2milehi

Your sentence structure is kind of hard to follow. As for boost creep, I opened up the internal wastegate hole and I am not seeing any boost creep. Also I will tune for the higher boost pressure and therefore not have a lean issue. If it does overboost the MS will shut it down. So I feel that I am covered there. As for monitoring detonation, I will be using detonation cans to tune in the final fuel/spark map. I have built a detonation detection circuit for my Subie and it works ok.

Street tune only. I need to interface a boost controller to the MS. The wastegate is maxed out at 11 psi.

The graph is stretched out to better see what is going on. Acronyms TP - Throttle Position AFR(WBO2) - Air to Fuel Ratio from a WideBand sensor/controller PW - Pulse Width of injector in milliseconds CLT - Coolant Temperature MAT - Manifold Air Temperature

I used the stock intake manifold. I will make another post on a DIY MegaSquirt and post all info.

I turned up the boost by adjusting the waste gate arm. Got to 11 psi with more headroom based on duty cycle I'll need to add a boost controller to get more boost. The Pf runs awesome.

I had to change the pigtails for the new injectors. I really try not to cut into the factory wiring harness, but I didn't have much of a choice.

Injectors are in and I have bolted everything back together. The 370 injectors are now flowing 410 cc/min at the higher pressure. A couple of hoses tore when taking the top part of the manifold off. I'll be trying my damnest to get the Pf running this weekend. I need to tweek the fuel map by reducing fuel flow to 44% of where it is now. Man - nothing like a vacation and rental property to get in the way of progress.

The Subie injectors are high resistance.

That is correct. In the below pic you can see that the left side of the turbo mounting flange is from the driver's side exhaust manifold. The right side of the flange is connected to a cross-over pipe that connects to the passenger side manifold.

Sorry I have been out of the country for 2 weeks and prior to that I had a week long out of state convention. I got back last night and I am still a little jet laggy. I did get some bigger injectors (370 cc/min) and just installed them. I will test them tomorrow.

Get rid of the synthetic oil and go to dino oil.

So 45 gph calculates to 170 lph which is about a third less than the Walbro. Forty five gph calculates to 350 hp. IMO I would measure what comes out of the return while the engine is running. At idle not much fuel is used and the alternator is charging giving you more power at the pump. It should take 1 minute 20 seconds to fill that gallon container. And yes the factory fuel pump is a lot larger looking than the Walbro. Hope it fits.

^^^ Yeah - that is our local paper (free). The back page always has an "interesting" story.

What an uphill climb to figure out what injectors I am going to use. And they were under my nose all this time. So I flowed both the stock Pf injector and the injector that came in a '90s 2.5 Subaru. The stock one flowed 180 cc/min and the Subie one flowed 265 cc/min. I bumped up fuel pressure from 40 psi to 50 psi. That will make the Subie injectors flow almost 300 cc/min and that should be good for 260 hp at the crank. Now to find 2 more injectors since the Subie came with four. Since the intake is off, it got a good cleaning and I get a better understanding of the hidden vacuum circuits. Mean time I need to figure out how the Walbro pump fits in place of the factory one.

Winner winner, chicken dinner. I just flowed the injectors and I measured 30 cc in 10 seconds. That will equate to 180 cc/min. I will give +/- 10 cc.

Before ripping out the engine, first determine that the engine is bad. Get a compression test done on the engine. While the plugs are out take a good look at the part of the plug that goes into the combustion chamber. There is a lot of information about the engine in that area of the spark plugs.

Here is a DIYPNP kit from DIYAutoTune For a Nissan Or roll your own More info here

With a BSFC of 0.45 and 185 hp from the VG30E, that calculate to about 161 cc/min at 90% duty cycle. I'll just flow to know.

James - thanks for answering the question. That does help me but I will flow them to be certain. I have searched on the 'net and haven't found an answer.

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.