OK, I know that after installing a Downpipe, Cold Air Intake, Low Restriction Exhaust and Cat, that if you don't put the boost and fuel under control you'll be driving a timebomb. I plan on a little later on getting an AEM EMS, or something close, but for now, what is a low cost way of getting around it, even if its only for a few months?

 

Would a SAFC and a boost controller do the job? Again, for now I am trying to keep it low cost for now, but at the same time, not trying to blow up the engine to. If you have another suggestion that cost less I would like to know. I know that your are almost forced to do the ECU upgrade. Heck, you have to get rid of the stupid Pre-Cat, and the CAI prevents hot air from the engine bay getting sucked in and possibly cause detonation. Yes, I know you don't need to do the Low Restrict Cat and Muffler, but hey its easy power.

 

Solution: Buy the EMS first, and then upgrade the other items.

A Microtech LT8S is only $1075, which is about what you would spend on the intake and exhaust items you have already mentioned.
http://www.rx7store.net/index.asp?Pa...ROD&ProdID=791

BTW, a boost controller can raise boost, but can't lower it.

 

used pettit or M2 might be okay for now

 

manual boost controller set at 10psi and you'll be fine unless you can't keep it at that level

or a used M2 stage 3

 

could grab a megasqquirt system for like $200 if ya wanted to more of a pioneer type.

 

so what exactly is a meagsquirt? Is it pretty much like a SAFC? Also, how well will a boost controller word with the sequentials? will it help prevent a boost spike, and what range can I control the boost, Low to High (ie 4lbs - 12lbs). Thanks

 

i would recommend the lt8, but it seems that tuners in america dont really like it, which is going to be a problem

 

i'd get a megasquirt if u'r concered about money. its reletively easy to tune (or so i hear). all u need is a laptop

 

i dont see the year 7 you have but if you have a S4 digital tuning has a pretty good chip to upgrade your stock ecu if you do not want to spend allot of money. chip is called the R-tek 1.7 go to www.digitaltuning.com
lots of s4 guys here use this chip .

 

I think the problem with the megasquirt is that there is a lack of ignition control. At least for our Rotaries. That and I have not seen a lot of megasquirts of FD's? Is that just me, or is the FD its is harder to user a megasquirt? I read up a bit on there site, and it did catch my interest, but so far (maybe I haven't read enough into it yet) I have not seen an easy ignition control solution, please tell me if I am wrong.

 

I'm doing the megasquirt right now, with wideband O2 sensor.
And I will make it handle ignition, using a modified CAS and a GM HEI unit ($23)

Writeup (with lots of pictures) on the way.

 

Please let me know how that's going with the ignition control. It would be really cool to have it handle the spark

 

Check msefi.com - the current state of affairs is that "leading only" is currently easily doable; I've got about 6K miles on that so far. Programmable split trailing being worked on.

-Mike

 

you could plumb in a pop off valve set at 8 or 10 psi so that the engine will never exceed that pressure.

I love how people do things half-assed and backwards and can't figure out why things break. "hear me now and listen to me later" little Arnold for ya...

 

Does anyone have any idea about when the UltraMegaSquirt is going to be out. I heard it can do the trailing spark, but not sure when its going to be out

 

I know you're just kidding around, but that approach might overspin and severely shorten the life of your turbo(s). Pop-off valves are a failsafe (or boost-limit rules enforcement) device rather than a workable boost control strategy.

-Max

 

MegaSquirt 2 comes out in like, a week. MegaSquirt Spark n' Extra already has a trailing coil control coming out though.

 

The MegaSquirt 1 has leading only ignition control on a 20B with a modded CAS.

 

Sorry, should have said POV in combination with a properly set spring rate BOV...

 

How about a megasquirt 1 with a TII ecu? (for us boosted NA FC owners)

 

And you can always go EDIS. Trailing control for GM HEI almost out . . .

 

I was gonna say ask Jeff20B if you are interested in MegaSquirt. Alas, he beat me in posting.

 

My MegaSquirted 'Vert scheduled to start as soon as next wensday.

 

GM HEI? Huh? Trailing control of a stock trailing coil assembly with its required 'trigger' and 'select' signals is almost out. You can also try out the newer codes that allow for an unmodified CAS.

The thing I meant to say earlier about my setup is that there is no need for EDIS and all its paraphernalia these days. My 20B has the option of running as if it had an EDIS6 (no split) or leading only (with 0° and 180° sparks per rotor face @ 120° per rotor or one ignition event every 60°) with just a simple swap of a stock CAS to a modded one and some minor changes in the tuning software. Either way, it's more flexible than EDIS and easier to set up; no need to perfectly center a crank pulley and all that. Also no need for ford parts under the hood.