[K9 JSB]

Hello guys,
First post incoming..

My new R7 (60th An) goes into PCR tuning in a few days for a tune to complement the full Akra and DNA intake.

What changes in characteristics can I expect and what power gains should I expect?

I’m more so interested in maximising a great power band rather than chasing BHP & tq figures, is this something I can request?

I hope this doesn’t make me sound like a “flip flops and tank top squid rider” but my bike pops and bangs a little when coming down the gears, which I LOVE. Will a tune remove this?

Cheers guys. Couple pics incoming

 

[nacler]

Had a power commander and tune done to mine following full exhaust install. It still bangs and pops . You should expect the same.

To really effect the power band I think you'll need an ECU flash.

 

[YamiRyder]

Hey @K9 JSB, are you planning to go with an ECU flash?

 

[Pocket-Rocket]

Welcome to the forum @K9 JSB! Gorgeous R7 you have. If you're going to get a power boost how much are you thinking of increasing it by?

 

[M.Hausknecht]

You may reasonably expect a 4-8 rear wheel maximum horsepower increase with a tune optimized for your exhaust and intake. Most of the increase in power will be above 6500. You'll also get better throttle response and smoother on/off response. The backfiring on deceleration is because the stock ecu cuts the fuel off when you close the throttle. Most informed tuners will add some fuel on deceleration which will reduce the on/off throttle abruptness and the engine braking, but you should still get some off throttle backfires, which you say you enjoy.

 

[K9 JSB]

Hey @K9 JSB, are you planning to go with an ECU flash?

I am indeed

Welcome to the forum @K9 JSB! Gorgeous R7 you have. If you're going to get a power boost how much are you thinking of increasing it by?

It’s said a stock R7 runs 72hp. It’d be nice to be in the 80s with the pipe, intake and tune. Although I’m more interested in improving the ride than chasing figures

You may reasonably expect a 4-8 rear wheel maximum horsepower increase with a tune optimized for your exhaust and intake. Most of the increase in power will be above 6500. You'll also get better throttle response and smoother on/off response. The backfiring on deceleration is because the stock ecu cuts the fuel off when you close the throttle. Most informed tuners will add some fuel on deceleration which will reduce the on/off throttle abruptness and the engine braking, but you should still get some off throttle backfires, which you say you enjoy.

The power being above 6500 is perfect as the CP2 engine is pure torque down low and runs out of puff quite early

This is where I’m heading tomorrow

Track Bike building | PCR Performance | England

PCR Performance is one of the UK's leading motorcycle performance centres. A home for Track Bikes.

www.pcr-performance.co.uk

Highly recommended by a few pals and fantastic reviews online. Anyone else have any experience with PCR?

 

[M.Hausknecht]

Here is a reputable dyno run with a stock R7 showing a smidgen over 66 rwhp:

D
Dynos don't all read the same, and an operator with an agenda can jiggle the variables to add or subtract the torque and horsepower shown. Because of this, if the amount of torque and horsepower gained is what matters to you, its important to do before and after runs using the same dyno, with the same settings. I'd expect somewhere around 72 honest rwhp with the DNA intake system and a well-engineered pipe on pump gas.

I note PCR uses both FTECU and Woolich ecu flashing systems. Be aware that the FTECU base ignition maps for the CP2 motor add a few to several degrees of ignition advance and they continue the disparity in fuel maps between the #1 and #2 cylinders (#1 is leaner). MotoAmerica racers here in the U.S. have destroyed #1 pistons using VP MGP spec-fuel with the FTECU base maps. It doesn't help that the stock plugs are "hot", so that reading them for mixture and spark advance is mostly a waste of time unless you're really far off.

 

[nacler]

It’s said a stock R7 runs 72hp. It’d be nice to be in the 80s with the pipe, intake and tune. Although I’m more interested in improving the ride than chasing figures

My stock R7 was running @ 64.17hp, this tested after an initial 600m break in period. Pretty big delta compared to manufacturer claim of 72.

@K9 JSB is that the ohlins YA585 you have installed? How do you like it?

