Author Topic: jerky on lift off and backfiring (R-tech query?)  (Read 2001 times)

jamie16v

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jerky on lift off and backfiring (R-tech query?)
« on: 11 July 2010, 20:32 »
since adding my fmic i have had backfiring, not loud as the standard exhaust contains it, a little pop and thats it. could you fix this?
also i have noticed that when i lift off i get a jerk instead of a smooth rev down before it revs down properly.
with the backfiring, it only seems to happen when i am driving sensibly like moving from first @ approx 2-3k into second gear.
i will be looking at getting an exhaust next and dont want a loud backfire with that fitted lol (dont like turning heads).
my main concern out of the two problems is the jerky lift off, it`s not a major shud but enough to affect some enthusiastic driving.
another throttle body clean maybe?.

Offline c7borg

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Re: jerky on lift off and backfiring (R-tech query?)
« Reply #1 on: 07 July 2014, 11:48 »
Did you get to the bottom of this?  I've got exactly the same problem. . Ive checked everything!

Offline Dalo Harkin

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Re: jerky on lift off and backfiring (R-tech query?)
« Reply #2 on: 07 July 2014, 12:25 »
backfiring is normally down to excess fuel in the exhaust igniting.
Try cleaning the plugs
ARZ K03s, Oettinger Side Skirts, R32 front, Carbon stage 2, Forge 007p (yellow spring), Forge Actuator (yellow spring), Pipercross panel filter with DSG parts, N249 and N112 deleted, SAI deleted, Carbon canister deleted, Rear wiper deleted, Long Life turbo back custom exhaust with 200 cell sports cat, VR6/G60 clutch kit, Creation Motorsport TIP, Catch can, 'Wellycooler', K04 charge pipe, S3 ported inlet manifold - looks pretty standard on the outside though :)