blown63

Hey,

I am getting Fluid motor union's Mid-section installed this week, they are currently fabricating it and I should be getting it installed later this week.
http://www.fluidmotorunion.com/archives/6207

Here is the link so you guys can see Performance gains,
http://www.fluidmotorunion.com/archives/4909

Really looking forward to seeing and hearing what this will sound like!

emericr

I have ordered the downpipes and X pipe from GT-pro and will install them this Saturday and dyno the before and after. I know both vendors advertise great gains but I will be happy if it gives me 10hp.
I know the sound is supposed to be a great improvement and that is the main reason why I am buying this and the fact that it is totally reversible and no cuts are involved.

aznkuja328

Are you guys going to compare the mid-section modification from different vendors? I am looking forward to seeing the results!

_AMG_

Given the placement of the "X", this thing is gonna make really good power.

Sincity

For a while there, things were so quiet from FMU that I thought they killed the project. They never updated their announcement thread.

Even Money

If u do a search here custom downpipes were done to little effect if I recall. X pipe doesn't do a whole lot either. You'll mostly likely get a LT header type loudness, minus the headers. The big bottleneck by far in the exhaust system is the stock log manifolds.

GHAZAN

closer to the block?

_AMG_

Yup.

emericr

This Saturday, I will dyno and post the result of the following:
-Stock car (Non P31)
-Car with downpipes and X pipe.
-Car with downpipes, X-pipe and custom tune.

AlexCim

subscribed

superlubricity

Be sure to make 3-4 passes for each stage. These cars take a few dyno pulls before they show peak results. Wait until you get some kind of consistency before moving to the next mod.

If you are dynoing on a dynojet, bring a USB Flash drive so you can get copies of the runfiles.

emericr

I will have a USB drive with me in case they are willing to share the run files.
I am not sure I can get 3-4 passes as the heat would be a factor and time may be a constraint. I will let Jerry run the show.

GHAZAN

back to back runs aren't a factor for these cars

OrientBlue3

Hope your X pipe fit better than mine did. Absolute nightmare is an understatement. I would never buy from GT Pro again.

GHAZAN

sorry to hear that, but i believe i told you so in the last FMU thread....

Even Money

Why not just get the LT headers? You'll have the noise level of headers, just about, but not the power.

emericr

Even money: I have listened to an car with MBH headers and that is not what I am looking for sound wise. I hope the downpipes do not mirror the MBH setup.
The other reason is that I was able to get a very very sweet deal on the downpipe and X pipe combo that I could not refuse.
Orientblue3: I hope the pipes will fit better. I will let every one know. Maybe it was just bad luck because there are other members that had no problems with GT-Pro's product.

CZ55

Hi Emeric, are you talking about the dyno day in Davie this weekend? I might come too.

emericr

Yes, that is the one. C u there then

Blown63

Here is a little update, http://www.fluidmotorunion.com/archives/6232

GHAZAN

so many 1 inch pieces can't they just bend a pipe and save time and cost

Blown63

Picking up my car in a couple hours, I will post pictures and videos a little later.

Sincity

It would have been easier and cheaper to use a new cross-brace ala MBH rather than fab extra pieces to clear the brace. Can't wait to see/hear your results.

FluidMotorUnion

Cheaper? Meh. Our price was set before we even started. Easier? Not really, as we had a tight timeline to work with and getting a new part shipped to us wasn't nearly as fast as fashioning a workaround.

Sorry to jack the thread for a post, but I figured I'd just post our info in a thread already dedicated to this midsection, so it's all in one place.

Here's your TLDR version: 32.4 horsepower gain at the wheels.

Now here's the longest version: http://www.fluidmotorunion.com/archives/6258

Here are some pics of the midsection:





Replaces: Midsection from header flanges up front to resonator in the rear. Deletes the cats and replaces them with a custom-designed x-pipe.

Sounds: Angrier. Throatier. Closer to letting the beast off its leash (more pops on throttle let-up [in the good way], a more raw tone overall). At idle, almost unnoticeable, same goes for sustained driving under 50 mph.

YouTube video:

http://www.youtube.com/watch?v=EtyA-rO-Jr0

Dyno chart:



Now before everybody jacks this thread to discuss the weird points of this dyno, allow me to address them:

-The power starts late because the interior was stripped so we couldn't manually keep it in third gear. Craig had to ease on the gas so the car wouldn't start taking matters into its own hands.

-The lines are jagged because the Merc's OBD port wasn't sending RPM information to the dyno as fast as other cars normally do. Since the Dyno was trying to read and interpret dyno information faster than the OBD port was giving it out, it kept making those jagged edges.

Rest assured, the OBD issue only affects the RPM count, as the HP and torque ratings are measured through the tractive force applied to the dyno rollers, so all the numbers you see are as accurate as possible. Dyno Dynamics always reads low after the new software update. Some shops call it "The Heartbreaker" for that reason.

I think I've covered just about everything. George loved it, but his words will mean much more than mine in that regard.

MBNiko

Unbelievable numbers.. What a great work of art you guys at FMU did.