Interest in Supercharger setup

[warmonger]

Originally Posted by Blackcoog

Hey, I just curious what people were thinking.

Here are the numbers:

Max Power: 325.45 hp
Max TQ: 277.71 tq

The MAF pegged 5V at 5700rpms so the computer tries to force the last known value but since more air is coming in it leans out slightly. With a larger MAF we should be able to squeeze a bit more out up top if we run it to redline. You can see we stopped short at 6500 because it was starting to lean out. I'm not sure what standard most people use but these are SAE numbers. The tuner said normally down south they use STD which bumps things up a bit more.

Here is the sheet:

First off, nice numbers. I'm sure you are running more than 6psi now, that is more like 10psi boost! The real congratulations are in the design of your pulley system though! Congrats on a working design.

Also, how did you measure maf voltage? Did you use MAF counts and interpolate it or actually measure it with an external instrument?

I disagree that adding more fuel up top will add power. In fact I think it will only cool down the combustion temps a bit and maybe add a bit more protection for higher rpm usage. 12.2:1 is very efficient and will not cause a power loss.
Remember that airflow on this engine is most efficient in the 5000-5800 range using SVT cams and duratec intakes. The airflow rate is going to drop once you passed your torque peak of around ~5500rpm. If boost pressure remains relatively constant then you will continue to drop airflow going into the engine proportionately with rpm. So the airflow into the engine may still be increasing but it will do so at a much lower rate and therefore the Load on the engine will go down as you pass your peak efficiency point. You can probably check this with a graph of load on your xcal2.
If your load is sloping off or going down then your airflow rate is decreasing and you can be fairly confident it has nothing to do with fuel. If your load graph is flat or increasing then you are getting sufficient airflow and I would maybe then agree that fuel and/or timing may need to be changed to take better advantage of it.
Also, that lower airflow means that the MAF may not actually be pegged once you get on the downslope of 6000rpm.
So it may be that you hit the natural decline in breathing efficiency of the intake/filter system, or cams/intakes at this point and your airflow numbers just dropped or at least leveled out with respect to the rpm range. I'm under the impression that you are not maxing out the vortec head unit when I make those assumptions.

You should check this against your datalog to see what the maf counts were at 6000 and 6500 rpm. In fact I'd like to see that myself.

[AndyMan]

wow... i am going to want this SC setup by the end of next year blackcoug ...

BUT.. having a 01 system,.. i belive i am going to have fuel issues..
althought i got the 99 timing cover on,.. 42lbs RETURNLESS will not come easy to find

[Alkatraz]

i have an early 99 ATX with only about 10K on the new tranny and i'm lookin for about 250 hp then when i get my money's worth our of the tranny and it dies i will do a tranny swap

[wadespencer99]

Originally Posted by AndyMan

wow... i am going to want this SC setup by the end of next year blackcoug ...

BUT.. having a 01 system,.. i belive i am going to have fuel issues..
althought i got the 99 timing cover on,.. 42lbs RETURNLESS will not come easy to find

SVT Lightning?

[BigBalledOX]

Originally Posted by Blackcoog

Here are the numbers:

Max Power: 325.45 hp
Max TQ: 277.71 tq

Holy . . . I mean . . . sweet mother of god . . . can I send a deposit like, tomorrow? FYI I have a six-foot erection with a giant Vortec head unit on the end . . .

[PREDATOR]

Congratulations! Might as well put this thing on the Coug with the ATX, then when the tranny blows I'll swap in an MTX

[warmonger]

Originally Posted by Alkatraz

i have an early 99 ATX with only about 10K on the new tranny and i'm lookin for about 250 hp then when i get my money's worth our of the tranny and it dies i will do a tranny swap

I agree! I'd love to see what this kit will do for the ATX powered contour/cougars.

[FastCougar]

With a built trans and a cooler, I think the ATX would take it in stride

[Blackcoog]

Originally Posted by warmonger

First off, nice numbers. I'm sure you are running more than 6psi now, that is more like 10psi boost! The real congratulations are in the design of your pulley system though! Congrats on a working design.

Also, how did you measure maf voltage? Did you use MAF counts and interpolate it or actually measure it with an external instrument?

Thanks it's been a long process.

As for the MAF voltage we were using a ford scanning tool that the Ford techs use. It plugs into the OBD port and it's a huge hand held instrument. As far as I know the MAF was pegged at 5V on up but I don't have the data in front of me to verify. If that's the case then the ECU will should use the last known values which is probably the case. That would make sense as it starts to lean out the higher we go up basically because the MAF isn't reading the extra air coming in.

[Jorgen]

Jebus that is a ton of power man. Congrats.