4+ year wait and it's almost running again.

[Dave R]

There are guys running the 75mm with 310's, 331's and 347's with varied results using the T6 housing.

I'll have to research the midframe 88mm some more.

[lafinrat]

I don't see a problem with running a .96 T4 frame on a hyd roller motor. I doubt you'll make power above 6500ish anyway. If you don't have at least 155# of seat pressure, you may be done before that.

Can you have the ex lobes reground on your cam?

[Dave R]

Alright,
I started wiring the BS3 and have a few questiions.

The MAP sensor...
It says to plug the hose into the intake for Alpha N and to leave it vent to atmosphere for SD. Is Alpha N another term for Mass Air or is it refering to reading intake pressures versus load or what?
Also, I have the green connector on it and it doesn't look to be cut or rewired. Does this mean the MAP I got with it is actually a 1 bar? He said it was a 3 bar and it looks like my 3 bar from the PMS.

The Cam and Crank sensor plugs....
Do I have to ground the eyelet terminals even though the sensor plugs aren't used?

The pink switched 12 volt wire.......
the instructions say to wire it to a 12 supplied wire in START. Thet tells me that it'll only have power while cranking and not while running. Does it mean connect to an ignition wire so it gets power on start and run positions or is it just for starting?

Electric fan.....
It says there is a single red wire for the fan relay. I don't see one anywhere. Is this an option or standard? I don't see one anywhere.

The TFI harness.......
The diagram shows the plug with the connector at the left. The top 3 pins are plain as day. The next one says to the +12vdc switch power in run and start and just under that it says, To negative coil lead or points input or ignition system. is the 4th pin for the +12 volts and the 5th pin for the negative coil? I have an MSD 6AL. The coil harness goes to the 2 sides of the coil . If I run the 5th pin to the negative side with the BS3 wire as well, will this be correct? Of course the tach is run off this as well.

The injector harness.......
I plugged injectors 1 and 8 in and of course 2 and 7 since they are Y'd off from those. 1 and 8 are the only plugs numbered. The rest have those 2 digit numbers on them. Do I need to worry about these and get them right or is this setup for bank to bank or batch injection?

It's all going in nicely. Not too much going on. I like the extra length battery wires so I can run them to my batttery in the back.


I asked a few turbo sellers what they recommend for my setup and intentions. We'll see what they recommend and charge for one.

Thanks for the help guys.

Oh, and I had the old version. I just downloaded the newest version dated Nov 24, 2006 and it seems to work fine with the .big file. I don't know if I have a valid com port until I get the unit fully wired in.

Dave

[Dave R]

I just found a few answers. I get the AlphaN and SD options now. I see I'm setup in the program to run SD as well as open loop.

Aaron,
Does this mean I'm not going to need the O2 sensor? I guess I don't need to worry about hooking up the MAP to the intake until I plan on running boost.

I think I have the TFI harness figured out. It's just a line spacing issue with the diagram but I still don't know if I should wire the coil wire straight to the same terminal as the BS3 coil wire? I have the MSD jumper harness and it's wired right. I just plug the 2 coil wires from the BS3 into my 2 old coil wires.

[lafinrat]

Alpha N is RPM and TPS only, no load input (MAP sensor). You don't want that. That's for big cam NA and N2O motors. You need SD.

If that MAP sensor will take the green connector, it is a 1 or 2 bar. 3 bar will only take orange conn.

Hook up all the grounds. Not needed to run, but just do it.

Pink must be hot in RUN and CRK.

Never seen a harness w/o the fan relay excite wire. Maybe the PO cut it.

TFI: The 5th pin goes to the white wire of your MSD (points input). 4th pin goes to same circuit as pink on BS3 (12v run/crk hot). DO NOT plug any coil straight into any of the pins on the BS3 HEI harness. Your coil will be hooked straight up to your MSD.

-------- added 3 Minutes and 50 Seconds later --------

Originally Posted by Dave R

Just got home from TDY in Cali. Today's the wife's birthday but this was sitting on the counter for me......


It came with an HP 1.83ghz laptop with XP installed and the BigComm software. I didn't expect to get the IAC with it but will not be using it as stated above.

Is there anything missing? I'm assuming the "BOOST" connector is for the MAP sensor and just needs to be rewired witht he right connector and configuration right?

Lafinrat, You up for tuning in a garage within the next few months?

Dave

I see the red fan relay wire and the red/white 2nd FP relay wire, I think.

The BOOST conn is not for the MAP sensor. The MAP sensor plug is for the MAP sensor. The BOOST connector is for PWM or staged boost control.

[Dave R]

The yellow wire has a factory tag that says 2-step on it.

I just looked at the relay and the fuses. None of them have an extra red wire coming off them. Everything goes into the harness and I don't see any exits anywhere. Where in the harness would it exit?

