AGU stuttering under boost

[ReadieeVTS]

Hi guys, so I've got a slight problem with the new car...as soon as I hit 0.5 bar of boost it will stutter/misfire like a muthaf**ker, I've changed the plugs and it's still the same, it's had 2 new coil packs on but I think there cheapies as they aren't branded etc. it will stutter a bit when in 2nd-5th gear at low revs when driven normally, I can't connect it up to a obd scanner as my one says that there "no communication found" help me guys lol

[barrym381]

ignition amp i would be looking at as coil-packs on the agu very rarely fail 

[ReadieeVTS]

yeah that's what I was reading, just wish my obd port was working!! maybe it could of narrowed things down for me but nope!

[ReadieeVTS]

Update: just bought a ignition amp and its still the same 

[ReadieeVTS]

my mate managed to get vagcom on it and it said MAF meter signal input too low/ intermittent.

I Have however run the car with maf unplugged and its still the same im lost!!

[topher]

could be a weak fuel pump not flowing enough to make a nice rich mixture under load, need to get your fuelling checked

[ReadieeVTS]

could be a weak fuel pump not flowing enough to make a nice rich mixture under load, need to get your fuelling checked

whats the best way of checking that pal?

[topher]

http://www.ebay.co.uk/itm/INNOVATE-MTX-L-AFR-Wideband-Air-Fuel-Ratio-Gauge-3844-/300506017816?pt=UK_CarsParts_Vehicles_CarParts_SM&hash=item45f78df018

[ReadieeVTS]

that's more expensive than a new pump LOL