K&N 2780 with stock exhaust dyno

[Claviger]

Here are the results. If you don't do exhaust upgrades first, pod filters are garbage

Same dyno, same operator, very similar air conditions, same tune with 4%,added to the k&n tune across the board.

Blue is 100% stock and power trip tune
Red is stock except k&n 2780s and power trip tune +4% fuel

 

[1olbull]

I don't get your comment, "If you don't do exhaust pod filters are garbage." Could you explain?
The air/ fuel seems to be very poor to me. Mine is pretty much straight down the line.
Both the torque and HP also seem very uneven to me.
I am NO expert here and just learning, so no offense is intended.
Just sayin' . . .

 

[Claviger]

What I mean is, if you don't change the exhaust the triple filters are a big waste of time, and cost you a lot of bottom end torque with nothing returned up top because of the restriction of the stock exhaust.

They sound great, bike doesn't really feel much slower and I can still leave black stripes in 1st gear easily. Throttle response is still better than stock.

That dyno's o2 sensor seems to be very off. The other dyno I have had the bike on showed a much smoother AF curve. When I have made changes and redynod on this one they don't reflect in the o2 readings, so something is very wrong with their sensor.

Once my CES setup arrives I'll dyno it with the k&ns on and then with the stock intake setup.

 

[1olbull]

What I mean is, if you don't change the exhaust the triple filters are a big waste of time, and cost you a lot of bottom end torque with nothing returned up top because of the restriction of the stock exhaust.

They sound great, bike doesn't really feel much slower and I can still leave black stripes in 1st gear easily. Throttle response is still better than stock.

That dyno's o2 sensor seems to be very off. The other dyno I have had the bike on showed a much smoother AF curve. When I have made changes and redynod on this one they don't reflect in the o2 readings, so something is very wrong with their sensor.

Once my CES setup arrives I'll dyno it with the k&ns on and then with the stock intake setup.

Sounds good.
Keep us posted.

 

[Wrecka]

My reason for chnging to POD filter before exhaust mods was ease of access for maintenance, can easily sync throttle bodies and get to spark plugs now So not a total waste of time

 

[bruce aussie]

By those figures it looks like you've gone backwards. I have seen on here that Neville Lush got 20hp and about 20ftpd with Ramair and stock pipes compared to stock intake with stock pipes.

 

[Idaho Red Rocket 3]

Get a Dobeck Performance AFR Plus. It will boost power and smooth out that fuel line.

 

[Claviger]

So, I mentioned elsewhere but I guess ill put it here too for posterity sake.

The R3R_Slip tune has gawdawful timing tables, will never load it again. That is what causes the super wavy torque lines from 2k-4k.

That dyno shop has 100% ****e o2 sensors, not even close to accurate at all. Verified that today using my LM-2 and datalogging.

I'll be using a Innovative LM-2 logger to log all OBD parameters and a wideband, dobeck is inferior to tweaking the actual ecu values.