I know we all want to help him find the problem with his MPH but we just can't do it without seeing , hearing or smelling it first .. So we can't do that.. So we need real time data ..Point is we can't diagnose over the Web ..We can give him things to look at but that is about it ..

The bike should back half harder than 23 mph hands down. I think we can all agree on that. I have seen 10 year old liter bikes with 40,000 miles and a rusty chain back half those numbers.

Without data log at the moment, Would there be enough tire spin in the back half to piss off TC1 mode? Make a run with TC on and use a camera to record what happens on the dash?

You can actually do a burnout in TC1 so I doubt a little wheelspin up top would show up. Prob TC2 for wheel spin testing. That's a pretty good idea though. It will nueter the front half of the run so bad that I can just stare at the dash.

Lol, that would just be a waste in #2. I do know enough wheel spin will cause TC1 to intervene. I do it quite often on the streets. But I doubt it will be enough spin on the track to make the bar light up. If you're spinning that bad you'd know it! Smoking makes a lot of sense. He'd know better than most. The rear can still spin quite easily in 3rd. Maybe TC1 can pick up on that? Just throwing random ideas around. Shock will help no doubt.

Throwing on the shock is more setup. Brock has a good video of the way you push down on the back and watch how it squats and comes back up. YOu don't have that dialed in = Backwards goes the ET!

I've been in L-3 to see about tire squirting. Yesterday, I had enough time to spin the back wheel and WOT the throttle, where it more stayed stuck to the intervention until I caught traction again on the pavement. I'mpressed!

Hell I have lit the tire up at the 1000' mark running 140 something. I'm talking bounce off the limiter spinning so I know it can happen. I may call Brock's and interrogate them about the Louisville Sluger bike that they put together. It's trapping way harder than my bike as well and we should be at similar power levels. I see all the things they have posted about it but I wouldn't be surprised if there was a little marketing magic going on behind the scenes... I might spring for a catalyst seat pan/tail cover and get my center of gravity down a smidge more.

Ran a 5.92 @ 124.41 this weekend but only trapped 149.35 through the back half. The search continues.... I sent my ECU off to Don so that he can double check my safety map parameters and timing. I am also having him flash in the E85 tune in my low power mode so that I will be able to test out the corn fuel at the track.

The jockey on the louisville slugger grew up with me and there where no marketing gimmicks on that bike or the run, I do however think a drag shock would still be a worth while buy to keep the back tire planted or see if you can set up the stocker to hold.

Bobby914 that bike was running MR12 fuel ..

Ok check this ticket out. Keep in mind that I weigh 165 unsuited and Brock weighs around 240ish? Notice how much harder he back halfs than me and almost catches my average times. He shouldn't walk me down on the big end with a 75lb weight difference! That bike is putting down considerably more power than mine hands down. I'm out in front of Brocks time by two bikes at the 330 and hold him at 2 through the 1/8. After that he is running me down like a dog!

Edit: Ok that pic didn't do right. Here's the rundown...

1.59 Brock's
4.14
6.13 @ 124
9.28 @ 154

1.51 Mine
3.95
5.92 @ 124
9.11 @ 149

* Last updated by: maverick1441 on 10/15/2013 @ 8:07 PM *

I guess those $3000 wheels and ceramic bearings are helping, but I still can't get over Brock pulling that much harder than me on the big end. If the track was another 100' he would probably go zipping by me.

Edit.
Brock doesn't use gas.

* Last updated by: 1400R on 10/16/2013 @ 1:35 AM *

Man you can't go by that calculator. It's a decent guestimator but it doesn't do so well with bikes because of how hard we back half. I have trapped 155 mph and my combo weighs around 730. I'm sure this calculator is also using a drag coefficient of a car and not a bike. Weight isn't the only variable that is needed in conjunction with mph to accurately guess horsepower.

If those were your weekend numbers, it's not the ECU. I think you're right. Not having the wheels/bearings/one off map (alleged) is killing your mph, not your times. He's slow out the gate but the back end catches up with the lighter parts/less friction bearings? You're right. Something is going on.

