Here's my results. I met up with Eric and Josh for DynoExtreme's dyno day. Pretty cool day overall and got to see quit a few Skylines and some of my fellow Supra brothers. I paid $45 for two pulls with A/F readout.

99 SE 5spd, with about 115k on the odo.



318.63 hp, 284.05 TQ

After I hit the recall button on the boost gauge, it read 9.5 psi.

Mods:

V2 Vortech blower
CAI: custom with K&N filter capable of 900 cfm. (freakin' huge) [overkill I know]
3" charge pipe
clocked blower
3.25 pulley (10psi)
Exedy Stage II carbon clutch
Fidanza Flywheel
B&M STS
Cattman Y-pipe
Cattman Fastcat
Cattman Catback
(Bosch BOV-not the SSQV as seen in sig)

Now that I FINALLY dyno'd, after talking about it with Josh forevaaaaaar (since I couldn't dyno at Stillen day last year due to a slipping OEM clutch), I need to decide whether to install a brand new MEVI kit I've had sitting in the garage for the last 6 months (for ease of installation) or install the full 00VI kit I recently purchased and ask for installation headaches (but higher gains). Let the modding continue!!

 

Very nice numbers, especially without VI of any sort. You've gotta do something about that AFR though, it's bad.

 

Nice numbers, gets scary lean up top though

 

Nice James. You need to get a little more fuel up top, but nice numbers.

 

Sell the MEVI and get the '00VI with the matching lower and 290cc injectors. Remove the power valve, install everything and see 350whp.

 

Why isnt his power dropping like crazy after 5500rpm?

 

Because of the way the centrifugal blowers work. And the fact that his dangerous A/F is pushing his power levels up higher.

 

I would say his power is actually starting to fall off when he goes lean.

SC guys always make peak power at redline regardless of their stock IM. The fact that boost keeps rising untill redline over takes the the terrible high flow charectoristics of the stock IM.

 

What fuel managment are you using?

What MAF? What injectors?

I would guess stock injectors by looking at what power level you start to go lean.

I would not be boosting to redine with that AFR.

 

goodlord...nice numbers, they seem high for your pulley size. I need to see what is wrong with my car. I have a smaller pulley and not making that much power.

 

Better do something with your MKIV before the Max catches up

 

Stock MAF, stock injectors. I'm using the Vortech FMU with whatever disk it came with, and pump that were supplied with the Stillen kit.

Thanks for the input guys. So what do you suggest I do to not be so lean up top? SAFCII? 370cc injectors? or?

Not sure if it matters to what you suggest, but keep in mind that I'll be installing a MEVI or 00VI.

Ha. no kidding. Josh said the same thing the other day!

 

your A32 MAF is maxed out which is causing it to go lean up top. With the addition of the 00 VI and Z32 MAF you will easily see 340whp. I gained 25whp up top with my MEVI after doing some dyno testing with it open vs closed. I would get some larger injectors also, it scares me that you guys use the FMU for tuning at those power levels with the little injectors.

 

If you want to keep that power level your gonna have to make a change. Your injectors are maxed out, so just an SAFC will do nothing for you since it can't add fuel if you can't increse the pulse width any more than it is now. Been in that situation before when I ran stock injectors, stock MAF, and an FMU.

You could put in a larger disk and pull fuel with an SAFC, but that is not a good solution either because you will be running ungodly high fuel pressure to make that work

Not sure if the MAF is maxed out yet or not. The MAF is a litte different animal because one can max out a MAF at two totally different power levels. People say a MAF is good for XXX hp, but that really isn't a way to rate a MAF. A MAF can only meter a certian amount air, the power made with that air is independant of the MAF. With my crappy JWT ECU tune I could have maxed out my Z32 MAF at 400hp but with my stock ECU the Z32 MAF is good for closer to 500hp. This is because my stock ECU makes more power per lb of boost than the JWT ECU did. Same air flow, differnt power.

So at this point your making too much power for the basic stock injector, stock MAF, and FMU set up. It's not a bad set up for lower power levels but your just out of it's range

So you need bigger injectors and a way to controll them. You might as well get a Z32 MAF since you have either already maxed it out or are close to doing so

Many different ways to go about this.

A inexpensive, easy, and way to make good power would be larger injectors, Z32 MAF, and SAFC. Ask slimer about his set up.

Of course if you want more controll over different parameters and plan on upping the boost/power you coudld go with emanage.

 

that very nice number on the max what did josh get on his max ?

 

Thanks for the kudos Mike. James, a good start would be that setup that Mike described. You can get Deatschwerks injectors for a good price, I got 410cc, as well as a z32 for under $100 and a cheap safc for around $200. For a $500 investment, you can increase your power safely. Its not the best route to take, but its simple, proven and easy. I'm having trouble getting my laptop to sync up with my usb to serial converter because then I would have a bunch of datalogs to back it.

