Hi guys,

Just wanting some feedback on what is the most conmonly used method for determining max power (what is printed on the dyno sheet). Coldest run, hottest run or somewhere in between?

My tuner goes by the "hottest run" which is obviously going to be lower so just interested in knowing what is common practice.

most common practice and pretty much only accurate way of determining power is mph @1/4 mile.

it's not as accurate as most will have you believe

1/4 mile is only not accurate for guys who don't backup their Dyno sheet with a good timeslip

bullsh*t

Yeah if you cant shift the weight you aint got the power...well at the track anyway

Everyone has the power on the street though where no traction can be had yeah?

339rwkw SA 8F mode BA full weight stock stall converter 17psi peak starting at about 10psi so progressive boost=126mph many times for me on street rubber 1.9 60fts.

Edited 16/04/15 11:45 AM16/04/15 11:45 AM by Skids4kids

60 ft changes mph though so really ratter is right mph isn't acurate.

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bullsh*t

Why is it bullsh*t??Do you think their is too many variables??

Cause he tunes cars for a living.

So my way of looking at this is:

Two cars,

Same mods,

One with ET Streets,

One with Linglongs,

One could be manual,

One could be auto..

Both could be within 5rwkw on the same dyno but guess what the difference is on the 1/4..

I think some dyno readings could be largely inflated which is where guesstimating with 1/4 mile power calculators come in and can maybe be used as a reality check or maybe use them to back calculate effectively how much of your cars power you are using. Ie: dyno tells me I have 310rwkw, 1/4 mile indicates I have 209rwkw maybe I need to look at getting the power down better.

So trap speed and dyno figures are both not accurate???

I guess we'll just claim to have as much power as we want.