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  1. #1
    jq_quint's Avatar
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    Living with a Remap "Concerns"

    2 Question's for you peeps on remaps, not who/where or how much power but simply:

    - How much does it effect reliability of the car after remap
    - Can it really offer improved mpg if driven accordigly? (REALLY GUYS).

    The reliability question really comes from sooo many people on here and on the A3/S3 forum complaining about problems not too long after remap (more specifically the S3 guys), could be co-incidence but i'm guessing more likely that old parts get pushed too far with more ooomph ! ?

    Any advice appreciated.
    J.
    I SAID BYE BYE TO THE S4 , 18 MONTHS HAVE PASSED AND WISH TO RETURN IN AN S3......
    (SSSHHH NOT TOLD WIFEY YET)

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  3. #2
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    My current car isn't remapped but i've owned many a remapped cars before.

    I've found and heard that it won't affect the reliability of the car but if a part/s on the way out ,it can speed that process up as theres more force on it.

    If the cars driven accordingly then YES you can get more MPG as it engines not working so hard.I've nearly always got better mpg out of my remapped cars than before cause you don't have to use so many revs to get to the same pace.

    To be honest it depends on how and where you drive , along with the car , roads , traffic etc.

    Jay

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    When I bought my S4 I didn't even know it HAD been remapped. Totally smooth and reliable for the 3 1/2 years I've had it.

  5. #4
    jcb
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    tens to be the usual suspects that die after a remap.
    in which case you could argue that they were on there way out.
    You are alwasy going to speed up death of a particular part working it harder. It just really depends on how hard and how fast.

    I would imagine it is reasonable to expect that some part on a 10 year old car are going to need replacing to get the most out of a remap

  6. #5
    "Stick a V8 in it!"

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    yer, you cant expect a 150k old turbo charger to go from delivering 8psi to 16psi and continue working forever.

    Its not enough to worry me, unless ofcourse your going to remap it, then drive it flat out everywhere all the time

    If you drive clamly most of the time, and only have a blast now and then, the components are only really working harder when your having a blast...

    2000 A4 1.8T Sport Quattro Avant, Berry Pearl
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  7. #6
    twostrokepower's Avatar
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    if its a NA car yes you can get more mpg after car is chipped if you drive it as before you chipped it and should not wear anything out quicker than std ,as for a chipped turbo car id say as it gives much more power and you cant help but use so MPG will go down, it will also wear out worn parts faster IMO

    simon

  8. #7
    jq_quint's Avatar
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    Quote Originally Posted by jay_w View Post
    I've found and heard that it won't affect the reliability of the car but if a part/s on the way out ,it can speed that process up as theres more force on it.

    If the cars driven accordingly then YES you can get more MPG as it engines not working so hard.I've nearly always got better mpg out of my remapped cars than before cause you don't have to use so many revs to get to the same pace.
    Jay
    Ok I guess as far as parts go, what i'm really asking is that are S4 parts common to the corresponding RS4 parts which obviously do run under more power?
    As far as MPG goes have you had a chipped S4?

    Quote Originally Posted by Dan Gliballs View Post
    When I bought my S4 I didn't even know it HAD been remapped. Totally smooth and reliable for the 3 1/2 years I've had it.
    Thanks Dan, thats encouraging....p.s surprised you haven't sold yet, looks a nice car matey...

    Quote Originally Posted by jcb View Post
    tens to be the usual suspects that die after a remap.
    in which case you could argue that they were on there way out.
    You are alwasy going to speed up death of a particular part working it harder. It just really depends on how hard and how fast.
    Quote Originally Posted by aragorn View Post
    yer, you cant expect a 150k old turbo charger to go from delivering 8psi to 16psi and continue working forever.
    If you drive clamly most of the time, and only have a blast now and then, the components are only really working harder when your having a blast...
    JCB / Aragon, thanks for the advice guys, ref my response above on the RS4/S4 comparitive parts, are the similar or are the RS4 equiv's higher spec?

    Quote Originally Posted by twostrokepower View Post
    if its a NA car yes you can get more mpg after car is chipped if you drive it as before you chipped it and should not wear anything out quicker than std ,as for a chipped turbo car id say as it gives much more power and you cant help but use so MPG will go down, it will also wear out worn parts faster IMO
    simon
    I understand your point simon about can't help using the power..You have an RS4 I see what are your opinions on my query above (S4/RS4 parts comparison "apologises if it's a stupid question")?
    I SAID BYE BYE TO THE S4 , 18 MONTHS HAVE PASSED AND WISH TO RETURN IN AN S3......
    (SSSHHH NOT TOLD WIFEY YET)

  9. #8
    "Stick a V8 in it!"

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    The RS4 has tonnes of uprated components over an S4, but the only thing i've ever heard failing on an S4 is the turbochargers, and its usually overspeeding due to boost leaks that kills them.

