can't wait for dyno results

 

Still trying to get that arranged. It looks like I might make it to the track before the dyno can be scheduled.

 

The final version of the tune is in. A little bit better (more aggressive) AFRs through some of the RPM range.

Now it's time for results testing!

 

What kind of AFRs are you getting?

Did your TCM get remapped as well?

 

No one has cracked the maps on the TCM, only Jaguar has different maps available. However changes to the ECU can have an affect on how the TCM responds.

 

I wonder if you could flash the XKRS-GT maps onto an XK/XKR
assuming the maps are even different..

 

Yes.

 

Needs to be done by taking out the ecu as going by the OBD port it will have problems like cruise unavailable

 

No.

 

Explain please you offer good advice so would like your input, a friend had a remap on his xkr and has nothing but problems since remapped via old port and problems as reported guys a doctor and was immense help to my family during and after our oldest had the covid 19 virus so trying to help him in return

 

I do 99% most of my remaps through an OBD2 port. Should not have any issues if all is done correctly. Pm Me if your friend needs help in this area

 

Jeremy havent you got the gt3 TCM tune in your xkr ??

 

I beg to differ, it seems both VAP and Viezu have done so, see this thread: https://www.jaguarforums.com/forum/f...0-tune-235176/
At least for the ZF8HP70 that is, dunno about the older ZF6HP26/28 in the X150.

 

Pm sent .Thanks

 

Not sure how that is relevant. This is a forum and thread for the X150...

 

Yes

 

I am sitting at the track right now. Runs start in 90 minutes or so. Proof one way or the other is soon to be had.

And someone asked about final AFRs. I won’t answer that, I’m sorry.

As far as the transmission it is acting differently but I do not know if this is a manifestation of additional power or if it’s been fiddled with. I can say that something is different I just dont know what it is.

 

Alexjag has oven me good advice I shall pass this on to my friend, good luck on the tract. Sorry I don't mean to hijack this thread

 

How'd you go down the strip ..any updates

 

Well, here's the good and the bad of it...


Here are the first runs of pre tune and post tune. These were also respectively the fastest runs of the night.


Pre Tune. Post Tune
2.0808 2.0703. 60 ft
5.8039 5.7716 300 ft
8.8403 8.8117 1/8 mile
81.46 83.16 1/8 mph
13.3993 13.4046 1/4 mile
107.4 104.19 1/4 mph

So it was faster until the end of the race, then it dropped off 3 mph.

Here is the second best time, which in both cases was the last run of the night:

Pre Tune. Post Tune
2.1325 2.0749 60 ft
5.9046 5.8042 300 ft
8.9835 8.8524 1/8 mile
80.37 81.07 1/8 mph
13.621 13.4416 1/4 mile
103.19 107.02 1/4 mph

The date of the first run was 6/21/19 at 7:30:08 pm. Dragtimes is showing the DA that night and time of 3679. The second best run that night was at 10:18:33 pm. Dragtimes shows a DA of 3216 at that time.

There is no DA information yet in dragtimes about today, the 24th, but I can estimate it very closely.


The CORRECTED numbers of the first set of pre tune runs would be:

First run: 12,799 @ 112.513 MPH
Final run: 13.092 @ 107.434 MPH

I can estimate what tonights DA will be:

First run probably close to 3804 feet, second run 3368. So the corrected figures for this evening would be:

First run: 12.782 @ 109.332 MPH
Final run: 12.893 @ 111.649 MPH

Given that I was running on a tank that was above 3/4ths this time, and that I was running under 1/4 tank last time, you could make the argument that the car was carrying 8 gallons of gas at a weight of 48 pounds.

The car is ever so slightly faster. By a micron. Is it $1000 faster? I don't know.

Edited to add: Dang, this site messed my formatting all up. I hope you all can still read the times.