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June 16, 2009 6:18 a.m. 93celicaGT2 Dork

daytonaer wrote:

93celicaGT2 wrote:

problemaddict wrote:

As for the boost cut, the chip also smooths the fuel and timing maps in addition, it's an EPROM chip.

I'll look into the FMU, though....

The forum guys when they max out the stock injectors like to do a 5th injector setup, and i'm not too cool on that. And with my larger turbo, i imagine i'd max out the stockers real quick if i tried to source those, too. I just want to effectively use the 440s that are in there. The extra 110cc can't be THAT bad, can it?

I'm not sure I follow you, nor do I Know that much about Mazda pre OBDII stuff, but you said it has a custom burned EPROM?? Is that the EPROM in the ecm?

If so, you should probably be able to modify the tune yourself with the help of a chip burner (50-100 + a "few" hours of learn time). You could scale the tune for larger injectors and (guessing here as its an AFM) scale back fueling under light load. You will want to datalog with your wideband before you change anything so you'll know where to start.

If your still running the stock intercooler, upgrade. That thing is tiny. I have one in my garage.

If you can't burn a PROM yourself and don't want to step up to MS yet, what about progressive controlled alcohol injection? There are some pretty slick setups for reasonable amounts of money.

It's an EPROM ecu, i can buy the "Probinator" chip which gets rave reviews for $35.

I should do more research into the chips.... i have a smattering of experience with Crome in Hondas, and don't think it would take me long to get a better tune accounting for injectors if i could somehow use Crome to tune.

It has a nice beefy aftermarket fmic. :)
June 16, 2009 6:21 a.m. 93celicaGT2 Dork

Strizzo wrote:

93celicaGT2 wrote:

Strizzo wrote:

Last I heard, nobody had been able to get the safc to work on the 1gens. The chip adjusts the fueling towork with the tbird turbo hybrid where you put the comp wheel and housing on the stock exh/center section.

Ahh.... ok. So SAFC = no go probably.

I don't think i understood what you were talking about with the chip, though.... assuming we're talking about the same chip, people use them on stock turbos, and i have neither the stocker or the Tbird hybrid, running on stock ECU w/ 440s. I'm pretty sure mine is bigger than either, attached to a 3.0 litre engine stock.

i assumed you were talking about the zombie chip which is really optimized for the tbird turbo and adds timing and pulls some fuel around where the turbo would normally spool. the stock tuning pulls a lot of timing and adds a bunch of fuel in that spot for safety.

i know people run the zombie with the stock turbo, because it lets them run more than 12psi without hitting cut. supposedly the stock injectors are 330cc/min, which should be ok up to 200 hp with a walbro 190 pump. if you keep an eye on everything with a wideband, you should be ok.

a popular thing to do is to swap in an fe3 from the kia sportage. supposedly some of them came stock with about 170hp, then they put ms and a turbo on it for around 250-300hp.

The Zombie Chip isn't in production anymore, and the creator of the chip himself said that the Probe chip was fine. The stock ECU seems to have adapted fine to the much larger turbo, one of the few things i DO like about an AFM. The 10psi boost cut is a little depressing though.

I think i'm going to wait til my wideband and Probinator chip come in, and see where i stand in terms of AFRs at 14-15psi. From what other people are putting down there on stock turbo, i think i'd be sitting at 250-260whp, and at least that much torque, if not more. I think it's just under 200whp on the "butt dyno" (totally accurate, i swear!) at only 7psi, so 14psi should be a hoot.
June 16, 2009 6:21 a.m. 93celicaGT2 Dork

pres589 wrote:

FE3 from a Sportage + an appropriate turbo + a bunch of Megasquirt madness = a great transplant into a 2nd gen convertible RX-7, right? RIGHT?

DEFINITELY. I support this message.
June 16, 2009 9:04 a.m. pres589 New Reader

I'll say this again, just to dampen your spirits early, but I don't think the transmission is going to enjoy power outputs in the 250+ wheel HP range, never mind the torque it will be seeing at that point.

If it was my DD I don't think I'd be spending a lot of time trying to find more power than what it already has. Just saying.
June 16, 2009 9:12 a.m. Strizzo Dork

The boost cut is actually an airflow cut. When the arm goes over a certain voltage, fuel/spark get cut.

