As some of you know, I am teaming up with someone to create www.digitalECMsystems.com , and our first product is a box that retards timing a certain amount based upon the boost. We are calling it a boost timing controller (BTC).

The good news is that tonight I ran 14 psi on 10:1 pistons on 91 octane with only 0.3 - 0.4 degrees of retard per lb of boost. With NO detonation, and EGT's a nice 1,500 degrees...

The bad news is my wastegate and BOV leak at high boost and all I can get is 12psi in first through fourth gear, and 14 psi in fifth gear. Getting rid of the 4lb wastegate spring for a stiffer spring will let me see if I can blow up at 17-18 psi ;)

The good news is the leaky wastegate and BOV give me overboost protection...

The bad news is that I am maxed out on my dual 480cc TB fuel injectors at over 75% duty cycle...

The good news is that is about 320-350hp at the crank...

The bad news is I still have a stock tranny...

The good news is the tranny didn't break again yet...

The bad news is I just bought an expensive TEC II with 550cc injectors last nioght, that I am likely NOT going to need after it gets here in three weeks...

The good news is I got such a good price on it that I might sell it for what I paid, or more, so I am still taking it...

The bad news is that if I don't go with the TEC II then I am stuck with a 6,200 rpm redline until we finish the fuel injector controller module as the next digitalECMsystems project (the mappable BTC and mappable EFI controller = basic ECU)...

The good news is I can always use the TEC II until our full ECU is done (with boost and knock control as well), and simply find other people to let us test our prototypes on their cars instead of mine (Do you hear me Brad and Dave?)...

The bad news is the money spent on the TEC II could have paid for a new half dogbox tranny and water injector to handle the 350hp more safely, or woukd have paid for a large inventory of the BTC's when they are done...

The good news is... I am happy either way! :D

Larry
www.ImprezaRS.com

Larry..
You are tooooooooo funny...:lol: :lol: :lol: :lol:
Congrats...Rich says he regrets not being able to use it...I was going to buy it before we have to find a house to buy..(wifes orders)..hehehehe but of course you know how that is...;)

Sweet deal. Need a beta tester? :)

BTW, you might want to watch what you're acronyming. IIRC, Jackson Racing has a unit called the BTC (Boost Timing Controller) as well. Though as I rcall, it's specifically set with the timing maps for Hondas, nothing else. Go to www.jacksonracing.com | Parts | Honda | 3rd item to the right. Just a heads up for a possible conflict.

No, Jackson Racing was calling it a BTM (boost timing module) last I checked, and I was calling mine a BTC since December when we started development.

I had no idea about their product until I read about the Supercharged Miata in SCC magazine a couple of months ago. Besides, my reference as BTC is about as generic as ECU or ECM or EFI.

I have a couple of people that will probably want to beta test this locally - we need to be able to tweak the hardware and software easily so local is better. I can also easily convert my car from TEC II to my old setup (for testing) and back, if I leave the SDSEFI and the JCS torque chip in place and simply reconnect the one wire that the TEC uses from the ECU, drop in the stock injectors and MAP sensor, and reconnect the coilpack and stock wires, etc...

We'll see. The whole project is so exciting, and works so well, that although I am still taking the TEC II, I may never use it!

Larry
www.ImprezaRS.com

Well, Jackson did indeed call it a BTC now, so now maybe we have to either call ours a BTM (which is what SCC called the JR BTC) or we argue the concept that generic acronyms can't be trademarked...

Larry

generic acronyms can't be trademarked

Absolutely right. "Boost Timing Controller" would never be approved by PTO. They're really very strict about descriptive trade names. You can guess how I'm so familiar with this issue. :rolleyes:

Jon Bogert
www.sportbuyer.com

The product is called the Boost Timing Master and is made by MSD. It has been around for years.

http://www.jegs.com/cgi-bin/ncommerce3/ProductDisplay?prrfnbr=26379&prmenbr=76&path=76%202379%202399%202400%202404

It does not work with distributorless ignitions, but they have incorporated this feature into thier distributorless ignition systems.

HOW MUCH $ ?

hmmm larry bought new a toy...

now every one know what comes next -->intake sale :) right?

so in referance to the btc ...
(1) boost
(2) RPM
(3) relative retard
(4) total retard

anyway to make it have a calibrated readout for the A/F sensor.
if your plugging into the harness it sould be easy

any chance it will be a full din sized componet ... so that a person could put it in a convient place.. like say the dash

I think I'm (4) Total Retard..... :o

...but my brother's (3) Relative Retard.

Mike.

Why can't you just stop spending G's on your car?

Some kind of weird addiction, eh?

5 words... Your wife would kill you. :o

Sounds fun, anyway.

Later,
Tom Richardson, Jr.
Mile High Motorsports

As you know, the MSD will not work with the Subaru's distributorless ignition, it requires an MSD ignition.

We don't have a final form factopr for this yet - we have to source out companies for the cases, switches, displays, and printed circuit boards. I am shooting for a controller module about the size of the Blitz SBC module, or a little bigger, that will fit in the space taken up by the ashtray. All you smokers can keep flickin' butts out the window. The designer is looking at something that would be either DIN size or take up the space in front of the shifter in the console (where I have the SDSEFI controller mounted).

Larry
www.ImprezaRS.com
www.SubaruPlanet.com

PS: The intake sale won't be done to support the TECII purchase, but to support a new tranny when this goes again ;)

MSD has a whole pile of new stuff out now. These include about 10 different boost vs timing controlers. I recall that one of them was specificly for DIS cars. I'll have to get my MSD cat. when I am back homeso I can get you specifics.

I think this device is going to be very Phat ;)

Larry

wow!!! this sounds really cool. cant wait to hear more about it.
for me this is beginning to sound like to perfect solution to running about 10 lbs of boost (off an intercooled T3/T4 hybrid) and a synchromesh tranny. maybe the only uprated internals will be a copper headgasket and low CR pistons.
big ? for you Larry. will this work on a MY98 Impreza RS?

thanks again...

Yes the full featured, extra injector setup sounds like the mutts nutts ;) Would be great to have an affordable, modular system designed specifically for our cars. You da man larry

Cheers dude:D

Boy, Larry, that sounds complicated.

What ever happened to a nice, cheap device that allows simple, adjustable, boost proportional ignition retard? I thought that's what you were developing.

Don't underestimate the demand for simple solutions that don't require mapping and programming. You've clearly gone over to the piggyback dark side, with additional injectors (and an appropriate fuel map to go with them) and now this!

The Vishnu TEC-II and other fully programmable solutions are clearly the "right" way to run high boost on a 2.5RS. Those of us in the lower classes want to run 5-6psi with as few headaches as possible. All I want is a very simple, very cheap, fully reversable little plug-in that retards the ingition about 1 degree for every lb of boost it sees and doesn't cause check engine lights.

Gee Larry, I didn't suggest that the MSD product was better than what you are making, but you were discussing getting a trademark for BTM and I pointed out that a similar product was out there.

Good luck, sounds like a neat product.

John - It will be simple, but offer more depth if you want it. It only goes between the crank/cam angle sensor wire to the ECU, with power and ground.

If you want, you can simply can simply set the boost slope to retard 1 degree per lb of boost or whatever you want - voila- done!

Without the big TB injectors and SDSEFI control unit, or the HIGH altitude, I wouldn't recommend playing with these levels of boost to anyone else.

rao - No, I am not wanting to get a trademark - I mentioned I thought it was too generic for a trademark. We are still calling it the digitalECMsystems Boost Timing Controller, or dECMs BTC.

I may never get to try that TECII. The scarifices we make...

Larry