2milehi

So I have searched and I have not ran across a definite answer of flow rate for the pink injectors. Does anyone know what the flow rate is and what pressure? This info will help me pick out injectors. Thanks

No problem - there is another doing the DETT thing and he just got it running a few weeks ago. With the MegaSquirt, there is a lot you can do which means there is the potential to screw up. There is a learning curve and A LOT of support from forums to get you going. But once you learn how to tune, it does get a lot easier. Go to msefi.com and surf around, but the best teacher is experience. And with the low cost of a MegaSquirt, you don't need a lot of money to get a stand alone controller. This is my third Megasquirt install and it took me about 2 hours with the Pf to get a decent tune that will idle and support 6 pound of boost.

It always helps to see other "get it going". I myself have been inspired by others to take a stab at something. This is the first time I have dove in with both feet. It has been a little frustrating but I get through it. And some times you just have to go for it and see what happens.

I didn't do a VG30DETT installed, I just added a turbo to a VG30. The STi side feeds flow 560 cc/min (I am not sure at what pressure). Here is a kit that does what I am doing. DIYPNP

Will the top intake of my Pf bolt to this intake?

Thanks! I had to use factory schematics to locate which wire went to which pin. I have some notes and spreadsheets that I will post for anyone who might be interested.

All right - one step forward two steps back. But those back steps brought forth valuable knowledge. So here are the two steps back. Top plenum is removed along with the fuel rail and injectors. The good news is that I put a Subaru side feed injector in place of the #1 stock injector. No fuel leaks and the Pf ran fine. I will use some lock-tight to keep the cap screws from backing out. They don't fully seat but there was no fuel leaking. The nozzle does stick out a 1/4" more but it does not interfere with anything in the intake port. So this means other side feed injectors will work!

I did get the Walbro pump in the mail yesterday but that is about it. I haven't had much of a chance to do anything on the Pf. Responsibilities with work and rental properties. And the next few weeks don't look much better. The injectors have also brought me to a stop. I am having trouble finding higher flowing injectors that will fit into the stock fuel rails. Nobody really knows if other types of side-feed injectors will work in the stock fuel rails. I really don't want to start hand-crafting fuel lines in there. That will really up the price of this power-adder install.

So after a dozen or so drill bits (broken), a broken easy-out, and a mangled screwdriver I finally extracted the broken stud from the passenger side rear exhaust port. Also the passenger side manifold was "open". I pulled the manifold off and checked for squareness and the rear port was almost a 1/4" out of square. I had another manifold that was a lot more square. This extraction was pretty rough on the threads. I really couldn't get a 11/32 drill square to the hole for the 10 x 1.25 exhaust stud. I first used a 9 x 1.25 tap and that followed the 8 x 1.25 threads pretty good. Then in the same fashion I used a 10 x 1.25 tap to cut the threads. That also worked well and left me a hole that was pretty square to the exhaust port. So all this effort was not in vain. It took care of the exhaust leak and it sounds so much better. Now if I can find some bigger drop-in injectors that don't cost a small fortune. I also have a Walbro fuel pump on the way.

Looking locally, these right now don't exist. And I tried ebay and craigslist with little success. Any other recommendations?

Very cool - that dual throttle body engine looks so bad ass! Looks like everything should fit under the hood. Good work!

Just stock cams. I have about $700 total in the turbo build. Cams would break the bank.

If I swap an engine, it would be a DOHC varity BUT I would have to redo the exhaust. I can't see how 10% more liters yield that much more power. From Wikipedia The VG30E 3.0 L (2960 cc) produced 153 hp (114 kW) and 182 ft·lbf (247 N·m). The VG33E 3.3 L (3275 cc) produced 170 hp (134 kW) and 202 ft·lbf (274 N·m). Like I figured - about a 10% increase in power when going to 3.3 liters. Granted I have never driven the VG33. Thanks! I am in need of bigger injectors (another post) and a bigger fuel pump (Walbro).

Downpipe for the turbo

I am shooting for 15 psi boost. I will never stick it on a dyno since I can road tune it pretty good. My "goal" is to be able to pull a 19' boat and camping gear up Eisenhower tunnel (11,000 feet above sea level) at 65 MPH. For the pressure regulator, I found a controllable set-up using a vice. Slowly squeeze the vice until about 2 psi over desired pressure and then release.

You got my number I did it on a Subaru and it was pretty easy. Figure the Pf shouldn't be too different.

This might be the answer to my question. And with bumping up fuel pressure via "tweaking" the pressure regulator that should get me enough fuel with some room to spare. Thanks!

Thanks for pointing that out but the fuel rails are $180. For $40 more ($220 total) I can get 6 side feed STi injectors that fit in the factory fuel rails.

My goal is 15 psi as long as I have the fuel system to back it up.

I am needing injectors in the 500+ cc/min capacity and of high impedance flavoring. Not much luck on getting injectors only from a 300ZX.

Nice job - you had a lot more to tackle with building up that hybrid tranny. I am very interested in pics.

The tuning software that come with MegaSquirt can log data. So I go to a captured log and look for a max value and find that my duty cycle for the injectors is at 80%. I will post a screen shot later. It is a pretty cool program.

So I am starting to hit a ceiling with the turbo project. As suspected, I am finding that the injectors are not big enough for lots of boost. I have started searching the 'net for injectors and I am seeing a hefty price tag for bigger Nissan injectors. Anyone know where I can source used 300Z (or some other form of turboed Nissan engine) injectors at a decent price? Thanks PS I sourced STi injectors for my Subaru buildup for $150 for all 4 so I know it can be done.

So did some tuning and my injectors are at 80% duty cycle at 5500 RPM and 7 PSI boost. No point to tune for higher boost until I get bigger injectors and a Walbro pump installed.

Some updated pics. I added the MAT sensor, the BOV, and air intake/filter. The wiring is mostly complete as well as intercooler ducting And the brains behind the whole operation. Once done tuning I will remove the wires for the wide band controller and install the rest of the covers over the ECU.