 

Would it be possible to (safely) see 400whp/400wtq with 370cc injectors and a Z32 MAF?

Although with the V1 I assume torque would be lower, more like 400/360. But still, is it possible to push 400whp on 370cc injectors at a reasonable Fuel Pressure (Stock 3.0 bar)?

Since the 370 are OEM on the 300zx I assume they can be found much cheaper than 410+...

 

Yeah, but they're used and unflow tested. You generally have to pay $18+ per injector for ultra sonic cleaning and flow testing.

As for "safe" hp #'s, you would probably go with a ROM tune or an EMU tune to have the most control over your engine, but its doable. I was planning on using a 3.1:1 rising rate to bump fuel pressure at higher psi, so the correction wouldn't be as high with the safc. Once I get the usb to serial to sync and get my pathy (within about two weeks) I will be willing to test more.

 

Wouldn't it be safest to use stock fuel pressure?

So I take it that means they're already cleaned and tested if I buy them from Deatschwerks?

 

Yeah, they are, you get an org discount too. Dave gives you a flow chart and everything. He has his own ASNU in the shop. Talk with Mike about it.

Stock fuel pressure is best, but if you're looking for a 400whp car, you will max the duty cycle on the injectors if you are planning on using 370's. 410-440's give you a little more headroom for horsepower.

The reason why I want to go with a 30 psi base fp is because I want the injectors and MAF to be close to stock (300zx) injector pulse width during closed loop. If I bump the fuel pressure in open loop, the injectors will flow more. Since I have an adjustable rising rate, I can tune the curve to be close to 11.5 AFR on my wideband and fine tune with the SAFC to not play with timing that much.

 

400 would be pusing it with 370's, you would probably have to turn up base fuel pressure.

I would do like my set up. Not really sure why Steve went with 410's and kept the FMU.

Our injectors won't be much more than a set of used 6 370's, and they will come cleaned and flow tested.

 

I went with the 410's because of that issue that I was having and the 550's were still being developed. Thanks again for the help when that happened.

 

nice numbers now drop in that vi and get a z32 + safc2 + some bigger injectors and see how much of a difference the car will be, ud be surprised.

 

I just sent you a PM.

BTW, does it matter that I'm using the 3.5 fuel rail (with 1995 FPR)?

 

They have top feed injectors now too.

 

Good numbers. Nice job!

 

Thanks for the comments guys.

Some follow up questions…

Why am I not making peak power at redline? Peak power seems to occur at 6000 rpm’s, not 6500.

What’s the expensive route? EU instead of the SAFC? Or?

What extra parameters would I be able to control? Not sure if it’s worth it to go EU, since I’m a newb when it comes to tuning. I want to take baby steps, but I don’t want to buy things twice.

Thanks for your input Mike, and your PM. Much appreciated. With the .org discount, how much would 550cc injectors cost?? (I’ll be keeping my OEM injectors)


If this is not the best route to take, what is?

Are all the bugs worked out of the EU? (something about reading the crank signal)

Is there a gismo that is can Acquire, Record, Download, Analyze AND be an A/F controller all-in-one?

Is there anything the PLX-R500 wideband controller can do that the EU can’t?

How does the Vortech SFMU fit into the scheme of things? Not necessary, or another nice tuning device?

Also, since my CAT was in place during the dyno, how did that affect my A/F numbers? If I had a test pipe in place, hence a more accurate reading, would I be more lean or more rich than what I’m showing?

When it comes to tuning, I'm a newb, so be gentle. LOL

 

You'll be able to control rev limit and timing. Two big things once they start working. I'm not so much concerned with timing as the rev limit. To be able to spin that blower a little faster,

Talk to Icey about that, I have no clue
Nope. Actually the PLX and the ZT-2 are great Datalogging units that can accomodate extra inputs to be recorded. However, if you ever plan on using the EU, then the PLX will be better because the zt-2 doesn't have a straight line AFR signal.

Another nice tuning device, a fuel pressure regulator (something that I need), and instead of a regular FMU, its more like the Cartech/BEGI.

It will say that it is leaner than it actually is.

Hope that answered enough for you.
Steve

 

Which question did you answer? With my CAT in place or the test pipe in place? So to clarify, I'm not really as lean as my graph shows, since I had my CAT in?

Thanks Steve.

 

The cat diverts the air, making you seem leaner than you actually are.

