A3 2.0 T Quattro Stutter

[Busby]

Hi all,

Had my 55 plate 2.0T quattro bluefinned back in September. Blew the original Diverter Valve almost straight away and had it replaced by the local VAG independent with latest non-rubber diaphram version.

In the last few weeks under full throttle, and usually in higher gears on the motorway I have a very brief "stutter" when I ask the car for full torque \ power.

I've had a look on various forums and seen a few similar posts - one for a 2.o TDi here http://www.audi-sport.net/vb/new-a3-s3-sportback-8p-chassis/75728-2-0tdi-stutter.html

It is pretty much only during 50-70 or 70-xx when it happens - no problems when starting up or idling (yet).

Whadyaereckon? Coil Packs- I'm thinking. MAF? Fuel Pump? Injectors? It is a bog standard Superchips Bluefin - with no other mods to the car at all....

Cheers

 

[antmax7]

plug's when where they last changed???????

 

[RobinA3]

take the bluefin off and see if it does the same thing

i have a 55 plate 2.0TFSI and when i first got my bluefin (3yrs ago) i was getting a stuttering under full load, turned out that the map was too aggressive and the ECU was closing the throttle.

 

[S3Alex]

The usual ones are plugs and coilpacks.

Mine was hesitating and stuttering a bit a few months ago,and changing the plugs cured it.

 

[Busby]

Thanks guys. First thing to try is restoring the original map with the Bluefin and see what happens - then the plugs if that makes no difference. I haven't had them changed since I've owned the car (Mar 09), and I've done about 20k miles since owning the car - will have to check with Audi whether the previous owner has them changed as part of servicing - they may still be the originals.

 

[antmax7]

def plugs then by the sounds
buy a decent set, oem wont be the best option with the map in place

 

[Busby]

After reverting back to the original map with Bluefin, there was a less pronounced stutter, but a stutter all the same. Then put the Superchips map back on and it really was more of a misfire than a stutter. Took it into the local VAG specialists (as my GF pointed out - that acronym could be pronounced and misinterpreted - she thought a VAG specialist was a gynecologist) , who diagnosed a misfire on cylinder 3. So I've changed all the coil packs ("They tend to go quickly after one has failed, sir" - probably ballacks) and all the sparks. On the brief drive home all seemed well, and the car felt much happier anyway.....so I think we have fix;-)

 

[antmax7]

glad you have got it sorted fella get back to enjoying it now:thumbsup:

 

[Busby]

Yep, cheers mate. Power delivery is smooth as ;-)

 

[Swanny356]

Can anyone recommend some good plugs and is K & N air filter worth it also - I've had a stage 2 Bluefin and got to say WOW! Don't want to start having problems now though.

 

[antmax7]

stage 2 bluefin what mods do you have?????
the favorite induction kits are forge twintake,ITG and Evoms

 

[akash_sky1]

stage 2 bluefin what mods do you have?????
the favorite induction kits are forge twintake,ITG and Evoms

He said filter... but yeah go for one of those intakes, or the Neuspeed like I have, there all very good. Forge Twintake is probably a bit overkill on a KO3 unless you were going to the tune the crap out of it. Get a TBE system or atleast big bore downpipe/ sports cat and then Bluefin stage 2 and you'll love it. K& N filter on its own won't really do much.

As for plus I've got some Denso IK24s ( Iridium ones), these are excellent and uprated cooler plugs are must in remapped car.