I was very interested in this when the topic first came up, but after seeing the results, I'm not interested in reducing overall power output across the rev range (area under the curve). If it was just a shift in powerband and no loss, then it's a different conversation.yeah, everyone who wants low end power should buy a pickup
Are we looking at the same graphs? Because I think you need to look again. The F150 manifold makes the same or more power literally everywhere until they cross at ~6300 RPM. If you consider from 6300-7000 to be "under the curve" then I guess we have some very different definitions.I was very interested in this when the topic first came up, but after seeing the results, I'm not interested in reducing overall power output across the rev range (area under the curve). If it was just a shift in powerband and no loss, then it's a different conversation.
Re-read post #105Are we looking at the same graphs? Because I think you need to look again. The F150 manifold makes the same or more power literally everywhere until they cross at ~6300 RPM. If you consider from 6300-7000 to be "under the curve" then I guess we have some very different definitions.
Again, if you're saying "under the curve" is past 6500 RPM you need to reconsider your definitions of the term. Don't you have some more threads to crap in about not living at the redline?Re-read post #105
Re-read Post #105Again, if you're saying "under the curve" is past 6500 RPM you need to reconsider your definitions of the term. Don't you have some more threads to crap in about not living at the redline?
Wondering if the new IM would benefit from an new tune. I see what you did; however, the tune is optimized for a different IM. I am now curious about this.So, ran tonight with the F150 IM. Ran at first with same tune I had with stock intake. It’s a Rob Shoemaker Flex Fuel tune and I have a PMAS as far as performance mods go. Ran with M/T ET R drag radials. With stock intake I ran a few weeks ago with DAs about 2300 and tonight with DAs about 1050 with the F150 IM. With stock IM, ran 7.99 @ 92. Tonight I ran 7.98 @ 92. Earth shattering results! LOL. Stock IM may have run slightly quicker with these DAs but that is just speculation. Car runs strong. I tried a tune that shifted 300 RPM quicker just to see if it would help or hurt times. With that tune, ran 8.08 @ 89. MPH definitely took a hit. Not sure if car needed time to adjust to that tune or not. Reloaded previous tune and MPH immediately went back to 92. So, take from that what you will. Just one person’s unscientific test. I would like to run again before season is done but I’m not sure if that will happen. Take that info and process it as you see fit.
Doing a DA correction on both it looks like the F150 manifold is about 0.1 seconds slower in the 1/8th...and that will likely translate to 0.2 to 0.3 seconds in the 1/4 mile.So, ran tonight with the F150 IM. Ran at first with same tune I had with stock intake. It’s a Rob Shoemaker Flex Fuel tune and I have a PMAS as far as performance mods go. Ran with M/T ET R drag radials. With stock intake I ran a few weeks ago with DAs about 2300 and tonight with DAs about 1050 with the F150 IM. With stock IM, ran 7.99 @ 92. Tonight I ran 7.98 @ 92. Earth shattering results! LOL. Stock IM may have run slightly quicker with these DAs but that is just speculation. Car runs strong. I tried a tune that shifted 300 RPM quicker just to see if it would help or hurt times. With that tune, ran 8.08 @ 89. MPH definitely took a hit. Not sure if car needed time to adjust to that tune or not. Reloaded previous tune and MPH immediately went back to 92. So, take from that what you will. Just one person’s unscientific test. I would like to run again before season is done but I’m not sure if that will happen. Take that info and process it as you see fit.
You aren't understanding the loss here. Take a look at the image below. I have shifted the F150 manifold up by 500 RPM to compare the two curves. The area in orange is what you are losing. The GT manifold produces far more horsepower under the curve...everywhere. Yes, the F150 shows more power at lower RPM, but that doesn't mean it's producing more power.Are we looking at the same graphs? Because I think you need to look again. The F150 manifold makes the same or more power literally everywhere until they cross at ~6300 RPM. If you consider from 6300-7000 to be "under the curve" then I guess we have some very different definitions.
It is weird that your factory Ford PP2 tune (on the PP2 kit) looks as horrible as it does with all of the torque drop-outs and the jump in power near redline.Ah yes that I also found weird and can agree on in terms of the weird drop. However once again the fact it doesn't show in the stock or F150 manifold makes me lean toward the tune. At best maybe some freak weird incident happened. However without more PP2 dynos running around or without another run things are simply inconclusive.
His pull is a lot smoother, normal looking and does not have the torque drop-out at 3,700RPM, does not have the 'flat' power curve from 5,500-6,100RPM, or the aggressive HP jump at 6,300RPM that yours has:Had my car with the PP2 dyno'd today.
405 hp / 366 lb-ft on a Mustang Dyno.