Mine can get to 180kmh (around 112mph) fairly quick and creep up past that... i don't know the max speed, since i never brought it to track or anything, and haven't been able to go past 190kmh, due to fear of my safety, the car itself can still creep up.. but mine is heavily modified, stock jazz usually crept and topped off @ around 170-180kmh... also i got info that Japan ones are cut offed @ 180kmh by regulation?

i read somewhere and learn that this is due to the gearbox ratio and final drive used is different than US ones. I'm also incline to think that there are several minor engine differences between the USDM Fit and the JDM Jazz... The intake and airbox is outright different, i don't know what else... But i wondered whether the bigger gearing used on USDM do not trade off power with top speed? or did the engineers in Honda compensate it by varying the engine parts? (such as the intake i metioned earlier)..

ps. Pls note, i'm using GD.. i don't know about GE..

 

I got a little mini-cam I'll mount and video from 100kph to about 190kph, stay tuned.

 

I know for a fact a stock 2011 GE8 5MT base will do 114mph.

 

Timed it accurately on an average for 2 way run within 15 minutes, did we?

 

We knout wasn't averaged. The fit is not a high top speed vehicle. Let's just say 110 stock and be done with it... Stick with your curves at 80 and be happy!

 

GPS has a top speed function. it should be close enough.

I was chasing down a new Nisan Z out on the highway.

 

you mean the z was laughing as you tried to catch up..

 

I managed to get to 105 but since I haven't had it allainged in a while it starts vibrating at 100 so yeah...

While going to work, i decided to hit it and managed to hit the fuel cut off at 115. To be clear with all i have the automatic 5 speed.

New update.
After doing the oil change, my friend( has a 04 hyundai accent) where having fun on the freeway and on an downhill part of the freeway my fit maged to do 123ish mph and the fuel cut off was no where to be found. I have been able to recreate this now twice but other times i hit the limiter at 115. kind of wierd XD

 

Gear limited to 204km/h, this was done on the Tomei Expressway on my way over to an event, normally all JDM cars are governed to 180km/h and kei cars governed to 140km/h. On Suzuka's main straight was only able to achieve 179km/h, car just doesn't have enough testosterone to go any faster before time to brake for the wonderful first and second turns and up into the esses...mmmmm Suzuka is so lovely. Central Circuits main straight was only able to reach 165km/h. Sodegaura Forest, only able to reach 133km/h, maybe 135 need to check the GPS data. The smaller circuits I've ventured onto are around 115km/h give or take, obviously it depends on the circuit layout.

 

My Dad drives a bit too fast!

 

Interesting, i've always wondered this. I know yours is 6 speed but US 5 speed should be similar I think as far as top speed limitations due to gearing?

If that's the case the governor is not that far off the top speed anyway, which is good to know.

 

Actually mine is a 5 speed. The 6 speed here uses the 5 speed gear there as its 6th and uses the 4.62 final, so the newer (well now older since the new new is now out) RS and Fit Sport there should have the same theoretical top speed, but the RS will get there faster with the tighter gearing. Mine dropped top overall speed changing from the stock 4.29 final to the MFactory 4.68 final. Previously, in theory, never attempted it, my top speed would have been about 214km/h at 6800 and my 204km/h was winded out in 5th just at the limiter of 7100 (J's reflash). The US model if in a perfect environment not limited by friction and wind resistance the gearing would allow up to 145mph (234km/h) at 6800rpms using a 205/50R16 setup.

 

I did 101mph in mine the other day and it got there pretty quick for what the car is. I ran out of room but know it had more I just don't know how much more. Chances are I wont ever get it to that speed again.

 

So anyone have any experience removing the speed limiter via something like HKS SLD or Apexi RSM on the GE?

I assume they work by intercepting the speed signal and sending a false signal to the ECU to trick it into thinking it's at a speed under the limit, but i'm not sure how that would work out on the dash speedometer using CANBUS... will the speedo read the false signal while the RSM reads the correct speed or what? The HKS SLD is not a display so i'm thinking if that's true I wouldn't have a speedo over the cutoff but with the RSM I will.

True? False?

 

Its likely speed limitation is based on rpm signal, not speed. Screwing with that with confuse the fuel delivery and not be a successful venture. Since the speed capability of a Fit is less than even S rating tires (118mph), what advantage is there in defeating the speed limiter?

 

speed limited to VSS signal. unplug the VSS, and there is no way you will make it past 100mph though, as vtec does not function if the VSS signal is not seen.

 

Tires are rated higher than that.

How could it be limited by RPM? That doesn't make sense. The ECU doesn't know or care what gear you are in on an MT. 5th gear winds out further than the speed limiter allows.

Those devices don't disable the VSS and don't mess with fuel delivery at all, it just reads RPM and speed, and there's a different way to hook up the RSM to disable the limiter so I assume the unit sends a faulty signal at the limit (which you can set in the unit).

 

Can you over rev in any gear except by downshifting?
the programmed injector flow calculation involves not only air flow but rpm. try shutting off rpm signal and see what happens. Load is as important as air flow to determine fuel output.
perhaps we are unaware where your speed limiter is set. If its greater than 112 mph its doubtful you will exceed that without modifications, or you have small diameter tires that run out of rpm or speed indicated and not real so you cannot reach actual drag limited speed. Unless you change rpm limiter you'll not likely get much more either as out Fit reaches peak power about 107 mph.. If you want more speed try going to bigger diameter tires of narrower section.
The Fit is not very aerodynamic. We've seen reports of oer 0.4 Cd's. Once over 105 mph the power required to overcome drag gets monsterous. And it ain't there in 4th or fifth.
cheers.

 

FlashPro for the GD3 has separate limiters for speed and redline, which suggests to me that the 1st gens use the VSS.

 

If you can't get past 107 there's something wrong with your car or I have a factory freak motor. Mine still pulls above that. Tire size is spot on to factory size just about. The car likes the weather here too though especially very early in the morning. If I head to higher elevations it feels like poop comparatively.

RPM is limited at 6800 regardless of gear. The ECU doesn't care what gear you are in. You can over rev by downshifting because there's nothing the ECU can do to beat that mechanical force, has nothing to do with fuel or throttle and everything to do with the wheels connected to the transmission. IIRC 6800 in 5th is about 140 mph? Stock ECU limits at 117-120 or something I think? I'm not saying stock you can go 140 by removing the limiter, this was all theoretical. Let's say we're running a big turbo.

So I'm 99.9% sure speed is limited by VSS but it seems nobody's tried to defeat the limiter on a GE. Thanks DSM for input on GD... Would be nice to be able to just click a box on a computer screen to disable the limiter.