Megan Journal

Megan370z

the video isn't from me, but from the guy who is making the module.

I think those TB we saw were like 92mm

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Megan370z

I guess im gonna need to get the ViPec V88 sooner than I thought.... my current HR Ecu is having some hiccup, FML !!! It run 50% of the time under limp mode (2000 rpms limit). I must do a reset every time I turn it off. possible cause, melted wires up to the Throttle body.

P2103

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Megan370z

Here I am doing another update !

Yesterday was a great day to be at the track !!!
It was great to work a little bit on my friend's 350z


He managed to finish first in our Class ! and broke my record by 1 sec ! damn him with his power/weight ratio ! heheh He has the Old SG-Motorsport (Now = www.onpointdyno.com) engine which has the JWT C10 Intake/C9 Exhaust cams

there is his video


then the long drive back home which takes around 3:30hours !

I tuned the WOT part of the MAF Table (2.4 Volts+) after almost 1 year since I blew the engine, I could finally feel the torque again !
Since I had the Vq37HR installed in, the rev limiter was at 4000 rpm , now its back up to 7500rpm
I missed how much torque the car had !

so in comparison from the VHR with;
-stock intake/VHR intake manifold ,
-PPE headers
-my custom headers-back exhaust, the MAF Voltage was going up to 4.3volts. (311whp)

now,
with only the PPE headers and everything else stock (from the intake to exhaust), the MAF Volt was going to 4.15volts

and about 8% less injector duty than full VHR bolt-ons.

my guesstimate is 285whp

I'm hopping to invest a little bit on parts for my next exhaust before I try for some dyno pulls in September. I got to use that Tig welder of mine
Gonna be crazy as hell !

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Megan370z

Hey,

I have had quite a few requests on NATS delete and its not something that should be freely done for everybody.

Ive been learning a lot since I started my HR head swap and dealing with all the wiring setup that is needed to have mostly everything working as OEM.

Up to now I haven't seen anybody running the OEM ECU/BCM without having the need of the Key.

Weight saving is quite minimal but it should only be done for a true racecar!!
Im not gonna leave my NATS delete kit installed on the car and wont be for many years if that ever happen.

The reason why I came up with the kit is because Someone I know needed it. But mostly because it was a personal challenge to do it.

Im 50% completed on it and I doubt going much farther because I have other stuff to do but I just wanted to prove it could be done without too much hacking.


This picture show the ONLY WIRES that was used in my video.



Ofcourse the NATS needs to be Disactivated in the ECU.
Before someone ask why the RPM cluster doesn't work, its because it NEED the VHR ECU for the proper CAN communication, I had to removed it a little while ago because it drained my Battery everytimes, I need to install a switch for the second ECU.

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wstar

Nifty! So, I know a few more things now (it gets easier to tell what's going on when you've gutted so much of the stock wiring harnesses...). Probably the reason you don't have Nav/Radio in that scenario is that certain parts of the car (notably Nav/Radio, but I believe also things in the doors that normally don't operate when locked/off, like windows/mirrors) are powered *through* the BCM. The work you've done up there under the hood is bypassing the power control of the IPDM-ER, but not the BCM. The connector with the 3 fat wires on the BCM is where its power control function is at. The top left wire is battery input, and the other two are +12V outputs that buss to a bunch of interior things (one is "battery", one is "when ignition on", basically). I bet you'd get everything working if you also switch-bypassed across that stuff.

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Megan370z

yup pretty much everything can be by-passed, just have to know how to read the FSM

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Megan370z

A small update !
After doing some street tuning for the past 2 days. I decided to do a baseline street run with my AiM Solo DL *10 satellites connected*. doing the 1/4mile performance pull.

Right now the only power mod installed is the K&N square Filter and my PPE headers.
A week ago I estimated the power to be at 285whp Then after doing that 1/4mile run today. It ended at 14.97sec @ 103.5mph !

one thing for sure is I need a new tranny ! It doesn't like to engage fast the 2nd & 4th gear in the high RPM Zone (6000+), also the 5th grind as I already mentioned a little while ago. Not going back on the track with it for sure ! (next year)

Based on weight & time;
new estimate on power is 270whp which is kind of right with what I have seen from other lightly HR engine modded. Im planning for a baseline dyno run at the end of September for the true baseline power !