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  10. #9
    jq_quint's Avatar
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    Quote Originally Posted by aragorn View Post
    The RS4 has tonnes of uprated components over an S4, but the only thing i've ever heard failing on an S4 is the turbochargers, and its usually overspeeding due to boost leaks that kills them.
    Think maybe i'm getting over concerned about parts failure Aragorn, not even planning a remap till early new year...

    My engine has done 59k ish, so can I assume that 'most' bits, MAF etc (but especially turbo's) should not be on last legs anyway?

    Your point on boost leaks is interesting, how can boost leaks be checked on a routine maintenance basis?
    I SAID BYE BYE TO THE S4 , 18 MONTHS HAVE PASSED AND WISH TO RETURN IN AN S3......
    (SSSHHH NOT TOLD WIFEY YET)

  11. #10
    twostrokepower's Avatar
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    if your car is a a real 59,000 it should be in good health as long as it hasnt had same oil for 59,000 as is so important on a turbo car, as for boost leaks you can get a bung made which you can place on the y pipe and blow up to 15-20 psi on a tyre pump and listen for leaks found two on mine yestarday, 1 on throttle body needs new gasket between inlet manifold and 1 on clip just needed tightening

    simon

  12. #11
    jcb
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    as above.
    the RS4 may share displacement but not much else with the S4.

    59k is just a number, 59k on a motorway is totally different to 59k's worth of short journeys. and you are nearing the end of the timing belt lifespan

    as a matter of course I would want to see a recent timing belt, compression test, pressure test, check Recirc valves, new spark plugs gapped accordingly, turbo shaft play is a bonus but certainly investigate the seals and any amount of oil coming out of the turbos before you boost it to 300+bhp on a remap.

    but I don't like breaking things without knowing its my fault.

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    Quote Originally Posted by jcb View Post
    as above.
    the RS4 may share displacement but not much else with the S4.
    Layout and entire bottom end?

  14. #13
    jcb
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    yeah layout and stuff is basically the same V6 but if you compare the part numbers there are very few shared.
    Only take this from a chap on RS246 who has a spreadsheet of numbers for the engine and ancillaries.

    Think even the bottom end has some changes, it wasn't just the head that Cosworth timkered with.
    I am only repeating what the RS gurus told me though as I do 4 pots (I am lazy!)

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    just read the rs4 training book

    it has an "optimised crankcase for increased loads", cast steel crankshaft bearing caps, extended threaded sections from crankcase to cyl head, reinforced crank, piston pins rod bolts all adapted for the new forces.

    crank shaft is now made of steel with a 10% higher load capacity

    heads are altered... seems practically everythign is altered

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    I've had remapped cars and the mpg is OK but as said above the harder you drive the less the mpg.
    As for parts, as long as your services are up together and with that mileage it should be fine unless your doing track days every weekend and redlining it every were.

  17. #16
    jcb
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    Quote Originally Posted by Matt82 View Post
    heads are altered... seems practically everythign is altered
    that is why Audi bend you over even further when you want spares for an RS4!!

    Quote Originally Posted by OllyS4 View Post
    .... and redlining it every were.
    Is there another way to drive?...... :0

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    seems you get bent over pretty far for owning an S4. audi "S" tax is pretty severe

    mine with the remap is pretty frugal and genuinely meets audis claimed mpg figures. i think the new zorst etc might actually make it more efficient haha

  19. #18
    jq_quint's Avatar
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    Quote Originally Posted by twostrokepower View Post
    if your car is a a real 59,000 it should be in good health as long as it hasnt had same oil for 59,000 as is so important on a turbo car, as for boost leaks you can get a bung made which you can place on the y pipe and blow up to 15-20 psi on a tyre pump and listen for leaks found two on mine yestarday, 1 on throttle body needs new gasket between inlet manifold and 1 on clip just needed tightening
    simon
    defo genuine (with all reasonable checks done) and servicing every 8k with 2 owners, so off to a good start i think.

    Sorry to sound dense but where's the Y pipe? Any threads on this anywhere with pics you know of? Sounds like a good test.

    Quote Originally Posted by jcb View Post
    as a matter of course I would want to see a recent timing belt, compression test, pressure test, check Recirc valves, new spark plugs gapped accordingly, turbo shaft play is a bonus but certainly investigate the seals and any amount of oil coming out of the turbos before you boost it to 300+bhp on a remap.
    but I don't like breaking things without knowing its my fault.
    timing belt - booked for next week.
    comp test - can I use the conventional comp test tools on this engine (spark plug screw in turn engine over gadget)?
    pressure - ref simons comment, want to do this, more guidance needed though..
    Re-circ valves - how do i check these matey?
    Plugs - just had service 3k ago, but will check anyway.. (what should gap be?)
    Turbo shaft play - Whats easiest way to check, are they easily accessible?

    Quote Originally Posted by jcb View Post
    that is why Audi bend you over even further when you want spares for an RS4!!


    Thanks guys
    J.
    I SAID BYE BYE TO THE S4 , 18 MONTHS HAVE PASSED AND WISH TO RETURN IN AN S3......
    (SSSHHH NOT TOLD WIFEY YET)

  20. #19
    "Stick a V8 in it!"

