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DIY Turbo Discussion greddy on a 1.8? homebrew kit?

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Old 08-20-2007, 12:56 PM   #21
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Then what would be needed to get the non-pnp MS working?

There a few different places, but I would go thru Jerry. He puts alot of time, getting MS parts for Miata.


www.diyautotune.com

You can also send him an PM on here, LostSoul is his user name, if you want to ask about the 96-97 Pnp.

As for the person asking about the 00. I believe Jerry has plans to do a Pnp for the NBs but I am not sure how long.
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Old 08-20-2007, 06:01 PM   #22
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Well after thinking about it, I think I will just pick up a used voodoo box for now as I really want to just get the MS pnp when it comes out for the 97. Plus my budget seems to be continuously shrinking . And even $400 for a MS plus the wiring stuff that I would need is a bit much as of now. The voodoo box seems to fit in perfectly with my budget as of now, plus as I am buying one used, as I did with the bipes, I can hopefully sell them when the time comes without much loss.

I think this is the way I will go unless someone can convince me that the wiring for the MS is something that is very doable (diagram?), and not costly.
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Old 08-20-2007, 06:59 PM   #23
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Stick with a used voodoo and used bipes if you can for now nice funds are pretty tight. Then when you've saved enough, go for the MS. Likely you'll get almost as much as you paid for the voodoo and bipes if you bought it used.
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Old 08-20-2007, 08:29 PM   #24
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uh just get a FPR dude. fpr+300cc injectors works very well for alot of us before MS came along.
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Old 08-21-2007, 05:58 AM   #25
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But wouldn't a voodoo/bipes be much more tunable than a fpr? What kind of boost/power could I expect from a fpr vs voodoo/bipes? Assuming that I am running 305's.
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Old 08-21-2007, 07:44 AM   #26
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aem fic ftw
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Old 08-21-2007, 07:52 AM   #27
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aem fic ftw
Do you think you could explain the software? Thats the only reason I am starting to shy away from that system, it all seems a bit overwhelming.
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Old 08-21-2007, 07:59 AM   #28
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If the f/ic seems overwhelming then you need to stick with a bipes/fmu. AEMs f/ic is one of the easiest ones out there. The EMS is a pain in the *** though.
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Old 08-21-2007, 02:51 PM   #29
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Vodoo is very limited you wont have near the head room of course a FPR is easy you just put it on and run. If you find you have to much fuel change the rae with a enw disc or a mbc or ebc inline tot he fpr simple easy effective. FRP and 305cc/min injectors at say 85 psi sqrt(85/45)*305-419 cc/min/10.5/.5*4= enough fuel for 300 bhp. Vodoo on the other hand 305/10.5/.5*4= 232 bhp ceiling does this make any sense to you. The stock ecu should have no trouble running the 305's it is only 60 or so cc/min bigger than stock.
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Old 08-21-2007, 08:54 PM   #30
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But at 85 psi wouldn't I need a new fuel pump? Or is that just at the limit of the stock one? And wouldn't a begi rrfpr that could be adjusted be a more adjustable solution?

Also, are you saying that I could feisably run about 250whp with just bipes, 305's and a fmu?
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Old 08-21-2007, 09:07 PM   #31
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speaking of which, I dont want to hijack this thread but what hp level is the stock pump good for?
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Old 08-21-2007, 09:19 PM   #32
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Originally Posted by speedf50 View Post
But at 85 psi wouldn't I need a new fuel pump? Or is that just at the limit of the stock one? And wouldn't a begi rrfpr that could be adjusted be a more adjustable solution?

Also, are you saying that I could feisably run about 250whp with just bipes, 305's and a fmu?
Yes i am Andy floyd ran 300whp and i ran 250+ with just my FMU. and WI 85 psiis the limit of the stock FP for the most part. Yes a begi is nice but at 200$ retale a 50-60$ obx 12-1 like mine with a 2-8$ mbc works just fine. And a walboro 190 hp is only 100$ and install is a snap so why not. OBX 12-1 buy mine for 60$ or a new one of ebay 70-80$ +mbc8$ +190hp 100. worst case scenario you have 200$ in the whole setup. And like i said before the begi costs 200$ off the shelf so you decide. You wanna be cheap or you wanna act like a name means somehting to ya.
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Old 08-21-2007, 09:44 PM   #33
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Do you think that WI is needed to run 250whp with just a fmu? And a mbc would just delay the boost from getting to the fmu correct? But once the boost reaches the fmu, wouldn't you get a huge raise in fuel pressure? Wouldn't getting other discs work better? Or is the 12-1 ok with just a mbc.

I'd rather spend less if I can a new fuel pump and vortech fmu sounds like a promising option.
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Old 08-21-2007, 09:57 PM   #34
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12-1 is ok but you can do disks as well. Nah you can use your bipes WI costs 170 + $ My problem with 12-1 and 305's was the onset was to sudden by 2-3 psi i had 60 or so psi of FP but when i delayed and bled off boost via MBC the hit came a little later and the closed loop ecu fueling pulled the fuel back enough coupled with the fact hat i was flowing the air for the hp by the time the FMU hit means better power. I am not 100% but the vortech disks work on a OBX as well the size is most certianly very close. idealy a 7-1 or 6-1 will put you just right for 250whp by 12-13 psi.
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Old 08-21-2007, 10:02 PM   #35
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one should simply perform a few simple math equations when choosing a fmu ratio.
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Old 08-21-2007, 10:05 PM   #36
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One should know EXACTLY what they're doing before attempting running lots of power with an FMU.

Of course, those who understand, also understand that it's a dumb idea.
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Old 08-21-2007, 10:10 PM   #37
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Ben just becouse it isn't fancy doesn't mean it doesnot work. We got along fine before MS swept the site. this will give him the ability ot have fun and stay on budget + not mess with abunch of electrical stuff. Simple effective and workable solution. dont go on hating just cause 90% of the users moved on already.
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Old 08-21-2007, 10:21 PM   #38
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You couldn't be more wrong about me Richard.
Lots of things work. Not all of them are great ideas.

Advising someone who has no/little clue to just run an FMU and pump and make big boost is a recipe for a blown motor.

I ran an FMU and MSD for around 8k miles. It was a great set up. Had its problems, but made up for them with inherent simplicity and spades of reliablity. I would recommend the set up to anyone who wanted to make 150-175 hp on a super tight budget. You're telling this guy to run 250 and it's all good. Well it's not. He'll blow his motor.
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Old 08-21-2007, 10:37 PM   #39
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I said 250 is possible i doubt he has the clutch for more than 200. I was just pointing out how far the setuo has been taken. Either way we both agree it is better than that voodoo **** FM is trying to feed the newbs right
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Old 08-22-2007, 01:16 AM   #40
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Well... my clutch (once installed) will handle 250whp. But from what I am hearing the fmu isn't the best choice for that kind of power, but around 200whp instead. Or is your guy's debate going to keep on raging?

But that brings me to the question... soospecmx5 was running 194whp with his voodoo box, bipes, and stock injectors. So how is the voodoo that much worse than a fmu if they are capable of around the same kind of power (safely)? Plus the voodoo box comes with an o2 clamp, which compared to the :fmu, pump, olderguy o2 clamp, and mbc~$250 is the same price, so what makes the fmu that much better, other than upping the pressure instead of lengthening injector pulses. If anything the voodoo seems like the more adjustable unit.

Maybe if I read a bit more I can start to understand the f/ic and run that+460's. The reason that I am coming off so clueless (which I am) is because this is my first car, and my first time ever tuning anything. I am eager to learn, but I can only take in so much at a time. This forum is teaching me more than any other and I really appreciate all the help and info.
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