2008 Hayabusa vs 2008 ZX-14 on the dyno

[rotts4u]

The waiting is over. Today I was present at the local dyno shop where both bikes made it in for a completely unbiased shootout on the dyno. Both bike had nearly identical mileage. 294 on one vs 285 on the ZX-14. Both had been heat cycled several times and had oil changes with 10W-40 oil in both. They also both had 100% pump, 93 octane gas and the rear tire pressure was checked and were within 2 psi. Also both had adjusted chains and they were properly lubed. In other words we did everything possible to ensure the test was as fair as possible.



I own the 2008 Busa and the dyno operator/owner of Dyno Masters in Chattanooga Tn. Mark Hromi owned the ZX-14. Our intentions were to test both bikes stock and run them 3-5 pulls each and then pull them off the dyno and install a Power Commander and map each one at 100% on the DJ250I machine using the Tuning link software and then run them both again for HP/Torque.



The Busa power commander (2007 GSXR1000 PC actually) plugged in just fine and all was well but for some reason the 2006 ZX-14 Power Commander caused the ZX-14 not to run at all. So we were unable to map the ZX-14 . And as you see the air fuel curve on it is really rich and no doubt a lot of power is being lost. You can see exactly at the point the air fuel goes rich the power starts to lose its upward slope and it noses over.



So the first graph is the BEST pull from the 14 and the Busa. And the second run is the before and after on the busa after mapping it with the stock exhaust etc.



I know all the Kawi guys are going to cry foul but personally I dont know what else we could have done to make this fair. Same day, same dyno, back to back runs on a great day with pump gas etc. The dyno is a VERY well maintained machine and the numbers on the busa seem to be very close to the others I have seen reported from Dynojet etc when everybody uses SAE reporting not STD. Also both bikes were bought locally off the dealer floor. These were not sent to me from Kawasaki or Suzuki, these are RETAIL bikes.



Discuss !!

[Wolf1397]

Not much to discuss.  Your attention to detail and the numbers speak for themselves.  Same dyno on the dame day.  Would have been interesting if you have had another Busa and 14 for comparison.  As we all know; some units run stronger than others.

[tinmann8]

God the pipes on that ZX-14 look down right Generic !!

[Ksana]

honestly don't see how you could have made it more fair
not sure why the 14 rejected the PC...
if the Kawi boys cry about anything-prolly be: "the different dynos, produce different #s"
I haven't got to see either one on the street yet...

what got you in the works for your Busa? big bore this one?

[Shamrock]

so the busa made 170 out ofthe box and the 14 159 correct ? I just want to make sure what i am reading is right

[VegasDude]

On the first run the 14 made 159 hp and 102 torque, and the busa with 100 torque. The 14 made more torque and less horsepower?..........could the graph be incorrect? Nice comparison though.................!

[Tybalt71]

Nice write up! Txs sfor taking the time

[ChrisCoupe]

Thats what it looks to be rob and after the busa hit a bit of tinkering with the power commander it gained 2 whp and 2ft pounds of torque...........

[Shamrock]

Thats what it looks to be rob and after the busa hit a bit of tinkering with the power commander it gained 2 whp and 2ft pounds of torque...........

Ya i see what your saying but look at the first Graph See what Vegasdude said  almost same TQ but 11HP diff i just want to confirm thats all i know its possible since the stroke but didnt think the 14 would be that far off

[Gary B]

Very nicely done! Very articulate!! Wish you had a PC for the 14....any chance or redynoing in the future?

[Shamrock]

Never mind i looked at the A/R and the 14 is wayyyy rich so right there is the 11 hp diffrence  Honestly its fucken close all said and done

[hayazuki]

The Kaw maybe mapped for the street and not the dyno....

I've run a 14 with my 08 Busa over and over, and the results aren't consistent with an 11hp difference between the bikes. 

[EtrnlSoldier]

The Kaw maybe mapped for the street and not the dyno....