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    Quote Originally Posted by jq_quint View Post
    Sorry to sound dense but where's the Y pipe? Any threads on this anywhere with pics you know of? Sounds like a good test.
    Its the big silver Y shaped thing you see when you open the bonnet...

    comp test - can I use the conventional comp test tools on this engine (spark plug screw in turn engine over gadget)?
    yep, might want to pull the fuel pump relay so you dont flood the motor.

    Re-circ valves - how do i check these matey?
    Just replace them, they're only about 20quid each

    Plugs - just had service 3k ago, but will check anyway.. (what should gap be?)
    0.028" afaik, the proper twin electrode plugs arent really gappable.

    Turbo shaft play - Whats easiest way to check, are they easily accessible?

    2000 A4 1.8T Sport Quattro Avant, Berry Pearl
    2000 A4 1.8T Sport Quattro Saloon, Black-ish
    1997 S4 - PPC £999 Challenge Track Car Build
    TD5 Land Rover Defender build


  21. #20
    Blue_Thunder's Avatar
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    Wouldn't bother wasting your time doing a compression check on a 60k S4 engine, it will be solid.
    Mo power, mo problems

  22. #21
    jq_quint's Avatar
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    Quote Originally Posted by aragorn View Post


    I take it that means no ! lol

    Thanks for your other pointers though...much appreciated..
    I SAID BYE BYE TO THE S4 , 18 MONTHS HAVE PASSED AND WISH TO RETURN IN AN S3......
    (SSSHHH NOT TOLD WIFEY YET)

  23. #22
    jq_quint's Avatar
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    Quote Originally Posted by aragorn View Post

    Just replace them, they're only about 20quid each
    Are these the reccomended re-circ valves Aragorn? :

    Bosch 0 280 142 114 (apparently upgraded factory 710N diverter valve from the Audi TT 225)

    If not what would you suggest?

    Thanks
    J.
    I SAID BYE BYE TO THE S4 , 18 MONTHS HAVE PASSED AND WISH TO RETURN IN AN S3......
    (SSSHHH NOT TOLD WIFEY YET)

  24. #23
    "Stick a V8 in it!"

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    aye we fitted some 710n's to craigs S4 and to our 1.8T

    2000 A4 1.8T Sport Quattro Avant, Berry Pearl
    2000 A4 1.8T Sport Quattro Saloon, Black-ish
    1997 S4 - PPC £999 Challenge Track Car Build
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  25. #24
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    i put new 710Ns on my s4 after reading how they were "better"

    cost me 23 each so im happy

  26. #25
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    I've always been under the impression that the Y-pipe was was the rubber hose under/in-between the diverter valves (Samco here on mine)....



    My 710N's......


  27. #26
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    y pipe is the big plastic thing thats y shaped innit?

    i cant see your picture, but are you talking about the throttle body boot thats on the throttle body?

  28. #27
    Blue_Thunder's Avatar
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    Yup - DanGliballs is talking about the TBB.

    Some RS4 owners refer to their respective part as a Y-pipe.

    But, generally, the Y-pipe is the big bastad on the top of the engine.
    Mo power, mo problems

  29. #28
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    crrrrrazy rs4 drivers

  30. #29
    jcb
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    is that Y thing Plastic?
    I assumed it would be aluminium at least!

  31. #30
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    the y thing on RS4s is actually aluminium.

    its is effectively atmospheric (or at a slight vacuum) so doesnt need to eb particularly strong)

  32. #31
    jq_quint's Avatar
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    Quote Originally Posted by aragorn View Post
    aye we fitted some 710n's to craigs S4 and to our 1.8T
    Quote Originally Posted by Matt82 View Post
    i put new 710Ns on my s4 after reading how they were "better"
    cost me 23 each so im happy
    Quote Originally Posted by Dan Gliballs View Post
    My 710N's......

    Thanks guys, so I can use this number with the dealer?:
    Bosch 0 280 142 114

    Or would you suggest an alternative source?

    Also Matt you say better, why is that?

    Thanks
    J.
    I SAID BYE BYE TO THE S4 , 18 MONTHS HAVE PASSED AND WISH TO RETURN IN AN S3......
    (SSSHHH NOT TOLD WIFEY YET)

  33. #32
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    was something to do with the diaphragm and the amount it flowed

    i did a load of reading and decided for myself but cant remmeber now

  34. #33
    "Stick a V8 in it!"

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    Stronger diaphram and stronger spring.

    If your going to order from the dealer you need tha audi part number which ends in 710N, hence the name.

    Asking for a DV for an S3 should get you the right numbers.

    2000 A4 1.8T Sport Quattro Avant, Berry Pearl
    2000 A4 1.8T Sport Quattro Saloon, Black-ish
    1997 S4 - PPC £999 Challenge Track Car Build
    TD5 Land Rover Defender build


  35. #34
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    i got mine from vw, so not a brand specific part

 

 

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