Thanks Peter, that's all very usefull info.

Bottom line if the power measurement is accurate and you gain an additional 10kWs of power at the tyres you will have a quicker car


Absolutely. Though, I was only trying to see what the relation between power/dynosfor different cars is. Wanted to se eif there is some pattern ... which there seems to be except for the cars I previously mentioned.

 

David no problem hope that helps you understand dyno power readings more clearly............the most important issue is to achieve accurate dyno results so you can clearly see where in the rpm range improvements have been made to both Torque and power ...........from engine tuning.

The other issue that impacts on power readings is what gear is used for the dyno test............most in the tuning industry utilise top gear (1 to 1 ratio) unless the engine does not have the mumbo to run a 1 to 1 ratio, then 3rd gear is often used for small 4 cyl engines.

Peter

APS

 

The other issue that impacts on power readings is what gear is used for the dyno test

What gear did you use when dynoing the 350Zs?

 

David we would normally use 5th gear on Z the as I believe this is a 1 to 1 ratio (strongest gear to utilise for Big grunters) though you could also utilise 4th gear as there is little difference between the 4th to 5th gear ratios from memory.

Peter

APS

 

Should we also do power testing for the before cats and after cats?

YUN can help us up to see how well a pair of high flow cats free up power.... and it will be interesting to see the results too! ALso... if you guys wanna see how flywheel might help to free up higher rev range power, I will participate as well!

cheers,

richie

 

Not sure if you guys are interested............ though I am planning on running a dyno/technical day at APS for 350 Z forum members down the path.................do you guys have any interest?

Thanks

Peter

 

yes... definitely.... kekeke.... do you know when will that be? because I am going to order a pair of cats soon for my car.... and hopefully can get some higher figures out there....

cheers,

richie

 

richie I have started a new thread for the tech day, if there's sufficient interest from forum members I will definitely organise the APS tech/dyno day.

Regards

Peter