Good morning all, i bought few months ago my 1st RX-8 and still getting to know it.
Until now all good but i can understand that i have somewhere loss of power..
my RX-8 is 2003 edition, Automatic, 4speed-4port.
it should produce 190hp but not even close, more like 14-150hp, any ideas? i have changed the plugs, fully serviced it, with new catalyst, all good nothing damaged.
engine sounds and works perfectly, not failing.

 

Congrats and welcome to the club! Even I'm trying to find out why autos mysteriously lose power.

Some things to check.
Does your engine have good compression? Have you done a compression test?
How slow are we talking about? How fast does it hit 60? Time a 0-60 run and post up the time
Have you cleaned the MAF and ESS sensors? Does it have a new air filter? It helps.

 

My mechanic did a compression test and told me its all good with the numbers, its not failing.
Didn't took it for maximum speed yet but i think more than 190km/h doesn't go.
i will make one 0-100 test i hope today and ill post the results.
MAF sensor is cleaned, the ESS i dont have a clue where is it..

 

Lol, he's got no idea what he's talking about.

 

Just did my 0-100 and got 11seconds!!

 

Do you have the compression test numbers? 0-60 in 11 seconds is slow. A 4 port 4 speed auto should hit 60 in around 9 seconds.

 

https://www.rx8club.com/new-member-f...causes-249529/