The trans is actually pretty tough. Supposedly it's the "G" box while the "H" box is what the nonturbo 6 and protégée got. Iirc, you can fix the 5th gear parts without pulling the motor/trans
June 16, 2009 10:33 a.m. 93celicaGT2 Dork

pres589 wrote:

I'll say this again, just to dampen your spirits early, but I don't think the transmission is going to enjoy power outputs in the 250+ wheel HP range, never mind the torque it will be seeing at that point.

If it was my DD I don't think I'd be spending a lot of time trying to find more power than what it already has. Just saying.

I'm more trying to lean it out. If i gain power in the process, great!

The transmission will be fine.... it's a very robust unit, upgraded specifically for this motor, there are numerous accounts of people running them through 11 second passes with no issues. Not like i'm going to be launching the thing.
June 16, 2009 3:04 p.m. MadScientistMatt HalfDork

pres589 wrote: I've never laid hands on a Miata but the engine in his MX6 uses a lot of Mitsubishi sensors and is of a different family entirely.

Could be a nice chance to get a hot wire style mass airflow sensor in there and away from the flapping door sensor that's in there from the factory.

Actually, the Miata uses a lot of Mitsubishi sensors, the first gen MX6 uses a Nippondenso distributor very similar to a Honda motor except with no TDC sensor. The closest related ECU seems to be some Toyotas. We have a guide on our website to later MX6s with the V6, but unfortunately their engine management has nothing in common with the first generation.

There is a write up where a guy filed a couple teeth off his distributor to put MegaSquirt on a first gen MX6 here:

http://www.mx6.com/forums/1g-mx6-forced-induction/221182-how-megasquirt-your-1st-g...

Not quite as much documentation and info about it as some other cars - the Miata is one of the best documented MegaSquirt installs out there, but unfortunately nothing crosses over to the MX6.
June 17, 2009 10:03 a.m. 93celicaGT2 Dork

Well, i drove it back yesterday. It seems to be getting OK gas mileage, nothing special. I've put about 175 miles on half a tank so far.

I'm really debating now how far i really want to go with it. The more i drive it, the faster it gets. The PO babied it, and i think i'm clearing gunk out of it, or i was just way easier on it at first, or i don't know. What i DID find was that the floor mat was bunched up under the gas pedal, keeping me from really hitting 100% throttle. Well, i fixed that.

And now, only on 7psi, traction at WOT in 3rd gear is pretty hit or miss. And it's got new tires. So i'm re-thinking the chip and up the boost to 14-15psi idea, considering that when it let go last night at about 50mph merging onto the highway i got the poop scared out of me.

I will revisit this thread when i install the wideband.

At least the previous owner was nice enough to weld a nice high quality bung into what little exhaust it has for an easy install.

I appreciate all the help.
June 19, 2009 9:28 a.m. problemaddict Reader

Just to clarify, the RRG-FPR is adjustable. You can adjust the rate of fuel pressure gain from 1:1 to 1:7 ratios with an adjustable base pressure. So for every psi of boost, the fuel pressure will rise 7psi, or wherever you set it. So if you're really scared of 1s and 0s, this may be the way to go. Either way, you're looking at a good deal of tuning time...

http://www.vortechsuperchargers.com/product.php?p=30
June 19, 2009 9:42 a.m. 93celicaGT2 Dork

problemaddict wrote:

Just to clarify, the RRG-FPR is adjustable. You can adjust the rate of fuel pressure gain from 1:1 to 1:7 ratios with an adjustable base pressure. So for every psi of boost, the fuel pressure will rise 7psi, or wherever you set it. So if you're really scared of 1s and 0s, this may be the way to go. Either way, you're looking at a good deal of tuning time...

http://www.vortechsuperchargers.com/product.php?p=30

Can i adjust it to LESS than stock? I'm blowing fireballs all over the place and i think i'm on my way to fouling my plugs.

Turns out the VAF gives weird readings that an SAFC doesn't like, anyways, so there goes that idea. And yes... i'm VERY afraid of MS. I'd try it on the Celica, but not this.

Thanks for the link! I saved it, and will probably end up getting either this or the Aeromotive FPR setup. This, wideband, and a boost controller seems like it should put me in good hands.
June 19, 2009 5:33 p.m. problemaddict Reader

93celicaGT2 wrote:

Can i adjust it to LESS than stock?

Yep.

Google "Super fuel management unit" or "Super FMU" and you'll find a bunch of forum posts on using this thing on lots of different vehicles/applilcations. I've never used one, so i can't really help you with much specifics.
June 19, 2009 7:54 p.m. 93celicaGT2 Dork

I appreciate it.

Has to be put on temporary hold while i figure something else out. New thread to follow.