Lumpy ness and uneven tickeover please help!

[zachattck]

Hi guys,

My G40 struggles when ticking over and eventually dies and driving under 2000 rpm kangeroo's and doesnt ride very comfortably, over 2000rpm it runs fine.

Engine mods its had, smaller pulley on standard supercharger.
toothed charger belt
ECU Chip to match pulley

i have recently replaced the rotary arm, distributor cap, ht leads oil filter and had a fiull oil change.

any ideas woiuld be great jsut want it running well!!

thanks

Zach

[hayesey]

I'd start by checking the ignition timing

[zachattck]

thanks man, thats next on the list