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Yamaha XV950 Bolt & SCR950 Page



ECU Re-Flash - Available Now !!
Ivan's®  ECU flash for:
2014 - 2019 Bolt XV 950
- $350.00
2017 - 2018 SCR950
- $350.00

When sending your ECU, please print and fill out

I will contact you for your payment after I receive your ECU.

Testimonials can be found on THIS PAGE

My ECU tuning philosophy can be found on this page: ECU PAGE

My XV950 Bolt ECU programming (Re-Flash) includes the following:
Fuel Tuner no longer needed... Reprogramming now includes fueling changes.

1) Fix all inherent fueling problems inside the ECU.
(the ones that cannot be fixed with an external fuel tuner)

2) Disable fuel cut - ie; Jerky throttle
Don't know what "fuel cut" is? - CLICK HERE

a) Gets rid of poor throttle transitions from closed throttle.
b) Gets rid of annoying popping and banging during decel and also when re-applying the throttle from closed.
c) Throttle modulation is noticably improved over what can be achieved with a fuel tuner alone.
d) Throttle feels much smoother when re-applying from closed position.

3) Complete re-curve of ignition timing
a) Gets rid of part throttle timing retarder for more response and less vibration when cruising and moderate acceleration.
b) Gets rid of high rpm timing retarder allowing the engine to make maximum power for longer.
c) Set timing for maximium power and driveability across the entire rpm range & all throttle positions
d) Adjust timing to be the same for all gears.

4) Raise rev-limit in all gears to 7100 rpm


5) Anything that compromises performance and/or driveability is eliminated.

6) Reduced running temperatures.

7) Reduced heavy engine braking on decel.
   (More relaxed gear changes and throttle modulation at all speeds)

8) Free upgrades when/if we make improvements.

9) Return your ecu back to stock at no charge for any reason.
    (shipping not included)

10) Answers to all your questions.....

All testing was done in house on our own 2014 XV950 Bolt.

We can reprogram for the following markets:

USA, Canada & Australia
European customers for this model can contact our European partner here:

ECU reprogramming may not comply with federal safety/emission laws
ECU reprogramming may not comply with your warranty


Our Performance Package for this model includes: (you need to call for pricing)

Slip-on or Full exhaust system - Call for pricing.

Reprogramming of your ECU
(Fuel Tuner no longer needed... Reprogramming now includes fueling changes)

Air filter kit of your choice

Also included with purchases from us:

Un-paralleled tech support

Answers to all your questions.....

See Dyno Charts Below
Remember that these are only full throttle tests and do not reflect any driveability improvements


This bike is very restricted in "as delivered" condition
This chart shows the ECU power restrictions removed without any fueling corrections

With fueling corrections added & ECU flash, the gains are even more significant

After seeing the above charts,
This is why a fuel tuner alone cannot offer what is needed to make this bike perform correctly

The stock ECU is too restricted for fuel adjustments alone to correct it's problems



Un-restricted ECU w/corrected fuel vs. stock ECU w/corrected fuel
Stock intake and stock exhaust for these tests

Exhaust & intake tests

The airbox is very restrictive on the Bolt (8-9hp)
If you want all the power, an air filter kit is a requirement


Stock muffler is not as restrictive as one might think
Slip-ons still give 4-5 hp in the midrange and appx 2hp at high revs

V&H duals work very well on this bike

Slip-on systems seem to give the most overall power increase on this model......
A whopping 23 hp @ 6500 rpm w/ my ECU performance package !!

TBR comp series 2-1 full system

Slip-on vs Duals


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