what are some reasons for low end resistance when driving?? Imean itll go and then right into it it will start lagging and than it will overcome?? Yeah i know search button.lol. But i cant find anything.. thanks for any help...

 

clogged filters, dirty plugs, too much gas at once making the engine bog, too many passengers, 1.5litre engine geared for fuel economy and not power, slight grade, clutch slipping? air/fuel mixture is bad or something is wrong with the CPU and is affecting mixture and timing?

 

first off, nice grill and thanks for posting in my last post. Is there a DIY to change the filters i dont know were to begin were are they,,,,,thanks man any help im not a mechcanic...

how do you change the fuel air mixture?

 

first thing is how many miles on the box, and how do you drive - like a granny, or do you race around and push the box at every chance you get? did you allow enough time for engine break in? I would first check the air filter, and spark plugs to make sure they look normal. if dirty, clean them or get new airfilter / and or plugs. is yours a manual or auto?
PM me for more info. I think this is a good topic that others should read up on. Did it suddenly get really hot or really humid out by where you live? heat and humidity will trigger the fuel injection system to put out less gas, and mess with the timing accordingly. love that VVTi learning CPU. less gas in the mix = less power, thats why your ride runs stronger in the winter and at night. really, there is no way to change the A/F mixture. you could try getting an AFC2 controller or a gready Emanage, but the learning CPU will compensate for that as i have heard. you can get a Echo CPU which i believe is not a learning CPU. Should be pretty easy to change the fuel filters, but i believe that there is no way it would be clogged even if you have an 04 like me. check the air filters first.