Miata Turbo Forum - Boost cars, acquire cats.

Miata Turbo Forum - Boost cars, acquire cats. (https://www.miataturbo.net/)
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UrbanSoot 08-27-2007 06:04 PM

fm iv will not fly :/
i talked to keith and he told me i wont be able to run more then 3-4psi with voodoo box / bipes setup :)

speedf50 08-27-2007 07:44 PM

You mean only with system (the IV)? Because I know that people have run much more than that with the voodoo bipes combo. But not specifically on that system. Why such low boost?

UrbanSoot 08-27-2007 07:58 PM

keith told me stock injectors wont do safely for more boost and that i cant replace injectors with voodoo box :/
although ive seen people run 305s with it and they claimed stoich @ idle. i dont know... :/

magnamx-5 08-27-2007 08:22 PM

300's should be no problem going higher is gonna suck though either way 10 psi properly tuned will max out the voodoo easy. Hell by 9 psi with the right IC'ing or WI will max out 305's.

speedf50 08-27-2007 08:25 PM

Wierd, did he say this just for the FM IV kit? I heard other people say that you could only run stockers, but then I asked fm and they said that you can run 305's b/c all the voodoo box does is lenthen pulses in boost. And I know that you can idle 305's on the stock ecu.

UrbanSoot 08-28-2007 12:31 PM

well... if someone buys my supercharger with voodoo box im going megasquirt again. now i will have to pocket out $300 for tuning :/

cjernigan 08-28-2007 12:33 PM

Street tuning would be enough for a long while. There are good timing maps for MS available for the 1.8 in turbo form and you can tune fuel with a wideband.

UrbanSoot 08-28-2007 01:34 PM

im just not too confident enough to tune megasquirt myself. i have never done tuning before so i dont even know where to start!

cjernigan 08-28-2007 01:47 PM

You take a datalog and let MLV make the adjustments for you. Or you use autotune in Megatune while you drive. It's not as hard as you think.

UrbanSoot 08-28-2007 01:59 PM

hehe, ok :)
now... what kind of injectors do i need to reach my goal of 240whp?
is it at all possible with my t25g setup? are there any better turbos to use on that manifold? i know that t25g is pretty limited. i never heard of anyone making more then 250whp on that turbo :/

UrbanSoot 08-28-2007 02:01 PM

oh... and im getting new wheels - 15x8 sportmax 002s silver. for dirt cheap. brand new. i can get a set for $340 if anyone is interested. falken azenis to go with them are $80/ea.

UrbanSoot 08-28-2007 03:50 PM

crap, i have to postpone this turbo build for few weeks :/
i just bought tein basic coilovers and tomei 2-way diff + those sportmax wheels and completely blew my budget :)

magnamx-5 08-28-2007 04:56 PM


Originally Posted by UrbanSoot (Post 144473)
crap, i have to postpone this turbo build for few weeks :/
i just bought tein basic coilovers and tomei 2-way diff + those sportmax wheels and completely blew my budget :)

whoops yeah that will happen :gay:

speedf50 08-28-2007 05:30 PM

Well if it's any consolation, my FM kit is taking its sweet time to get to me. I was hoping to get this done during the summer!:vash:

And it's too bad that your not using the voodoo box. It's so wierd how lots of people say that it sucks the most enormous balls, and others say that it is a great simple tuning solution. I mean, one guy is running 194whp on one with stock injectors, but I understand that it isn't an ideal final solution if you plan on making big power in the long run. With that said, I plan on going ms a little down the road as well to get to my goal of ~240whp(funny it's the same!), but like soot, I wanted to start with the simple voodoo box because I don't have the slightest clue how to tune an ecu and wouldn't know where to begin.

cjernigan 08-28-2007 05:40 PM

In the time you've been waiting you could have learned the basics of how to practically tune megasquirt.

UrbanSoot 08-28-2007 06:35 PM

haha... i skimmed through tons of info and thats what makes me scared of tuning. all the warnings everywhere make me very nervous - i dont want to spend another $3k on rebuild! (yeah, i would build my engine while its open)

UrbanSoot 08-28-2007 06:37 PM

but again... my supercharger is still on the car and it will be there for a week or 2 until i get a promised down payment for it :)
so 7.5psi jrsc + voodoo for now until i get my turbo situation sorted out.

in the meantime i will finish up my suspension, carpc, and crap like that. i still have to do a lot of interior work and fabrications so my carpc looks good :)

magnamx-5 08-28-2007 07:10 PM

Tunning is simple, i hate parts falling off :(

UrbanSoot 08-28-2007 08:04 PM

i would imagine :)

UrbanSoot 08-29-2007 07:18 PM

i just couldnt resist...

- turbo setup (turbo, intake, manifold, down pipe, intercooler, piping, blow-off, wastegate) without FMU and injectors
- oil catch can
- turbo timer
- steering wheel + quick-release hub
- carbon fiber fuel lid

$1650 shipped!!!!


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