ECU QUESTION

If you are looking for the type of gains noticed from re-flashing a severely neutered bike, such as the 2011 ZX-10R… The answer is no. If you are looking for large horsepower gains on the Dyno, the answer is still no, because the power of your Gen 1 ZX-14 begins to flatten out before you hit the rev limiter in its current form. Where gains can be noticed are in the over-rev. Because your bike currently doesn't ‘nose over’ before it reaches the factory high limit, and additional 400 RPM or so can be beneficial. At the drag strip this can allow you to shift your bike at a higher RPM, which means that the next gear begins in an area of the curve which can be as much as 8 to 10 hp greater versus the OEM ecu. We have measured gains as much as half a 10^th in the quarter-mile, even though no Dyno improvements were noted. Additionally, this can also allow the use of one tooth larger on the rear sprocket (for a harder launch), in some instances, without the need to shift into a higher gear before the finish line, leading to quicker ET's and higher trap speeds. This increase in RPM can also be very important in land speed racing. 

In conclusion, many of the restrictions placed on the GEN 1 ZX-14 10 be offset by removing the secondary butterflies. Installing a Speedo healer can offset the top speed restriction, but this is nothing more than an irritating Band-Aid. There is no ‘plug-in’ means to increase the RPM limit, so the advantage of a re-flash certainly has its merits, even if a stunning horsepower gain on the Dyno isn't one of them. 

I hope this helps answer your question, 

Brock

No. We have seen no measurable increase in performance when advancing the timing in ZX-14's, as long as proper fuel protocol is being followed. Gains can be seen if higher octane fuels are used, but this is typically a cure to solve a problem which should not have been created in the first place (assuming stock engines). When using highly oxygenated fuels, a slight reduction in timing can shown gains  - but so small that the OEM specs prove the most desirable.

Excellent fuel info. can be found here: http://www.brocksperformance.com/brocknm/templates/default.aspx?a=255&template=print-article.htm

Brock