My quarter mile and 0 to 60 time

[Muchmore]

The front hubs slipping across the splines is what causes the noise. You have likely damaged the locking hubs causing the vibration.

Hey sorry man but that's not true. The noise comes from the transfer case area as the coupler disengages or engages if you get a real quick loss of rear traction. It would be the same as saying, never push in the clutch under power, on a manual.

 

[TwizzleStix]

Hey sorry man but that's not true. The noise comes from the transfer case area as the coupler disengages or engages if you get a real quick loss of rear traction. It would be the same as saying, never push in the clutch under power, on a manual.

If that’s what you believe then there’s no more explaining I can do to help you. Oh well...

 

[Muchmore]

If that’s what you believe then there’s no more explaining I can do to help you. Oh well...

Like trying to take a manual out of gear under load, the front hubs will not unlock until they are without load. No amount of vacuum will move them under power the only thing we can do is release the front coupler, then, the hubs follow.

 

[Josh84]

My best 1/4 mile was 5.6 seconds. But i used a sun dial watch so it is more difficult to use.

 

[M3sparky]

My best 1/4 mile was 5.6 seconds. But i used a sun dial watch so it is more difficult to use.

u mean 0 to 60 ? lol

 

[Badgertits]

im curious to know if there are any other guys here that have done their qaurter mile testing either on the drag strip or using the draggy. i havent had a chance to take it to the drag strip yet. but from my experience the draggy is just as accurate. i have both mpt tunes and 5 star tunes, and even though the 5 star tune spikes up to 21.5 psi i have had slower perforance figures than mpt. and mpt never went past 19psi on the nguage device that i have noticed, but my fastest times were all under mpt e50 tune. thanks more power tuning!!!

On a 5600 lb vehicle equipped w/ all the electronic nannies & a 10 speed tranny, a lot of the actual tangible performance improvement from tuning comes by way of the tranny/TCM adjustments not the ECM/boost/AF adjustments.

MPT probably more aggressive overall in both categories, but regardless how much more Hp you’re making- if the tranny logic is reducing shift torque, skipping gears, shifting up too soon or not downshifting to the optimal starting gear from a WOT application, dialing in TQ mgmt between shift points, etc etc all that extra power doesn’t mean squat b/c it’s bottlenecking/being restricted by the tranny.

 

[xrocket21]

On a 5600 lb vehicle equipped w/ all the electronic nannies & a 10 speed tranny, a lot of the actual tangible performance improvement from tuning comes by way of the tranny/TCM adjustments not the ECM/boost/AF adjustments.

MPT probably more aggressive overall in both categories, but regardless how much more Hp you’re making- if the tranny logic is reducing shift torque, skipping gears, shifting up too soon or not downshifting to the optimal starting gear from a WOT application, dialing in TQ mgmt between shift points, etc etc all that extra power doesn’t mean squat b/c it’s bottlenecking/being restricted by the tranny.

where do you come up with this shit?

 

[Badgertits]

where do you come up with this shit?

HOW CAN YOU NOT UNDERSTAND HOW MUCH DIFFERENCE THE TRANSMISSION TUNING PLAYS INTO PERFORMANCE RESULTS?

Take 2 identical cars, 1 manual 1 auto. The auto will dyno lower due to parasitic loss, but will run quicker @ the track all else equal (1/4 mile straight line) than the manual car - even when the driver of the manual has a "perfect" launch.

"come up with this shit?" Never in my adult life modding vehicles have I ever encountered an ownership group/forum where members can be so super technical knowledgable while also having so many clueless people at the same time, never in my life have I ever considered/heard/paid any attention to a "tuner" that doesn't tune the transmission on an auto vehicle. I know that isn't the case w/ 5 star - my point simply being that seems like there are more similarities in the ECM tuning strategy across multiple tuners but theres a large disparity when it comces to the TCM tuning - Cobb obviously comes to mind weren't even selling TCM tuning until just recently. I don't need any test to know what the results would be if you put a Cobb ECM tuned only truck vs. a truck running pretty much ANY ECM tune + TCM tuning included would be.

So my guess is that there are some differences between both companies when it comes to their tranny tuning & - all else being equal it seems - that could account for the differences in performance results.

There's numerous other things that could come into play too of course, but coming from vehicles where transmission tuning made a HUGE difference in performance & seeing that TCM tuning seemed somewhat of an afterthought for the Raptor modding community until more recently (again - simply FLOORED anyone would've paid $100s for any tune that didn't touch the tranny- astonished really) & my guess is that could be a reason.....& it could be a good reason, these trucks make ALOT of TQ, especially after ECM tuning/boost increase - may be that having a more conservative tranny tuning approach is a better bet for long term reliability even if it equates to less than optimal 1/4 mile performance.

 

[WARP6]

I just got my '19 in October and was playing around with launch on the street. I figured 4A, sport mode would be the best setup then brake boost it.
I noticed the boost will barely come up, then hold in one spot. That's when I would let off the brake and accelerate. I'm curious if something is built-in to the tune to not allow the boost to climb while braking. My GN will build boost until it eventually overpowers the brakes.
Anyone got any input on this?

 

[Donmatteo]

Never in my adult life modding vehicles have I ever encountered an ownership group/forum where members can be so super technical knowledgable while also having so many clueless people at the same time,

It’s a Performance (your super technical knowledgeable people) and a Truck forum ( your clueless, mouth breathing, mullet wearing morons)

Don't let the trolls dissuade you from posting. Transmission tuning is important and anyone that works and knows how to tune cars know this.

Keep in mind this thread is about drag racing and trying to get a 0-60 time....on a truck...by someone that can’t spell “quarter” or know how to edit the title of the thread.

Not a lot of brain cells at work here.