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Megan370z

BIG UPDATE


I ******* hate Uprev now ,, its official. ******* junk piece of **** , I always said it for the past 2 years but I *we* had to deal with it anyway since it was pretty much the only user configurable software for the 370z

I feel bad for you VVEL user....
Give me that ViPec V88 !


Any Shop is interested for a full exclusive car sponsorship
All I need is 5G $ !!

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SPOHN

Your update didn't tell us what happened. Sorry for your troubles.

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Megan370z

well, its when I see other old & new platform and their tuning software are relatively better than what we got so far for the 370z ...

now Im running the HR ECU which has tuning capability for the Cam.

right now im having a trust issue with Uprev because;

Im having a big trust issue with Uprev right now,
Since I swaped the HR heads into my 370z, I couldn't datalog with Cipher until I tried again today.
I never had problem with the Rom Editor for logging..


so doing a test map I make sure the IDLE area is at 0deg on both Intake & Exhaust Table.

I get this with the Rom Editor;
Intake Bank 1 = 0
Intake Bank 2 = 0
Exhaust Bank 1 = 0
Exhaust Bank 2 = 130

If I add 10deg on both ,, the result is like this
Intake Bank 1 = 10
Intake Bank 2 = 10
Exhaust Bank 1 = 10
Exhaust Bank 2 = 148 (+18 !!)

Then under Cipher datalogging I get this with 0deg in IDLE area Int. & Exh
Intake Bank 1 = 0
Intake Bank 2 = 0
Exhaust Bank 1 = 130
Exhaust Bank 2 = 130

if I add 10deg I get this
Intake Bank 1 = 0
Intake Bank 2 = 0
Exhaust Bank 1 = 112
Exhaust Bank 2 = 111


so I cant trust anything in this.
My Favor is to see what other HR owner gets please .....


edit; the engine idle fine, no DTC, doing a 1/4 mile performance run with my AiM Solo DL , I got 103.5mph which look to be alright for a lightly modded HR engine.
So which one can I trust Cipher or Rom Editor.
BUt I couldn't datalog with Cipher until today, I guess they fixed something recently ?

edit;
There was a time when Uprev wanted to ditch Cipher and rely on the ROM Editor for datalog and tuning...
So im not too sure why there is a different between both datalog program... and this add a doubt in my mind... in why would one say XXX and the other one say ZZZZ

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Megan370z

There we go with a Positive Update !

I had to replace the driver side valve cover gasket because a while ago when I was looking where the ticking was coming from. One side of the gasket moved during installation and I managed to cut it while bolting down the cover.

So, today I changed it and to my big surprise, I forgot how much oil was being sucked up into the intake manifold !
I decided to install my old Oil Catch Can back ! I should have done this when I put the engine back in....

once this was one done, I started to mesure and investigate for my future single exit exhaust !
and I discovered that we might be able to use one of the 350z subframe bracket. On the same location of the 370z frame, there is 2 pre-threaded location that could be bolted to the 350z subframe bracket.

Anyway Im removing that raised part of our 370z and will be making a similar 350z bracket to allow me to have a proper center single exit exhaust

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wstar

I think you're going to have to rebadge this car as a 360Z at this point

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Rusty

Yea, split the difference between the 350 and 370.

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Megan370z

The first few exhaust items has been ordered thru Burns Stainless

Its gonna be an expensive setup !

The list is about 2500$ in parts alone !
From the modified Momentum header to the muffler

After some drawing and measurement under the car.
The plan is having an Y-Pipe with removable part similar to the Motordyne XYZ but in reverse.

I will have the choice to install either 2x HFC or 2x Resonator into the Y-Pipe.
the Y-Pipe collector is gonna be quite special, I promess!

all equipped with V-Bands ( 8 in total )

So, the choice is;
2x Resonator or 2x HFC in ( 2.5'' )
1x Resonator 3.5''
1x Muffler 3.5''

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Megan370z

I received some goodies !!

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