New Mods Causing Car To Miss, Backfire, And Surge?

[KiwiRS4T]

2 hours ago, Karina79 said:

Hi guys I really need some help with my VYSS I had a new exhaust put on it and it is surging goes dead while driving it stalls while driving it completely cut out  backfires running rich I don’t know what to do I’ve changed coil  packs ive changed the plugs, spark plugs, fuel filter also I’ve noticed when I go to refuel there’s no sound when I take off the fuel cap every time I change something it goes fine for a tiny bit then sick again it’s normally good when cold but not when it warms up any information would really help

Welcome to Skylines Australia...but isn't there a Holden forum somewhere you could join?

[admS15]

Install an RB and be happy with life.

[Dose Pipe Sutututu]

Install a 2JZ and a Samsonas 

[GTSBoy]

Wait......isn't this actually where we should be recommending an LS?

[admS15]

LSA is the way

 

[Peter]

My god...my thread is resurrected after 12 years!!

[niZmO_Man]

On 31/01/2020 at 8:38 PM, Karina79 said:

Hi guys I really need some help with my VYSS I had a new exhaust put on it and it is surging goes dead while driving it stalls while driving it completely cut out  backfires running rich I don’t know what to do I’ve changed coil  packs ive changed the plugs, spark plugs, fuel filter also I’ve noticed when I go to refuel there’s no sound when I take off the fuel cap every time I change something it goes fine for a tiny bit then sick again it’s normally good when cold but not when it warms up any information would really help

Are you sure your air flow meter is good? Any intake leaks?