Fast92RS

iTrader: (2)

Im looking at buying a Vortech supercharger kit for my 92 Camaro. As I said before Im building a ZZ4 350 with AFR 195 heads, TPIS ZZ9 cam , Superram intake and 24# ford motorsport injectors and the racetronix fuel pump kit with the walbro pump. The Vortech kit comes with a FMU and a aux. inline fuel pump. Do I need that FMU and inline pump with the racetronix kit I got? Or just the FMU? I have a adjustable FPR. Can I just upgrade to bigger injectors and also use the 749 ECU?
Also the kit comes with a MSD boost timming controler. Can I use this with the Accel 300+ ingnition I already have?

3.8TransAM

I'm not a fan of independent timing controls or fuel system crutches like FMU's.

It can be all be made to work, but has too many variables and the control is still rather crude.

Investigate doing a 749 Sy/Ty ecm swap.

I think you would be more pleased by the results going this route than you will be mish mashing aftermarket stuff and still not having as much control.

later
Jeremy

Fast92RS

iTrader: (2)

What size injectors would you recommend? Are you saying I shouldnt use the MSD boost timing control that comes in the kit? I guess I could program the retard into the ECU then.

Fast92RS

iTrader: (2)

After reading the sticky in the DIY Prom board the 749 ECU has the ability to control the timing and fuel requirements for boost application with out the use of the FMU and MSD boost timing box. The down fall is you loose EGR and AIR. Thats not a big deal but I would like to stay emissions legal.

Tony89GTA

iTrader: (7)

Just do the timing with the $58 code in the computer, no reason to run that other stuff plus that's extra work that is not needed.

As for what size injectors how much HP you planning to make with this cause 24Ibs would be to small I would think? I have FMS 42Ibs at the moment and from what I learned from other people there not the greatest at idle and my car does have a hunting idle of 300 RPM's but I have not done any real tunning to try to fix it yet. I'am thinking of going with 60Ibs motron injectors maybe after I get my AFR 195's on and ZZ9 cam in as well.

If you got the racetronix fuel pump kit I don't see why you would need to install the inline pump that comes with the vortec kit or FMU if you will be running the 749 computer, all extra fuel that your engine will need can just be programed in.

One key thing you might want to look into is some kind of WB02 setup that you can wire up to your computer and datalog it. I myself been using the DIY WB02, what you need to do a patch to your $58 Bin and then it will spit out the corrected AFR in the ALDL stream. I have recently installed a new type of WB02 from AEM that has a output that I can hook up to the computer the same as what my DIY WB02 setup did but this one is pretty cool since it is a 2 1/4 gauge pod type. Also Dig makes a $58 patch for that as well and he has a patch for most of the popular WB02 setups out there. Here is his site for it http://digware.lunarpages.com/digware/index.html

gcpoland

iTrader: (18)

I would use the FMU and ign box that comes with the kit to start. If you decide you like the SC then you can delve into custom tune chips and playing with code. The kit out of the box works great and will give you a chance to play before going through the steep learning curve of reprogramming chips. Not a fact just my opinion.

The MSD box in the kit would replace your Accel box and give you ign retard also.

Gary
Kingston,NH

Fast92RS

iTrader: (2)

I already started burning my own chips but I have a lot to learn still. This is what I was thinking as well. My thoughts was buying a bigger set of injectors and burn the chip to work with them plus I also have to make a tune that will work with the set up I will be installing. I would install the MSD box with the kit and just install the FMU without the aux inline fuel pump and see how everything works.

Tony89GTA

iTrader: (7)

Well your kind of screwed anyways since your changing the heads and cam so your going to end up burning new chips anyways if you want it to run half decent. If you know how to burn a chip what are you really accomplishing using that other stuff when it's a simple change in the chip. I had no problem just jumping in.

Guest

Running the FMU and MSD box at first is probably a good idea, get the car running right and later if you want you can ditch the FMU and MSD box. You need those unless you take control with the ecm though, a fuel pump and AFPR wont do a thing to handle your fuel needs under boost.