Bought a TURBO KIT!!!

[9591]

You're right, that's a lotta questions!

First off, nobody seems to have mentioned this, but a T3/T4 might be hard to fit with a Revhard manifold. I have a T4 on a Revhard, and it just barely clears the brake master cylinder. A T3 turbine plainly wouldn't work. This is with a '95, though; maybe S13s are different? Are we talking about S13s, here? And are you *sure* it's a T3/T4? XS Engineering doesn't seem to know the difference, so maybe you don't, either.

A Tial 35mm will bolt to the Revhard manifold. The larger Tials have a 4-bolt flange and won't work, as well as most of the other big names. Turbonetics' Deltagate will fit, but not their Racegate. Even though the Racegate has a 2-bolt flange, the bolt spacing is different. The Deltagate has a bad reputation, but I've *heard* that the problem was fixed. Whether that's true or not, I don't know, but my Deltagate has been working fine for the past 2 years (almost).

Some BOVs are designed to recirculate, some aren't, and some can do both. It's possible to use a non-recirculating BOV (that is, vented), but that'll require some non-standard tweaking. Since you don't care about the sound, don't sweat it, just recirculate.

My HKS EVC works fine, as near as I can tell. I don't find it particularly "intuitive" when I want to change something (not often), but the instructions are in English, so I can always figure it out. If I had it to do over again, I'd try to find something else that worked as well, but wasn't so hard for me to remember how to change things ('course, my memory ain't as good as it used to be, your mileage may vary).

The stock fuel system isn't going to work for too much over stock HP. That's just the way auto makers design things. There's a bit of leeway, but not much. Using a rising-rate fuel pressure regulator (RRFPR), also known as a fuel management unit (FMU), will allow the fuel injectors to flow more than their rating, thus supporting more HP. But there's a limit, and I like to think that 7psi of boost is it.

Fuel pumps: my XS Engineering kit, which uses an FMU for fuel control, and was only supposed to go to 5psi (when I bought it; they've changed that to 7psi, now; odd that there dyno results haven't changed), came with an unknown fuel pump, with hardware to make it fit. The kit instructions, however, made no mention of the pump, which leads to the conclusion that it was a new addition, which further leads to the conclusion that the stock pump had problems. Those are my conclusions; you should make your own.

Oil pan doesn't have to be welded, that's just the best way. It *will* have to be drilled, though, and that's really something that should be done with the pan off the engine (metal flakes 'n stuff). But it *can* be done with it installed, if the person doing it understands the risks, takes precautions, and just plain knows what they're doing. Do you fit that profile?

Injectors from '95-'96 300zxtt will fit, physically and electronically (I can make up words, can't I?). Maybe some others, too. But they flow 370cc/min, and the stock 240 ECU doesn't know that, so it'll tell them to open for the same length of time as the stock ones, and, of course, more-than-stock amounts of fuel will be sprayed. This may be all well and good at some particular RPM/load situation, but it'll probably suck everywhere else. It'll definately suck at idle. You'll need something to properly control them, such as an AFC, standalone ECU, or reprogrammed ECU (JWT).

The numbers LanceS13 posted are probably right (I'm just assuming), but they'd be for stock fuel pressure. Higher pressure (as provided by an FMU) would allow for higher boost. As a "for an example", I'm running 7psi on stock injectors with an FMU and an upgraded (I presume, since I don't know what it actually is) fuel pump. No apparent problems.

As I write this essay, I'm reading thru the replies to your original questions, so I came across the HKS WG suggestion. Once again, it won't fit on the Revhard manifold. BOV can be vented, but should be recirculated for ease of tuning. WG can either be recirculated or vented, your choice, but venting saves HP, is easier, and isn't really very loud (guess what I recommend?).

I haven't looked much into MAFS, so I don't know which Cobras work.

(Sheesh, take a break, 9591)

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