I've run a 14 with my 08 Busa over and over, and the results aren't consistent with an 11hp difference between the bikes. 

Pretty close then?

[gnd111]

The Kaw maybe mapped for the street and not the dyno....

I've run a 14 with my 08 Busa over and over, and the results aren't consistent with an 11hp difference between the bikes. 

So the 14's are kicking your ass or other way around or are they close enough that 11rwhp seems right since that would be less than 2mph in the 1/4.

[hayazuki]

The Kaw maybe mapped for the street and not the dyno....

I've run a 14 with my 08 Busa over and over, and the results aren't consistent with an 11hp difference between the bikes. 

Pretty close then?

very...

[Steve P]

I am still confused. What is the 170.07 run on both sheets?

[Bruce Bohannon]

Another nice write-up Don.  Thanks to all for taking the time and effort to perform the operation.

I saw the Orange/ Black Friday eve; that makes all three US color combos now.  I have a clearcut color choice.

echo above.....  Whatcha got planned for the Orange/ Black?  New Wheels (and brakes as per usual?).  PC3..  Have you settled on the pipe?  Can you tell us other items you have planned or do you need to keep things close to the vest until public release?

[moregpz]

Where's Fearsome?

[hayazuki]

The Kaw maybe mapped for the street and not the dyno....

I've run a 14 with my 08 Busa over and over, and the results aren't consistent with an 11hp difference between the bikes. 

So the 14's are kicking your ass or other way around or are they close enough that 11rwhp seems right since that would be less than 2mph in the 1/4.

D: None of the above

We've run the two bikes against each other probably 6 or 7 times now and every time it's the same. The Busa pulls the 14 maybe one or two bikes at the hit. (usually around 50 mph) The 14 starts pulling it back slowly and we've shut them down around 170. At that speed they've been next to each other within a half bike length.

His 14 is an 06, he pulled the flies and added a PC3. He probably has the af cleaned up with the pc. My Busa is just as it sat on the dealers floor, now with 300 miles on the clock, less some stickers...

Just saying, real world riding, the bikes look to be closer than the dyno shows.

[rotts4u]

Since peak torque and peak HP occur at different places on the RPM curve it is completely normal for one bike to have more peak torque yet less hp than another bike. Remember the formula for HP= Torque x rpm/5252 so if you play around with that you will see what I mean and why.

The 170hp is the busa and the 159 is the 14 and both were corrected SAE numbers. The 172 was after the busa was mapped and yes I agree that the 14 will get a lot better with mapping and we plan to do that as soon as we get a PC. We are not sure if the one we had was just a bad one or if the 06-07 PC will not work on the new 08 bike. It just would not even run once the pc was plugged in at all.Maybe in a week he can get it back on the dyno and re run it. And I think it is entirely possible that the 14 is mapped better for rolling as opposed to the dyno, but I thought these bikes all had air box sensors etc and adjusted maps for speed etc. Or is that type of closed loop air fuel control not on bikes yet? We did all this in 4th gear. Maybe we should have tried another gear to see if that made any difference too?

[rotts4u]

What do each of you weight on the rollon tests?

[moregpz]

All kawasaki bikes are dyno tested at the end of the assy line, if there are any issues with power output they are sent back to repair to get corrected.

[hayazuki]

What do each of you weight on the rollon tests?

He weighs between 170 and 175, I weigh 200.

We've talked about it, the weight, the low miles on the Busa and the fact he's running a PC on his bike. The Busa hits really hard quick, but when I check the mirror I can see him pulling it back while we run up.

The way they set right now, they're real close.

[rotts4u]

The 30lbs will matter for sure. Swap bikes to see the difference.

[stan1300]

Kawasaki possibly set the bike up rich to help with the high speed leaning out once the bike is running high speeds in the upper gears (ram air) A still dyno isn't  able to push 150 plus mph wind in the air box.