WHo has 300whp and what do you have

wstar · 05-11-2011, 07:32 AM

I think we've all got 300rwhp on the right dyno in the right weather. Dynos vary so much that absolute numbers are virtually meaningless for comparison between different cars/dynos/regions. Before/after on your own car is useful, but even then I've recently been psyched out by weather changes making a larger difference than mods.

jazz · 05-11-2011, 09:23 AM

like thinkness of the air? hot cool days?

wstar · 05-11-2011, 10:08 AM

Quote:

Originally Posted by jazz

like thinkness of the air? hot cool days?

Here's a calculator, play with the numbers yourself. Between two dyno runs at the same location many months apart (different seasons), this calculator claimed that conditions accounted for a ~15hp difference in my car's dyno runs:

Dyno Correction Factor Calculator

Then you add in the fact that different dyno brands use different physics methods for measuring torque, some dyno charts use SAE correction and some don't, some mfgs are just known to read higher or lower, some dyno shops adjust their machines higher or lower, or simply fail to calibrate regularly at all and just let it drift over time.... I could go on.

ANMVQ · 05-11-2011, 11:23 AM

7 Spd AT, AWD, And Exoticspeed CBE, Stillen Gen 3's and Kaizen tune on a Mustang Dyno.

05-11-2011, 07:32 AM	#1 (permalink)
wstar A True Z Fanatic Join Date: Mar 2009 Location: Houston, TX Posts: 4,024 Drives: too slow Rep Power: 3595	I think we've all got 300rwhp on the right dyno in the right weather. Dynos vary so much that absolute numbers are virtually meaningless for comparison between different cars/dynos/regions. Before/after on your own car is useful, but even then I've recently been psyched out by weather changes making a larger difference than mods. __________________ 7AT Track Car! Journal thread / Car setup details

05-11-2011, 09:23 AM	#2 (permalink)
jazz Track Member Join Date: Feb 2011 Location: barrie ON Posts: 910 Drives: 11Zcab/12venzaV6awd Rep Power: 16	like thinkness of the air? hot cool days? __________________ One part rubber, three parts Krazy Glue.