* Last updated by: Hub on 10/15/2013 @ 8:57 PM *

You were getting the matching numbers with the same flash. Something changed? It's like saying, I'm going to send in the stock OEM, I had better numbers before?

9.11 does not look like a compression problem.
9.11 beats a 9.28: does not look like a fuel or compression problem.

154 may have been a surf day? Someone waiting for the perfect conditions?
149 may be a weather change, but not at the torque's [preset] expense?

Your best mph was at what temp of the day and all that?

I agree that the bike will and should run 30 in the back half.
But will it do it every time.
Mine has varied as much as 4 MPH without Traction Control.
It has been more consistent since flashing the safety maps and opening the STPs earlier.
It could be wheel spin in the latter gears.
Or as Nasty hit on Traction Control interference if your using it to control wheelies.
What gear and RPM are you in hitting the finish line?

* Last updated by: 1400R on 10/16/2013 @ 1:47 AM *

Hub: The question of when exactly I went 155 had been torturing me for some time now. All I can tell you is that it was done on a hot summer night.

1400R: I have never used the KTRC while racing. It slows the bike considerably and I hate any kind of interference from the machine. I would be fine with completely removing the KTRC system. No noob mode for me. I'm crossing the line at the top of 4th around 10,000 if I had to guess.

1.59 Brock's
4.14
6.13 @ 124
9.28 @ 154

1.51 Mine
3.95
5.92 @ 124
9.11 @ 149
Ok Brock is 200 pounds not 240 ish .. so he has got 30 to 35 pounds more than you . that is about a tenth+ of a second ..He also runs MR12 fuel , that's 9 to 10 HP more than you on pump gas .. He also cut all the orings off the chain ..He runs less than Zero wt oil .. He also ran those numbers at on of the best tracks around ( his words to me ) His map is the same as you can get from his map share .The guhl flash is the same as yours...The bike had stock wheels but had trick wheel bearings .
So you see you can't compare that bike to yours .. Just to many things that are different to compare.. As I told you on zx1441r.com you did very very well running 9.11 and every time you go to the track go faster ..9.11 tells me there is nothing wrong with your motor .. If it were you would be slowing down not going faster ..I know you are unhappy with your MPH but your ET is GREAT !! ET wins races MPH is for bragging .. You are close to the point were you need more mods to see lower ETs .. Light weight parts , wheel bearings , fuel to name a few ..

If you want the bike to run like Brocks bike ( slugger ) it has to be set up the same way and run at the same track or a track as good as the one he ran at .. My friend has run the best of 9.03 , he had to drive 250 miles to better track to get his 8.98 ..Even at 8.98 his MPH was only 154 .. He also weighs in less than you.. Also not noted anywhere the slugger bike had to have an air shifter to run that 8.80 with Baggage riding the bike ..Air shifter can and will add a great bit of ET & MPH over foot shifting ..

"ET wins races MPH is for bragging .. "

So true, drag racing is physics, who ever gets to the finish line first wins, and that person does not necessarily have to have the highest MPH ...

I don't need to tell you guys that, you have much more experience than I do ...

drag racing Physics

Hub: The question of when exactly I went 155 had been torturing me for some time now. All I can tell you is that it was done on a hot summer night.

And then that goes back to Brock and what kind of day was he in?

Heat of my times:

Warm day = Not enough heat.

Hot day = Makes perfect heat - Less air to punch thru = Your best slip, right?

Cooling down days = Not enough heat.

Without the leak, without the compression... It's a post after post session. "Show me the numbers." It's time. Quit fart'inn around sending in an oem ecu as if to check what? Fuel/Spark/Compression = It has to be one or the others. You are handcuffed to only know one for sure. I'd first check its health, so the ecu is watt went wrong? 155 did not drop out of the ecu. It's like a monitor, a computer tower you turn the key on, it's a 555 timer. It's a clock. It keeps time and won't change your 155. It's in ROM and can't self RAM itself out of the 155. Oh sure, the burn does that, but I'm talking about that 'mail it back' move.

