did a top speed run in my F car last night, managed to get her to 285kph, she felt great and completely planted! Felt like if I had more road 300kph was possible..

 

thought they were limited to 250kph (155mph), and even with the limiter removed you would probably need considerably more than 340bhp of V6 base.

Be interesting to see what Vbox (GPS) would show for your speed.

 

amazing what a pulley and tune can do.

Dave

 

Be careful not to attempt high speed runs with worn or improperly inflated tires. You want something that could handle heat/speed as blowout at this speed would be fatal.

 

Don't think we have the standard 155MPH limiter (may vary by country), but I think Jag has said the F-type is 'limited' to (they don't say how it's limited)...
V6 base... 161MPH (I might have this wrong)
V6-S... 171MPH
V8-S... 186MPH

Not sure what newer V8s are limited to.

Also, tempting as it may be, I wouldn't recommend taking a photo of the dash at these speeds. Two hands on the wheel!

Don't know what they claim for the newer V8s.

 

Oh just incase there is confusion, I have done Velocityap Tune + Pulley and also removed top speed limiter. It may have got to 300 but the car was really slowing after 270 and maybe 1kph every 2 seconds

 

Cool. I am reasonably confident you checked the tires, the weather, and the surroundings, before you made your run. I am not an OZ expert but I know there are places you can go for days without encountering another living thing.

Once upon a time on the Volvo site, the GIs in Germany would post videos of their dashes as they did 150 MPH runs on the autobahn with their V70Rs.

Nice for those of us who have base cars to know we are not completely devoid of the opportunity for thrills.

As Alfred North Whitehead said, the only modern sin is speed.

 

If you can't quite make it, but are close to 300 - tape up your seams and make the nose more aerodynamic with plywood attachments. Obviously, don't block your intake, but it is small comparing to overall nose oval.

 

how good did the car sound?

 

Thrilling! My fastest speed ever was 144mph on a Honda CBR with a passenger.

Highway 14 to Camas Washington - cops every 10ft hahaha.

Ahh, youth.

 

Very cool..

BTW, it doesn't matter if it's a F-Type 5.0L SVR or a base model entry 3.0 F-Type, XE, F-pace...the max calculated oem file speed is set at 249.9kph/155mph

 

Hmmm...something seems wrong with that statement. Quite a few of us with stock R/RS/SVR have been well over 155mph/250kph. My car is set to 186mph from the factory as is the F-type R

 

Anything is possible, but the mapping in the file that states the max speed calculated, which is the speed that I increase to allow the speed limiter bump (like the OP's pic), is the limiter that's maxed at 249.9kph/155mph.

Have you truthfully gone past this limit of 155mph in your own F-Type with a stock file to prove this theory and it allows you to continue above that speed?

 

Yup. Had my V6 Base Convertible 6MT up to 258 km/h (= 160 mph), a V6S Coupe AT (rental while deciding whether to get an F-Type) up to 268 km/h (= 166 mph).

Top speed for the V6 base is listed in Germany as 260 km/h (=161 mph) - no electronic limiter. Maybe that's different in other regions, but in Germany no F-Type is speed limited. The SVR for example is listed at 314 km/h (195 mph)...

 

It would have to be limited because the base V6 can go faster than 260kph(The OP proved this with the pic).

I'll admit, I've always thought it was weird to have the 250kph limiter for them all, but when ever a client requested the speed limiter bumped, I'd just edit the vmax table and volla. JLR must be using some other table to bypass this speed limiter for models like the SVR ..etc

 

Chris,
When my local tuner first looked at the tables, he found one that allowed the speed to be set in 5 kph increments from 250 up to 320 kph. Hence the 260, 275, 300 and 320kph limits specified for each of the engine trims. Perhaps he kept a record of which table.

 

By increments of 5kph I've not seen. I just looked at the file your tuner had. There's 3 vmax tables he adjusted(which is the same 3 I do..generic on bosch), a low threshold, max calculated and then the max permissible to do a check. your stock file was 249.9/ 250 / 300. Your tuner had set them all to 320. But that would mean your stock file was limited to 250kph...These tables are the exact same across all the JLR Bosch ECU's for 3.0 and 5.0 (249.9 / 250 / 300)

 

Thanks for the clarification.

 

This thread discussed the same topic after Clarkson made some comments to the effect that the limiter wasnt limiting anything, note some posts about the limiter not kicking in until the car was in 6th (for the XFR which only had 6 gears) https://www.jaguarforums.com/forum/x...y-there-43762/

Maybe something similar is the case with the f type? I'll never know, I've not had one past 200kph and that was on a track, as I am very well behaved in my senior years.

 

Interesting; the V8S and V8R are advertised by Jaguar to have a top speed of 300/186 and the SVR at 200mph....

Dave