dude I have my money in hand right now if this makes good power and SOUNDS SICK!

I mean seriously LOL! :happydance:

Updates...car made 411 at 4700rpms...and then a throttle body took a crap. We are trouble shooting now. Think we may have figured it out...if my phone doesn't die, I'll update y'all in a bit.

We are testing both mafs right now.

tow it to the nearest Nissan dealership, I think you're still under warranty. :ugh2:

Mafs are good!

:tup:

We need a Live Shop Feed. LOL

Problems solved, 428whp @ 4.8psi, boost going up as we speak!

Beast!!!

Guys i gotta hit the gym, ill have vids and pics up in T minus 1 hour.

Ryan

Get your swoll on.

I get my workout in bed. The lady is a freak

:tup: Same here. Probabaly cause I'm not married yet.

My wife and I have freaky sex, you just need to find the right woman! :tiphat:

There is no time for the gym, only time to post videos! I can't wait to see and hear this beast run.

Here's a vid from my iPhone

http://s19.photobucket.com/albums/b1...t=3a847cd2.mp4

more to come

Here's the 4.8psi graph

http://i19.photobucket.com/albums/b1...t/7d6fe83e.jpg

I just noticed the dotted line is the stated numbers, hp looks about 10-15 higher, closer to 440ish and tq is up near 400

hmm, interesting.

That thing sounds pretty nasty! No blow off? Or are you on bypass? That's good power for 4.8psi

good job!!!!!!

First, I want to give a HUGE thanks to Shawn for his fabrication skills and S&R Performance for helping us with the tuning and diagnosing the initial problem. Shawn and the guys at S&R stayed until around 9pm when the car was finally taken off the dyno. They all went above and beyond what's expected of them. I also want to thank Jayson (jnaut), Raul (RCZ), and Sam @ GTM for answering my questions and throwing ideas off of them.

What a friggin day! Got the car on the dyno around 5pm at S&R Performance. After the very first pull, the car maxed out the driver's side MAF sensor and goes into limp mode. The code pulled said the the driver's side throttle body crapped out. We brainstormed for probably almost an hour and a half. After blocking off the passenger side throttle body and hooking up an intake from a Stillen SC kit (one pipe with both MAF sensors into one throttle body) that was laying around the shop onto the "faulty" throttle body, the car idled fine and we realized the throttle body was fine. So we put everything back together and the car was fine?! No codes, no nothing. Weird!

Onto the tuning, as you can see on the graph posted, on roughly 4.7PSI that car made some good power! I could finally smile...knowing that this was almost all worth it. A few tweaks later, we did a pull on 11psi and the driver's side MAF sensor maxed out again and the tune leaned out bad....plus the car made less power (411whp) on a higher boost. The passenger side MAF sensor still had about 30% to work with, so we do know that the driver's side piping flows alot faster and is causing the problem. We can either troubleshoot and reweld the intake piping to move the MAF sensor mounts around or I can just order upgraded MAF sensors knowing this will solve the problem. Upgraded MAF sensors ordered!

After ZDays, I'll probably upgrad the injectors to RC750s and possibly change the exhaust housing (.82AR) for something bigger and then do a retune and make some big numbers....but I think for my power goal of 530-550whp, this turbo should be fine.

You figure the TB issue is related to using different intake tract lengths?

im still wondering why not mount the MAF's before the Split to each TB!

That is the culprit to the MAF maxing out, but we are not sure why it threw a code for a bad throttle body. It would make sense that since the driver's side MAF was getting about 20% more air than the passenger side MAF, maybe the driver's side throttle body was trying to compensate and open more than then it through a code and went into limp mode? But then why after hooking it all back together about 2 hours later, it ran fine...even after probably 5 dyno pulls?
Because then Shawn would have to modify both intake piping and relocate the BOV... if the upgraded MAFs don't work out, your idea will be the next step.

Looks good man.

Looks great! Definitely one of my favorite Zs on the forum! Can't wait to see more pictures and dyno results.

You can plum the BOV further down stream :P

But it looks "cool" where it is, haha.

bahaha i just notcied the TQ line looks like the 370z :P

Yeah like I said, that MAF on the passenger side bend is not gonna be able to get an accurate reading. Think about it, the flow of air through a bend is not equal across the entire cross section of pipe. There's going to be a gradient of different flows throughout. The MAF only measures flow across it's hot filament which is only a specific point in that cross section. There's no way for it to get an accurate average of the entire cross sectional area.


Here's an example of how flow changes through just 30degrees of bend.
http://i.imgur.com/c5snv.png


if you did that they would be reading 2x as much flow each.

I think you pretty much covered it. I really think the intake piping is going to have to be re-done in some way. I don't see any way around it. I honestly think something like the intercooler GTM uses on their SC kit would be the way to go. Of course, then you would have to do something different with the air filter on the turbo.... Easy for me to say....

Stock MAF's should be maxing out around 10-12psi, the passenger side MAF, on the radius, is NOT the problematic one. The one on the DRIVER'S side, the one on the straight piece of pipe, is the one that is maxed out. While your drawings may be true, the MAF on the radius is NOT what is causing the issue with Ryan's car. We already have a few different fixes if the upgraded MAF's do not get the car where Ryan wants it, no one needs to worry other than Ryan and myself. The injectors are also too small, they will be maxing out near if not before 500whp. Tuning with the two MAF's, as they are placed, was of no issue.

A one off build, to get as far as it did first shot is impressive... looking forward to the fully finished and tweaked up version. Dam to get this far in this time is amazing really... Good work

Ryan, happy to help buddy. I think Making that kind of power at a low psi speaks volumes about the efficiency of the system. Get the bugs worked out and that thing will make some insane power.

I have an idea bout something you can do, I'll shoot you a message tomorrow.

Wow...


Great numbers at insanely low psi!

The HPX MAF's should work they wont peg. I am curious as to want kind of
injector pulse you guys had with the 600cc?

i want 4.8 psi now!

The car is having some issues with oil temps and coolant temps. Even with a 25 row Setrab oil cooler, oil temps are 240-250 with shifting at 3k rpms and not boosting at all. I'm dropping the car off tomorrow and Shawn will see it Monday. He's going to see if he can mount the oil cooler in another location.

Today, my coolant was one dot away from the far right. I'm going to bleed the system and top off the coolant...hopefully, that will help. This seemed to be a common thing with 350Zs once the coolant system was opened up.