YNOT600

A few teaser shots of our new C63 longtubes. This is our own C63 and we've been tweaking a test set for a CLS63 out in CA based on dimensions he's given us.
Anyway, these headers have 1 7/8" primaries with 3" high velocity merge collectors, your choice of high flow metallic substrate cats and/or off-road mids--swapping from catted to O/R is a ten minute job. The system is all 304/316 stainless comes with 02 extensions and has a lifetime warranty on everything included in the kit.
One you remove the plastic pan underneath and remove the OEM exhaust/manifolds install time is literally under 60 seconds per side. No dropping of the trans, or lifting the engine as is necessary with some other makes/models of vehicles.
Pics of the rest of the full race exhaust (3" X-pipe, resonators and mufflers) will be posted shortly and will be on for the MIR track rental on March 1st.
Paired with v3 tuning we expect to see 480-500rw SAE on 93 octane with the stock wheels/tires. We'll also do a 100 octane dyno post race (same tune, just higher quality fuel).
There will be plenty of HD videos & sound clips to go around from MIR with us bringing eight tuned vehicles: 3 C63s, E63, M5, and three cars tuned by MHP and built by TTM a M6, S63, and CLK 63 BS.






















The goal is 480-500rwhp SAE with our v3 ECU/TCU Tuning, our new full exhaust, carbon fiber airboxes/filters, and our 180 T-stat--stock longblock + intake, N/A.

We ran 11.59@119.75 with ~440rwhp/408rwtq SAE last time out. Track results coming March 1st. :beer:

Glock Guru

Nice stuff. So when does Evosport let Andy back on the board?

-Troy

MB_Forever

Those long tubes actually look pretty good Will you dyno before MIR or wait until after? Also, any idea on final price yet?

hooleyboy

Those look real good. I mean really *** good. My only question is, who does the collector bottle neck up a bit?

bobgodd

Can you elaborate on the collector design please?

I'm curious why it comes almost to a pinch, then flares back out again for the rest of the piping?

YNOT600

Pretty good? Initial GP price with cats shipped to your door (lower 48) $3950. Lifetime warranty on materails/workmanship on everything included. Optional ceramic coating, $350. We don't recommend it and feel it's a waste of $.

Thank you Hooley.

I think a lot of the difference in size is due to the pics, the bump to fit the mid pipes is to accomodate special 3" ID cats, the perceived "neckdown" is actually 3".
This was done for a reason. It's all about the design of the collectors.

One other thing, this is a preproduction set meaning the production pieces will look even better appearance wise.

Thank You
Tony

hooleyboy

Those are really some of the best looking longtubes i've seen in a while. TIG welds + mandrel bend pipe = Winning combo.

Tell You what. When half the forum takes a crap on MHP last week this is how you bounce back. great looking product.

would love to see what these headers gain over baseline.

bobgodd

If that pinch point is 3" then what size are the primaries, 2"? I'm not talking ish, as I think they are good looking headers, but I want to get a better understanding of why you guys chose that particular collector design.

mrtesting

Let us hear it!

AMGBeleza

They look great, I would love to hear it too.

AMGBeleza

Oh yeah, something I meant to ask Andy, but where are you guy located, and do you have alternate locations for work?

zzotte

The tubes looks great! You mentioned x-pipe, what would be the benefits if any to change over to x-pipe?

Thanks
Leo

AMGC60-3

Yeah what he said, when is Evosport letting Andy back on?

YNOT600

Primaries are 1 7/8", the collector "pinch points" are a tad under 3" (remeasured again today while I was at the shop sorry about what I posted last night), but that's what you see with all high velocity merge collectors. They key word being "velocity". Typically a .5" reduction to speed exhaust gas flow--a bit less in our case.
We went with this design as 1 7/8" primaries are the optimal diameter for a 6.2L engine with 40/33mm valves spinning to 7500rpm (post tune) with the type of flow we're seeing on the bench. Anyone that's worked with headers long enough will tell you the design of the collectors is much more important than equal length primaries. Equal length primaries show no gains (even then it's questionable) until past 700hp, more important is primary diameter, and most importantly the collectors.

Thank you hooleyboy, as Andy's said, we aren't going anywhere.

He was suspended for 30 days, not sure how much time he has left.

Plenty of HD vids/clips otw, come to MIR and you can hear it in person on March 1st.

Thank you!

Yes. We are based out of Columbus, OH and near Detroit, MI but have alternate specialty facilities in Edgewood, MD and near Cleveland for fabrication and install.

Well, what most people haven't yet discovered is that the factory "resonators" on a C63 are in fact just a mini H-pipe (that's why the stock exhaust sounds so "beefy"). The crossover pipe itself is actually .5" or less in dia meainging it's not doing much to equalize flow, but is there more for sound than anything. Bringing a true 3" X-pipe to our full race exhaust will add power and give a slightly more exotic tone to the exhaust.

Thank You
Tony

bobgodd

I absolutely agree, and all I had to do was a little research to find that out lol.

I'm curious to see numbers, I'm sure they'll make very good gains. And you're right the primary size is dead on for that engine.

Though I'm still sketchy on that collector, I haven't done enough studying to comment any further. Good luck with sales.

YNOT600

Thank you.

We did a lot of homework before and during the fabrication of these headers. Track results (plus HD video/audio) coming at MIR, then dyno results immediately after.

Multispeed

If this helps;
http://www.carcraft.com/techarticles...tem/index.html

cdd

Very interesting article. Thanks for posting.

bobgodd

Good read.

rarfinancial

Great find