For the coil wires, I run the MSD interface plug for the TFI coil. It would normally plug in between the coil and the factory wires to the coil. It has splices to send the required signals to the box and then back to the coil through the splice. It was made to reroute the signal to the box. i should just be able to hook it up to the factory connector and the MSD plug will do its part. Sound like a plan???

I looked up some of the crank trigger setups. You spent more on your ignitions than your motors appearantly!!! Wow! I think I'll be sticking with the TFI for a while.

The guy said he had a 3 bar and was running a turbo setup on the car. I saw pics of the car with turbo and the BS3 installed. He was in the teens for boost level so it may just be a 2 bar. No biggie now but I'll need to fix that later.

So, I still electronically hook up the MAP but leave it to atmosphere?

Also, do I need to use the unit's WB02 if you have this setup for open loop? I understand the concept but don't know if it needs to even be connected then.

Did you mean to have the fan circuit on and off at 125* and 120*? If i can find a wire for the fan function and use it, I can ditch the Hayden dial control I use now. Less hardware and i can just run the wire to the trigger side of my fan relay.

Thanks
Dave

[lafinrat]

Make sure to hook up the yellow wire to the (+) side of you TB relay. The 2-step does NOT work with your ign setup, but the starting line timing will. And you'll need that with a turbo and auto.

The red wire comes right out of the header conn at the ECU. I see it in the pic, I swear I do.

Hook up the ign exactly like the manual and I have said to. Trigger your MSD off pin 5 of the TFI harness via the white "points" input of the box. Hook the coil up to the coil ouput on the MSD, orange and blk I believe. You need a seperate 2-step box too. I'd actually runa 3-step and hook the 3rd step to your brake lights.

You're missing something on the control logarithms. SD uses a MAP sensor for load input, so you need it hooked to the manifold. Alpha-N only uses TPS and RPM (no load input whatsoever). The "MAP" sensor would only be used for BARO compensation. SD control samples MAP KOEO for BARO compensation. You need SD.

Why wouldn't you just hook up the o2 sensor? It won't use it for feedback in open loop, but it would be nice to have for logging.

Is there a PN on your MAP sensor?

I don't have any money in my ign system. Even my spark plug wires are the OEM ones off the 5.3. I do have $2.00 ea NGK plugs though. That count? My buddies' cars have a few bucks in the ign system, hardly more than their motors though. Let's see Mark's Clevor was about $60,000. I haven't added up what my motor cost alone, but it was far less than that.

[Dave R]

Ahhhh! I thought you were running these MSD super computers yourself.

The red wire you see ( if you're looking at the one that's cut with tape at the end)is the red with white stripe wire that is the high side fuel pump. The other red wire is tied with the white wire for the ignition (unless that's not supposed to be).

I planned the 2 step connection to the brake relay already. I do have a separate 2 step box as well and was wondering how to do the wiring for the starting line load up. I got confused reading how one guy rigged it. I figure'd I'm pretty good with wiring and would give it a shot when i got it all running.

I think we're on the same page with the MSD hook up but just don't see the configurations personnaly. The MSD harness does all of that stuff so that i just take the wires from the box and plug them into this harness. I really could have made it if i would have known the order of the wires connections.

I'll go ahead and hook up the 02 sensor then. I just saw that you have the learning function off too. I take it you like total control too? If I had the knowledge and a dyno, I'd have went that way with the PMS but I have alot to learn.

I must have brain farted on the SD issue. On that note though, I'll hook up the line but, do I need to go into the hardware configuration and change the MAP to read 1 or 2 bar? You have it set at 3 right now.

[lafinrat]

When you get it hooked and communicating, you can tell which MAP sensor you have. The dash MAP reading should be -2.7 psi or about 80-82 kPa here in Cheyenne.

I have no idea whats going on with that MSD "twisted pair" harness that's patched into the red wire. I imagine the PO used it because it was lying around his garage, or something along those lines. The only solid red loose wire in that bulkhead is the fan relay control.

I've never used the learning or closed loop, or seen a need to. You could pioneer that if you want.

[Dave R]

Jesus! I just looked at the wire description and it doesn't say anything about a red wire for the ignition. It only has the one white points output wire! What a tard he was, and I am for trusting his work. I'm sure I would have caught it when I started to run those wires and considered connecting them. Maybe I need to get farther into it before I actually ask stupid questions.

I'm not even smart enough to set a computer up to run itself and I prooved that by not going to the stand a lone feature on the PMS. I still didn't get it to run perfect.

I'll stick to your method. It's really the most popular as I'm sure you know. I'm going status quo here.

Not that I need one but i don't see a green tach wire from the box anywhere.