Intresting that you have such a low centri like torque curve and number, hell even the HP is still climbing where they shut down the pull. Torque should probably be in 600 range, but nice any way. What pulley are you running? Stock lower?After 1 year of tinkering with a custom tune and the issues this blower seems to have in its stock form. Injector upgrades to 1050’s, fuel pump upgrades to a DW400 and the best shop/ tuner for Mustangs and Fords with out a doubt on the East coast (JDM ENGINEERING), finally, the car starts like a stock mustang with a great cold start and drives amazing never running out of fuel and continues to pull to the end. 710 wheel/ 525 tq Intentionally made “conservative” for 93 pump gas. Worth the wait and sacrifice of not being able to drive the car until it was properly dialed in and ready.
Why “should” Tq be in the 600 range to the wheel? Most whipple setups are below that number. Just so you know though my blower is more like a stage 1.5 with a 3.00in 6 rib pulley from a stage 1. A Stage 2 air box upgrade, 1050 injectors, and upgraded DW400 fuel pump due to the fact that the car was running out of fuel with the stock pump. So the tq is a little lower due to the fact that it is a stage 1 pulley set up. But none the less the tq is at a normal range for where the power is at imho. I get what you’re saying but like I said most whipple blowers have less Tq on an 18+.
You have a stage 2? Correct. You are making the tq you should with a stage 2 pulley and crank. The parts are different. I have a stage 1. I do not have any porting done to the blower. It’s useless and will do very Little for the power curve. Also your numbers are slightly inflated with your dyno sheet. Smoothing set to 4 instead of 5 on the SAE numbers. Your wheel hp is in the 600’s more than likely not the 700’s. The tq is lower too. Not that it’s much lower but it’s lower 1000%. So don’t think your tq is as high as you see. Smoothing 4 is making it less accurate. If you wanted a real number it’s SAE with smoothing set to 5. Which will Be the most accurate numbers possible. I now can’t compare because I don’t know what your car really makes vs mine In regards to power. Neither do you.
It is a stage 2 for what it's worth. I haven't read this discussion.let me send you what a stage one roush does.
this is @Roush05 2021 stage one he just bought and picked up a few weeks ago
I read back and I see. That is a funky looking torque curve. I wish it were plotted against RPM.
a Roush and Edelbrock really can’t be compared. Yes they both have Eaton blowers but it’s not always apples to apples.I do not have a stage 2 it is a 6 rib.... with the same parts as you save for the fact i'm running a 3.15" whereas you are running a 3.00".
my car still makes about 11lbs of boost on a pull according to my gauge.
let me send you what a stage one roush does.
this is @Roush05 2021 stage one he just bought and picked up a few weeks ago
smoothing does nothing but smooths the graph. EI it interpolates between two points to smooth the graph. Notice above it's SMOOTHER?
since he has a before and after you can likely make a couple of assumptions here it is a STD graph, which is likely a tad high. but notice the shape. it's very similar to mine big swell in tq before 5k and then it tapers off. That's a stock roush tune. I've seen sheets of a whipple non ported and ported. it takes off towards the top end compared to stock one. the shapes are definitely different.
Eddy current dynos have a brake on the drum, it is not an inertia dyno therefore the load is constant so it is not inflated: the reason it looks and acts the way that it does is because I'm spraying methanol, my KnockR is always around -6 and -8 with it turned on. without it on it is around -2 and 0 that would definitely put it in the 600s
There’s nothing wrong with the “shape”. Lol. Your Roush chart is just showing it differnt than my printout. Your tq range there looks as wacky vs the hp. and these graphs aren’t apples to apples. For example is your cold start Good. Is your drivability good. Is your mpg Good. Is your car actually putting that power down. Show me SAE with smoothing set to 5. I promise it dips 20-30hp and tq.
My chart actually looks really good. You want a linear hp curve and a torque curve that gives a quick snap up and then holds pretty flat across the RPM band. Your torque looks like a roller coaster. If I knew what the cause could be, I would try to help you.
