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Looking good. That's a ton of mods for just having had the car for over a month. Welcome to the club and enjoy!
I should have probably clarified a bit more in my background, as I’ve actually owned the car since 2016. Thanks and it’s definitely enjoyable.
Originally Posted by gill1606
stealing a dude's modded out car, which he worked hard to build, and stripping it down for parts like that is just low, totally disrespectful. Sorry man, hopefully this build will be just as satisfying for you as your last without the previous bad happenings.
I totally agree, but it sucks that as many good people there are in our world, we have many bad ones too. Thank you, the journey on this build so far is satisfying for sure. I love boost but responsive n/a from a bigger displacement is fun for sure.
As the holiday rolls around, I'll get some free time to install these parts.
Z1 Slotted 2 piece rotors, front and rear along with Stoptech #309 pads.
I bought a full differential assembly with 3.916 gearing from Central20 off a 350z. The housing will get cleaned up and painted
. Adding the Z1 differential cover to it also. I figured I might as well do the bushings while I'm there so I bought the subframe-differential hushing and the two that go in the differential.
My gaskets to do my valve cover and replacements for when I swap to my ported intake manifold also came in. But Concept Z sent me one wrong gasket to goes between the head and the lower manifold.
Last night, Martin helped me flash my car back to stock form on Uprev so I can transition to Ecutek. I needed to send a ROM file to Ecutek have my VIn in their system. However, I got an email this morning from them saying that my ROM file I provided is supported on ProECU and to make sure I have the latest version. I'll try to run an update and see how it comes out.
I manage to buy a set of intake manifold and GTR 550cc injector in the fuel rail for a great price. The manifolds were port by CFM Performance. Install last night overall, went pretty well.
Martin also had my car switched over to Ecutek now. All I have to do tonight is reinstall my intake pipes and attempt to start the car. If all is good, the car should start right up with no issues.
Lower manifold with GTR 550cc injector in the fuel rail already.
This was what I saw after removing the lower intake manifold.
I tried to clean off as much of the gunk as possibly.
I emptied out my oil catch can. This was about 3,000 miles.
After a long drive to get to the shop, my car kept throwing a MAF code and I had to reset the code every couple of miles, I finally got on the dyno.
Martin working his magic.
Final numbers weren't what I expected, and still on the super low end compared to what I am reading everywhere else, but the car feels amazing, not to mention I'm getting 30 mpg now.
That's a nice A/F line for a N/A car. You can't complain with 30mpg, lol.
I couldn't believe I was actually getting 30-32mpg. I manage to squeeze an extra day before I have to pump.
Originally Posted by qmantran
Why did you go from uprev to ecutek?
Did you ever consider admin tuned?
I originally wanted someone local so my choices were Jon at Z1 or Martin (R.S. Enthalpy Tune), and Jon said it was a lot of work to get the EPS throttle bodies and 3" right and he was super busy so that left me with Martin. I knew from the stat I wanted Ecutek since my plan is to go flex fuel, but during my first tune session, the organizer mistakenly wrote me down for Uprev instead of Ecutek.
I had a lot of trouble with the drivability on Uprev with the EPS throttle body, its not to say that other tuners could have made it work, but Martin mentioned that same day that he hasn't found a solution on Uprev. He offered to retune my car for free on Ecutek so I decided to go ahead to do ported intake manifolds and larger injectors. If I had more time, I would have done fuel pump also.
Martin tunes more on Ecutek and switching over has been night and day in terms of drivabilty. I'm still trying to figure out some small idle issues, not sure if i have a vacuum leak or what but its minor.
What were your engine mods for that dyno? Running E85 or just bigger injectors?
CFM Performance Ported Upper and Lower Intake Manifold
EPS Throttle Bodies
Michael Upton's 3" Long Tube Intakes
Circuit Werks Test Pipes
Motordyne Y-pipe
TopSpeed y-back exhaust
larger injectors were just in prepartion for going E85 but I'm still on 93. On Dynojets, I think others with the same mods have been putting doing numbers in the 330s. I plan to get my car dynoed over at Z1 for a better comparison.
I'll be honest, I'm more interested in the curve then the max HP. The numbers are good in my opinion. Z1, TopSpeed, and CounterSteer, uses a Dynojet; Forged i think uses a DynoDynamics. I was trying to figure out why you have a 25ft/lb drop from 6k to 7k.
Your short runner length on your plenum should have helped with your high end, but didn't. Most VQ37s have that much loss (give or take) in that range before just dropping past 7k, but some can hold the line at 6k till 7k. I am starting to think its headers that do it.
Once you go E85 you will 330s, easy, however expect your gas mileage to drop down to about 22-23 mpg when above 25%E.
I'll be honest, I'm more interested in the curve then the max HP. The numbers are good in my opinion. Z1, TopSpeed, and CounterSteer, uses a Dynojet; Forged i think uses a DynoDynamics. I was trying to figure out why you have a 25ft/lb drop from 6k to 7k.
Your short runner length on your plenum should have helped with your high end, but didn't. Most VQ37s have that much loss (give or take) in that range before just dropping past 7k, but some can hold the line at 6k till 7k. I am starting to think its headers that do it.
Once you go E85 you will 330s, easy, however expect your gas mileage to drop down to about 22-23 mpg when above 25%E.
I wonder when I switch over to my Motordyne full exhaust if I'll pick up more on top? Thank you for your insight.
I would be curious to see. It's hard to get data on the same engine with dynos at the same dyno. I took the liberty of overlapping your two posted dynos so you can look at what was gained with the ported manifolds and ECUtek. If you can get the charts for your re-tune with exhaust and 93OCT, then your final with E85 (with your E %) that would actually be super insightful if you used the same dyno.
Last edited by zer099; 11-15-2018 at 09:14 PM.
Reason: picture not uploading
10-08-2018, 07:16 PM