 

[M.Hausknecht]

Yamaha's claim of 72 horsepower is at the crank, not the rear wheel.

 

[K9 JSB]

My stock R7 was running @ 64.17hp, this tested after an initial 600m break in period. Pretty big delta compared to manufacturer claim of 72.

Major lowball from what Yamaha state

@K9 JSB is that the ohlins YA585 you have installed? How do you like it?

No, no Ohlins. Just stock

 

[K9 JSB]

Really happy with the low speed power delivery, no herky jerky business anymore. Pulls a lot smoother.

I’d also like to point out that PCR adjusted my suspension and the bike feels SO much more lighter on its toes. They also installed my ASV levers, all for the price of the tune alone.
The guys at PCR really didn’t want me to leave without squaring my bike away, really great guys.

 

[nacler]

View attachment 1674

Mine only eeked out 65.4 post tune, I wonder if the intake you ran made up the difference (im still on stock filter).

 

[M.Hausknecht]

Mine only eeked out 65.4 post tune, I wonder if the intake you ran made up the difference (im still on stock filter).

The filter doesn't matter but removing the snorkle from the airbox matters; but not as much as installing a well-engineered intake system like the Hordpower airbox. The stock airbox and snorkle really limit power from 6500rpm up. But plus or minus 2 horsepower can be attributed to measuring variances between dynos.

 

[K9 JSB]

The filter doesn't matter but removing the snorkle from the airbox matters; but not as much as installing a well-engineered intake system like the Hordpower airbox. The stock airbox and snorkle really limit power from 6500rpm up. But plus or minus 2 horsepower can be attributed to measuring variances between dynos.

Comparing the stock filter to the DNA stage 2 filter, I’d struggle to believe the intake doesn’t matter. The difference between the air filter opening and filter material itself is massive

 

[M.Hausknecht]

Comparing the stock filter to the DNA stage 2 filter, I’d struggle to believe the intake doesn’t matter. The difference between the air filter opening and filter material itself is massive

The DNA cover flows a little better than the stock airbox with the snorkel removed, but the filter material itself doesn't matter and you're still using the very long stock intake tubes which contribute significantly to the torque fall off after 7000 rpm.

 

[Ei900]

Question; will I need to change my air intake if I go with the Akra full system? I am planning on getting that before next season starts. I know I will need a power commander as well. I'm just looking to make the bike sound nicer, extra power isnt a priority.

Bike looks great!

 

[M.Hausknecht]

No, you don't need to change the intake to change the exhaust. The existing intake system (airbox, snorkle, intake tubes) contributes to the CP2's much-loved low end torque and power, while decreasing intake noise sufficiently to satisfy noise limits. If you don't mind a louder bike and want more power above 6500-7000 rpm, replacing the stock intake system with a shorter and freer-flowing option will, if you adjust the fuel mapping, get you more power.

I'd stay away from the Power Commander. If all you intend to change is the exhaust and add a DNA filter or a Hordpower airbox, you're better off with an ecu flash. See, Power Commander vs. ECU flash: Which is better for tuning your motorcycle? - RevZilla, and Power Commander vs. Bazzaz vs. ECU Flash vs. aRacer Race ECU.

 

[K9 JSB]

No, you don't need to change the intake to change the exhaust. The existing intake system (airbox, snorkle, intake tubes) contributes to the CP2's much-loved low end torque and power, while decreasing intake noise sufficiently to satisfy noise limits. If you don't mind a louder bike and want more power above 6500-7000 rpm, replacing the stock intake system with a shorter and freer-flowing option will, if you adjust the fuel mapping, get you more power.

I'd stay away from the Power Commander. If all you intend to change is the exhaust and add a DNA filter or a Hordpower airbox, you're better off with an ecu flash. See, Power Commander vs. ECU flash: Which is better for tuning your motorcycle? - RevZilla, and Power Commander vs. Bazzaz vs. ECU Flash vs. aRacer Race ECU.

+1 ECU Flash 👍🏽👍🏽