SPD installed. Noticable difference.

[xxaarraa]

Bullishone, I follow your build and I know you are pretty legit. But this thread is yet another butt dyno praise for the adapters with no accompanying real dyno results.

Sometimes butt feel is all that is needed to justify a purchase. I get that. Pedal Commander belongs in that bucket. Without any real proof, I'm inclined to park the turbo adapters in the same category.

 

[byz250f]

---------- Post added at 10:44 AM ---------- Previous post was at 10:42 AM ----------

That was from the 2017+ Gen 2 raptor discussions. The guy did a before and after on same dyno, same day. It shows an increase at WOT above 2700rpms. Below that there is a big dip in HP and TQ vs stock.

Personally until I race a SPD adapter truck with same configuration as mine and it is faster I will not believe these make a difference.

 

[shelteredraptor]

dyno sheet where the dude on FB did a before and after the same day/same dyno and it showed a clear drop in tq and hp below 2700rpms
These are obviously an improvement in design over stock adapters. The stock turbos might not need any more flow than what is already there, so these could be a waste.

 

[df4801]

What about voiding the warranty??? And to maybe gain 20hp?

Is that not a concern, ESPECIALLY with a new engine?

 

[smurfslayer]

Is it me, or did the 2nd run start a few hundred rpms later?

 

[guernsej]

Is it me, or did the 2nd run start a few hundred rpms later?

Yea, I don't think this shows a drop under 2700 at all - he just started WOT at a higher rpm for that pull.

 

[Rango]

Who ya going to believe, "feel" or some lying Dyno ?

 

[Dartv8r]

There is almost a 150 ft-lb of torque drop at 2500 rpm. That is not good. These parts are cool and all but to just slap these parts on without re-configuring/retuning the ECM to utilize them is useless and as you can see will result in power loss at certain RPMs. For most of that graph there is maybe a 10-15 hp increase. The peak delta comes at the end. I doubt anyone notices this increase on such a large truck.

 

[smurfslayer]

There is almost a 150 ft-lb of torque drop at 2500 rpm. That is not good. These parts are cool and all but to just slap these parts on without re-configuring/retuning the ECM to utilize them is useless and as you can see will result in power loss at certain RPMs. For most of that graph there is maybe a 10-15 hp increase. The peak delta comes at the end. I doubt anyone notices this increase on such a large truck.

The 2nd run doesn’t start until 2400 rpms so it’s not an equal comparison. If you look at the graph, it’s pretty linear in the representation of increase, with the 2nd graph being a little more smooth, albeit later.

The SPD’s could cost low end hp / tq, but not 150 pound feet. They also might increase power, or remain the same. Regardless, all we have here with the one existing graph comparison is a data point.

Also, as has previously been noted, the scientific value of the butt dyno is about the same value as Al Gore’s climate premonitions. Fantasy. Often when something “feels” faster it’s because of a dip in the power curve.

 

[guernsej]

Also, peak hp is at 5k so stopping the pull at 4250 makes no sense if they're trying to determine hp gain. This dyno is odd.