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  1. #1
    edwards_a3's Avatar
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    poor rolling road result :( need help!

    hey,
    after popping down to the rolling road at SRD in launceston, i left very very unhappy. i have recently had my A3 1.8T remapped so thought it was agout time i had it checked. i ended up pulling about 121bhp at the wheels, NOT COOL!
    the guy down there seemed to think it was running a little lean, and there was a slight fueling problem. although i have just had a brand new fuel pump fitted
    even so where the hell has all my power gone, dont get me wrong, it feels very quick indeed, but that figure makes me want to cry.
    the car is 1997 and has done 145k, but theres gotta be something i can do.

    any ideas about the whole "lean" thing and bad fueling

    cheers
    Last edited by edwards_a3; 20th May 2009 at 11:43.
    97 A3 8L 1.8T sport - custom code stage one - Miltek cat-back - forge 007p - cold air intake - jamex coilovers - Eibach F&R ARB's - S3 brake upgrade with Black Diamond combi disks and Mintex extreme pads - black projector headlights - 17" TT alloy wheels in anthracite - carbon fibre bonnet........... and some audi-sport.net stickers in the rear quaters

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  3. #2
    S3 HODGE's Avatar
    Brown passenger seat.

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    When was your A3 last serviced? I remember seeing something on top gear were they dyno'ed it, Gave it a good service and dyno'ed it again and got a huge power increase from the 1st time.
    What was the BHP at the flywheel?
    Were did you go to get it mapped?

    The One And Only Brown Bora

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  4. #3
    h100vw's Avatar
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    Heat soaked intercooler?

    Log the MAF on the road and see what that's doing.

    Gavin

  5. #4
    Works 60% the time, Everytime.

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    Possible maf or lambda?

    2003 Audi S3 + Go faster bits

  6. #5
    Prawn's Avatar
    My other car is a MINI!!!!

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    Yo Eddie,

    Did Mark use the big fan when he power tested it? was it in front of the drivers side front wheel? Marks rollers are pretty slippy too from what I've seen, did he use any of his belt spray stuff to help the tyres grip to the rollers?

    I take it you didn't get a graph print out? (last time I was there the rollers wern't hooked up to a computer)

    Try and borrow vagcom from someone and log the maf whilst giving it beans from low down to redline, you want to be getting between 140 and 150 g/s on the maf, which could indicate between 175-190bhp, which is roughly where you should be.

    You're probably loosing 40bhp through the tranny I'd imagine, so it looks like it's probably around 160ish at the crank currently.

    Try and get yourself along to a RR day at a place with a decent modern dyno like AJ's or AP Motors, and get yourself a print out of power and torque, as well as fuelling
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    Prawns TFSI Turbo'd 1.8T Track Car

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  7. #6
    edwards_a3's Avatar
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    thanks for the replys, erm yea belt spray was used, and it is long overdue a service so that will be done after mot if i decide to keep it as my luck has again struck.
    i fear my gearbox has gone, i first lost reverse, then couldnt drive it, got father to give it some whilst i followed in his, and all of a sudden there is me covered in smoke, so the car is parked, where it will stay untill i devise a plan.

    but thanks again for your replies, if i calm down i may look into all your solutions.
    97 A3 8L 1.8T sport - custom code stage one - Miltek cat-back - forge 007p - cold air intake - jamex coilovers - Eibach F&R ARB's - S3 brake upgrade with Black Diamond combi disks and Mintex extreme pads - black projector headlights - 17" TT alloy wheels in anthracite - carbon fibre bonnet........... and some audi-sport.net stickers in the rear quaters

 

 

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