Hello all,

I am going in tomorrow to get a baseline dyno on my 2002 XJR to use as my "before" figures.

The plan was to run 3 pulls to get a more credible reading.

Any advice on how to dyno would be appreciated.

dyno in 4rth gear? How do I keep it from downshifting?

 

As long as you use the same dyno pre and post mods it should be fine. Best gear is closest for a 1:1 ratio. 90% of cars use 4th gear. I've always been a fan of mustang dynos as they can mimic a real world situation since they can apply load to the car, but when comparing numbers as long as you run the same dyno it's irrelevant.

 

^^^^^ this pretty much says it all

 

So you are both in agreement that regardless of the baseline running 50hp high, the changes from that baseline from mods B->C -> D should be reliable?

Just double checking to make sure I understand you correctly.

 

as long as everyting is kept the same thts what I think anyway

 

exactly. just make sure your tuner applies the EXACT settings as before and you should see what you attained through your mods.