Infiniti I30t - Fuel releated problems - Needs help

[abmind]

Hi Guys, My 2001 Infiniti I30t is not delivering enough power. I noticed pick up and running is not as fast as other small vehicles. Even maxima with the same engine is running well on highways when I compare in parallel lanes. No light is on. I did changed oxygen sensors and Air flow meter last year when I see ECL on. Now I feel I am not getting enough power. What might be the reason? Will the dealer be able to diagnose properly? I am suspecting injection pressures, but I think dealer also do not recommend to open injectors.Any useful tips from experinced users.

Thanx in advance.

[shortdogg1980]

i'm having the same dilima with my 01 i30t, poor peformace and fuel economy, i done a full tune up and serviced the transmission, i'm only getting 17-19 mpg on mostly highway, i'm trying a new knock sensor to see if that helps me out any, if u come up wit anything let me know.

[abmind]

In Toronto, Green N Ross says they do TerraClean for engine fuel system which decarbonizes the injectors,sensors,engine. and cat. They charge about CAD130+tax. I dont know whether it is worth. May be some mechanics should be able to tell in this forum. I am also looking for answers.