Which springs? - The yellow springs? (7.25psi)

Yes. The yellow springs.

The odd thing is that boost fell only about .5psi with just springs by 7k rpm. So it is puzzling as to why the EBC could not hold 11psi all the way through. I remember using too small of a housing on my 350z a long time ago, and the boost went from 7.5psi all the way to 4psi with just the springs.

I wonder how these EBC's are setup to work.

I'll have to check the response value that my EBC is set at. I might be able to smooth the boost out a bit on the high end by increasing it. But wouldn't know for sure without getting back on the dyno.

Meanwhile in Canada:

http://i137.photobucket.com/albums/q...psc273d9c2.jpg

http://i137.photobucket.com/albums/q...ps3ea59c51.jpg

http://i137.photobucket.com/albums/q...psa053ff0d.jpg

Things are moving along very well, and it is much better making this many at once. It is a bit repetitive, but that is just the way it is.

Nice work Sasha! Very good of you to post production pics to soothe the rabid anticipation of the next group of twin scroll junkies....

So, I just spent some time on the phone with Vince.

To sum it up, the boost is nothing to worry about. The car (as you can see by the HP curve) continued to make more power with the higher boost (+50whp over spring pressure run), even though it looks like it is tapering off.

There are many variable at play (including VVEL, and the dyno MAP sensor), and since the car already made very good power, there was no need to spend a lot of time with the EBC setting to try and flatten out the boost curve. It also takes extra time to really dial in an extra few psi (small increments over base pressure) of boost with the EBC like we are trying to do here.

Vince felt like the kit performed very well and made power with ease.

Here is a better looking dyno graph as well:

http://farm9.staticflickr.com/8545/8...6d8eef27_b.jpg

I've been reading on this thread alllll night long and have a few questions.. I've been reading that a thermostatic sandwich plate is nice to have for an oil cooler, is the one you provide with the kit thermostatic? I'm guessing it would be the plate with the filter on it that would need the thermostat and not the plate where the oem filter goes correct?

The plate can be added to the system. I have had one customer do this. The filter plate is just that, nothing else.

pm'd you.

-Ray

As I am finishing up the next round of kits, I thought I should update this a bit as well. As always, I listen to what my customers provide to me as feedback. There was a couple of minor things that came up during an install. Perhaps others had the same issue, but didn't bother letting me know. Anyway...here are a few small improvements:

The end of the down pipe that mates up to the turbo has been improved to completely eliminate the chance of exhaust leaks, and give the driver a false A/F reading.

The turbo outlet is bevelled:

http://i137.photobucket.com/albums/q...ps1637b46c.jpg

and the 3" pipe now sticks out past the V-band flange, and actually slides slightly in to the turbine outlet:

http://i137.photobucket.com/albums/q...psa4be7dd8.jpg

It is much more like a tongue/groove connection.

All the flanges are now welded on the inside vs. outside. This prevents any kind of warping of the flange, so the mating surface is perfectly flat:

(not a great picture):

http://i137.photobucket.com/albums/q...ps01101b21.jpg

A few small beads on the outside, and solid weld on the inside. The flanges remain perfectly flat:

http://i137.photobucket.com/albums/q...ps8b4cf3e6.jpg

3-bolt header flanges are done the same way:

(note how the inside of the tubing looks welded as well, this is due to purging each manifold with argon during the welding process. This is like welding the tubing from both the inside and outside, producing a very strong, durable weld)

http://i137.photobucket.com/albums/q...psdf289aea.jpg

http://i137.photobucket.com/albums/q...ps257c30c1.jpg

Flange stays perfectly flat:

http://i137.photobucket.com/albums/q...psfdd2e4d4.jpg


QC is always important, so nothing leaves till it has been assembled, and all the flanges line up perfectly:


http://i137.photobucket.com/albums/q...ps690bede9.jpg


http://i137.photobucket.com/albums/q...psebad1340.jpg


The kit now also comes with a 30 row oil cooler.

That $hit belongs in an art museum

Nice improvements.

So what exhausts can be ran with this? It's not just the FI one is it? Or can one be slightly modified to work?

He can send you the rear y-pipe with extra pipe length so an exhaust shop can cut and weld flanges where needed.


*Edit, added Cell's photo-

This photo is from Cell's build thread. You can see what I'm talking about, the top pipe...

http://img.tapatalk.com/d/13/09/24/zebyqave.jpg