Pulsing / surging under hard throttle.

[gtButterz]

When I first purchased my car a couple of months ago I could notice a very slight pulse in acceleration while under hard throttle. Recently it has been more noticeable, not sure if pulsing is the best way to word it but basically there is a slight cut out while under hard throttle to red line. Not sure if it could be an issue with the fuel pump or coils misfiring, these are just fairly uneducated guesses ! Any advice would be appreciated and let me know if it's an easy DIY fix.

Cheers butters

[jaydece]

When I first purchased my car a couple of months ago I could notice a very slight pulse in acceleration while under hard throttle. Recently it has been more noticeable, not sure if pulsing is the best way to word it but basically there is a slight cut out while under hard throttle to red line. Not sure if it could be an issue with the fuel pump or coils misfiring, these are just fairly uneducated guesses ! Any advice would be appreciated and let me know if it's an easy DIY fix.

Cheers butters

stock tune? then that would do it....considering getting a retune

boost leak?

could be waste gate duty related? knock occurring? car pulling timing? again tune related

fuel your using?

quite few things that could be contributing it....

find someone who can do a LV ( learning view ) and see how the car is behaving...and take it from there..

[gtButterz]

Thanks for the reply Jaydece. Yeah i'm running a stock tune. Been looking for an excuse to get a tune so this could be it , thinking i'll take it to springy motors in Springvale as I've only heard good things about them !

[trolley]

On the stock tune my Lib definitely had a few pulses while accelerating hard, it's much more linear now after Matt had his way with it. I wouldn't describe it as 'cutting out' though?

[shav]

Its not cutting out is more a surge. On occasions I get this in s mode under full load but its non existent in s#. Matt can tune it out.