 

why those seem to be great numbers....and u have alot of tq compared to alot of other 9-10psi s/c maxes

 

There have been a ton of questions aksed in the last few posts, I will try and throw my 2 cents in on some of them


Can't be 100% sure why your losing power after 6K because I don't know your car and everything that is going on with it. But like I already stated, from looking at your dyno graph it would be an obvious guess that you stop making power because you go so lean up top. That is not just a little lean, that is injectors being maxed out and your car being desperate for fuel. But it could also be a loss in boost...do you keep making boost steadily to redline or does it fade off a bit? But the obvious guess would be becuase your going lean.

You have gond beyond your current fuel management system. That is a given. You can either run less power/boost or upgrade your fuel system. It's that simple.

Your asking questions that dont' make a any sense. Nothing wrong with that, that is why we are here.

The PLX-R500 is soley a data logging unit. EU is capable of data logging, but it is more of a control device for fuel, timing, and other parameters. Two differnt products that are really for two differnt things.

The major issue here is what your going to do at this point for fuel management. To make that decision you need to ask yourself three basic questions

Realisticly, how much power to you ultimately want to make?

How much money do you want to spend?

How knowledgeable are you with tuning and how much time and effort do you want to put into this?

 

Mike, from talking with James and Josh via pm, they just want a solid setup. James has a Supra, so I'm guessing he already took the power route there and now wants a nice daily driver.

Upgrading the fuel set-up is next and thats probably why he pmed you about injectors. I think the next thing is to figure out how he is going to control IPW and fuel pressure.

 

370s and a Z32 MAF. Thats some good numbers. I thought you could not achieve those numbers with a regular manifold I guess you can. Makes me want to pull off that MEVI and put my stocker back on.

 

Well, according to the butt dyno and boost gauge, it pulls like a **** all the way to redline.

Yes, I am fully aware of this and I do see your point, I was just wondering of any major advantages to having both, when the EU can do it all, more or less.

That’s a good question. I haven’t really given it too much thought. I figured I would do everything possible under the sun and see where I end up. But to answer your question, if I could see 400.00000001 HP, I would be content.

That is one question I intentionally don’t think about. LOL To tell you the truth, it doesn’t really matter. I just hate buying things twice, and I don’t believe in cutting corners to save a few bucks. So basically whatever it takes to get the job done.. right (hopefully the first time)

I’m not very knowledgeable at all when it comes to tuning, but I’m willing to put in as much time as effort as it takes to have a fun, reliable (for the most part) fast car. Working on cars/learing about cars has been my major hobby for the past 3 years, and I don’t see it slowing down anytime soon.

BTW, if I go with 550cc injectors, can you tell how much they would cost, including the org discount (and me keeping my stock injectors)??


Mooooooooooost definately.

 

But the butt dyno is wront. Your losing power....IMO probably due to the AFR


If your looking at makings as much as 400hp with a SC then your going to want controll over as many parameters as possible. (400 SC hp is going to be hard to achieve). Go with EU or even just the Blue emanage and be equipped to data log everything. Maybe even look at getting J&S on top of it all. consider building the tranny, no fun to be worried about 3rd gear every pull you make.

If you were just wanting to do enough to be safe on the power your making now it would be alot more simple. But if you truely intend on making big #'s and pushing it to the limit your gonna want a compatant piggy back like emanage or maybe even a stand alone.


Our forum discount is 10% off the price on the website.

 

The A32 MAF tops out at about 315hp
http://www.cyberhub.net/dyno/013104a.jpg

The 370cc Injectors top out at about 365hp (I am at 360hp or so and am at 97% duty cycle...already dangerous).

I'm not sure where the Z32 MAF tops out.....best guess is 400hp.

 

Mike, Ian, Steve... thanks for the info. Good stuff.

After reading EU threads for hours and hours, it appears all the bugs aren't worked out yet and Greddy does not support our engine.

So, I think Greddy or any other stand alone is out of the question at this point in time. For now, I wouldn't trust Greedy like I wouldn't trust a fat kid in room by himself with a cupcake even though I told him not to eat it. But, once a few people are successful with the EU, I'll jump into the fire. With that said, what's the final verdict?

550cc injectors, Z32 MAF and ????? (Still lookin' at wideband kits and still researching the SAFCII vs VAFC)

Getting excited about the 00VI going in the next couple of weeks.

 

I do not know why people are buying that new EU. The greddy blue is more then good enough for our cars. Myself and others have used it and I tuned with it. For AFR, Boost Controller and other features the Greddy blue is a pretty good unit for the money IMO.

 

Yhea, you can just go regular emanage and it will probably be all you will need anyhow.

If you try just the larger MAF and larger injector method. A regular SAFC-II will work fine....but I think the VAFC might have more rpm points, not sure.