leksusGS15

Does anybody know, how much horsepower the stock GS300 has taking into account the weight of the car. Did anybody do a dyno test, because i was told that it is much lower than 220 hp and even lighter cars like accord, bmw 3 series and other cars with similar hp can smoke my car. Also when speeding my gears shift very slow but smooth, i guess i should try the power button next time...

uplusd

I'll take a wild guess and say 175-180

leksusGS15

thats soo low, its humiliating, i was expecting a bit higher.... These days the listed HP for new cars is the actual hp with weight because of the new SAE standards.

uplusd

Well you figure the auto tranny has about 20-25% loss

Fikse

here are some actual gs300 dyno graphs.....


http://www.dragtimes.com/Lexus--GS300-Dyno-Sheets.html


.

tommyGS3

iTrader: (4)

when i dyno my gs stock, it was 171 rwhp
now after exhaust, intake and S-afc, plus a tc, 192 rwhp...
a gs300 doesn't push much without going FI


headers and cam gear goes in next week,, hoping numbers are better

IAGS400

The SAE standards don't use weight since the test doesn't include the drive line. The standards make sure all accessories and fluids are in the motor when they are tested.

A few companies were shorting the test motor a few quarts of oil just to get a few more hp out of it.

It still doesn't take into effect of drive train loss, which is why your motor would dyno so low.

DarKnight

iTrader: (3)

If I'm not mistaken the hp numbers given by manufacturers is the engine's hp not to the wheels.

4ntvings

iTrader: (6)

dotn be disappointed. all data provided by the car mfrs are either fluctuated or less for some political reason. you should also know, most cars hp are in the 200 range now. its not like back in the early 90's when cars had mid 100hp and that was fast, and if u had a car w/over 200hp, you were flying. be hapy with your decision, if not, boost! just my 0.02

JeffTsai

iTrader: (1)

Just boost the GS3 and get some insane hp numbers. I'm just about finished with mine. Should be up and running by this Saturday

RX729

171 rwhp isnt bad at all...