Search results

I was addressing californiacuda's question about calculating the volumetric-flow rate.

http://www.fordgtforum.com/forums/showpost.php?p=44803&postcount=16

If you know boost pressure, you can use this to get an estimate... http://www.modularfords.com/forums/2003-2004-mustang-cobra/volumetric-and-mass-air-flow-rate-calculator-for-a-4-stroke-ic-engine-64994.html You'll need to modify some of the variables, but hopefully they will be obvious. It can...

Nah. You pretty much have it. Spinning the blower faster (increasing boost pressure) forces in more air, (which also means more fuel as given by the AFR), and results in more power. Increasing the compression ratio increases the thermal-conversion efficiency, (not the amount of air and fuel)...

Hot damn! Hope someone picks one of these bad boys up! Can't wait to see the results!

Great stuff from James (RWTD), as always!! Thanks for chiming in, my friend!

Actually, what you’ll feel is the added torque. Torque at the flywheel is multiplied through the transmission and differential (by the overall gear ratio) to an even larger torque at the rear wheels, (rwTQ = fwTQ*GRtot). The torque at the rear wheels results in a force at the contact patch...

Great discussion! But for what it’s worth, maximum cylinder pressures occur at peak torque – not at peak power. (MEP = 4πTQ/Vd). From the dynograph, peak torque looks to be somewhere between 4.5 and 5 krpm…not at redline. Also, reducing the AFR doesn’t reduce the air charge temperatures...

That's cool. I understand. Perhaps you can give me the damping factors for the stockers, if you measure them? I agree about the tires! I don't suppose you know their compliance, LOL! And yes... N s/m are the units. Same thing as N/m/s, (Newtons per meter/sec). I just didn't write it as...

+2 on the rich AFR at high rpm for CAT protection. They do it on the SC'd 03 and 04 Cobras, as well. My dyno curves do have some wiggles with smoothing at zero as well, although not as great as yours shows. I can send you my files, if you like (since I don't have permission to post pictures...

Will they tell you what the damping factors are on these aftermarket pieces? (N/m/s or lb/in/s)

I guess I should have posted this question in this thread. Anyone know the damping factors of the stockers (N/m/s or lb/in/s)? Thanks.

And does anyone know the damping factors (N/m/s or lb/in/s) of the stock dampeners?

Gotcha...straight in! (I mistakenly thought it was similar to mine, which has a plenum between the TB and SC inlet.) Thanks again Jim.

So was this just the TB alone, or was the test done with the plenum on the back of it? If not, do you know any flow info about the plenum? Thanks for supplying the data! :cheers

Have any of you guys done any data logging on your cars? In addition to just the usual power/tq, I was looking for things like boost pressure, IAT1, IAT2, load, AFR, timing, etc, (preferably from the same pull). If anyone has, can you post it or send me a PM? I’m looking for info on a stock...

Ditto. I would like to know this, too. Can you post the number please along with the test conditions? Oh, and what is on the back of the TB when you do the test, or is it just the bare TB? Thanks!

Some info for you here: http://www.modularfords.com/forums/2003-2004-mustang-cobra/ford-gt-pump-info-look-inside-49292.html?

Can those of you posting power and torque gains from just a tune, could also please tell us your before and after AFR and total timing? Thanks in advance.

Then the GT stock filters aren't a restriction! Good info, (although sorry to hear it didn't help any after spending all the time and money. On my car the stock intake was really corked up!)