Geteardone. And yes, I know 9.11 still looks like the compression is up. It does not however, explain where these numbers are, as in "EQUAL" across the board.

I totally understand where maverick1441 is coming from .. Hell I too what the fastest MPH I can get and when it's down I'm upset about it ..I don't want this to sound bad to maverick1441 but I feel he is chasing a ghost.. His ETs are fine , in fact 99% of the people out there on a zx14r can't run his numbers. . Too many factors to say why he is not seeing 155 like he did at one time ..I know my bike will go 164 so just think how I feel when I run 158 159.. But I have to step back and look at my ET , if the ET is faster much lower MPH , oh well that just the way it is and it happens all the time to me and others ..AS long as the ET is dropping or on the money with the other runs I don't worry about the MPH so much ... :) You have to understand if the track owner moves the timing cone ( mph cones ) just a 1/4 of an inch from the week before you could see a big MPH swing either way ..You can see MPH difference from lane to lane on the same night ..I have had my bike run more MPH in a damn head wind of 10 MPH Vs a 10 MPH tail wind .. Go figure why because I have no clue.. When a drag strip has a big NHRA race they make sure the MPH and ET cones are right on the money , we are talking down to 100th of an inch .. They do this so records are on the money and the top teams make sure this is done before the race ..

True story .. A top NHRA prostock racer had his front end set high so his front tires tripped the staging beams .. Now on the top end of the track he would drop the front end by down force from the wind ,now the front end of the car that was 19 inches in front of the tires , now the timers were tripped with the nose of the car ..He shorted the 1/4 mile by a full 19 inches and set new ET record ..

I have a theory that on motorcycles the size of the tire and rim can be seen differently by the timing beams at the end of the track .. A lower profile tire and thinner rim will be seen later by the beams ..Today you will still see a lot of Pro ET bikes that run a full disk on the front wheel to make sure the beams see the front tire .. Top fuel rails also use these because they are using what looks like a spoke motorcycle wheel ..

* Last updated by: Smokinzx14 on 10/16/2013 @ 10:47 AM *

I'm glad you see my frustration Smokin. I was tallying up back half ET today instead of mph and I noticed something interesting. My tickets seem to show an average of a 3.19 back half while your SWB ticket showed a 3.15 back half and your stretched wheelbase was a 3.02! Damn.. I then took the back half from a buddy's ticket (06 ZX14 10" over arm) and he went a 3.43 back half. I'm going to start digging around and checking time slips that are posted online for quick and average back half ET. This is very interesting to me. I also located my personal best MPH time slip. While the ET wasn't all that impressive, the MPH was.

1.58
4.06
6.05 @ 125.42
9.23 @ 155.93

This ticket was dated 6/3/2013 and I'm sure that I was still adjusting and attempting various launch techniques. Again the 60 and 660 are terrible but that back half mph was spot on. Just wish I could get a front half 5.92 with a 30 MPH back half. It'd make me feel better anyways ha ha. Temps that day were a high of 90 and a low of 72. Considering I ran that pass at night I would have to say that it was anywhere from 8:30 to 10:00 and therefore 78-72. Atmospheric pressure at sea level was 29.91 and we are at 249' above. Humidity was at 78%. That data shows a DA of 1648 which doesn't sound like great air. I remember all of my passes that night being 152+ mph.

O and Hub I hear you I really do. I will make my way to the leakdown test, but I had a few parameters tweaked in my ECU and wasn't counting on that to alleviate my issues. The re-flash was free and the shipping was minimal so no loss there.

* Last updated by: maverick1441 on 10/16/2013 @ 3:09 PM *

Smoking, yes I know he was running Mr12 fuel, I just didn't consider it a trick or gimmick. Babbage told me about the gearing he was running and that would lend a hand as to why Mav would beat him out the hole but get run down on the back end as the numbers say. But you said it right there are some variables as to why those two bikes can't run the same and you spelled it all out. Mav, man just keep running and get your mods all sorted and I'm sure you will be happy in the end.

I'm running a 40 tooth rear. I thought that's what they were using as well?