1jz-gte problems

[albz259]

Hi i have just converted my jzx100 mk2 grande to a x100 1jz-gte and r154. I started it up and it idles fine but as soon as i rev it, it just sounds horrible almost like its down a cylinder.... Is there any special wiring i have to do?, all the ecu seemed to connect up fine but there are 3 plugs off the engine harness down by the passengers left foot that dont seem to plug in anywhere? and i cant use fault codes as my dash dosnt seem to be getting signal from the engine.... has anyone here down this conversion on their car?. thanks.

[m989]

Could be AFM, swap one from another car and try it. Is it using a GTE ECU? Those 3 plugs you speak of may connect to the TRC computer thats mounted under the glovebox.

[albz259]

iv since fixed the problem thank-you!. However it now feels very laggy :/