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Mapped s3 running 3bar fuel pressure regulator?

Discussion in 'A3/S3 Forum (8L Chassis)' started by darren t, Oct 31, 2012.

  1. darren t

    darren t Member

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    Hi my car when bought did have a 3 bar fpr on it I changed it too a 4 bar would this throw out the map by much ect as my pull inside car dosent feel as strong anymore??? Could it be this everything else is ok boost ect? Or is it me being use too car now!
     
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  3. superkarl

    superkarl MAN OF STEEL

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    yes.
    there is no need whatsoever to put a 4bar on. it will do nothing but screw with your fueling
     
  4. Broken Byzan

    Broken Byzan Photographic Moderator
    Staff Member Moderator VCDS Map User quattro Audi A4

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    It's supposed to have a 3 bar FPR on it. If it was mapped for a 3bar and you stuffed a 4 bar on, all that will happen is the ECU will attepmt to pull the added 15% fuel back out to make it back to where it should be. If it's not right, i'd suggest it's probably struggling to remove the fuel added by stuffing the 4 bar.

    Remove it and put the 3 bar FPR back in
     
  5. badger5

    badger5 www.badger5.co.uk
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    why why why why why why did you think this was a good idea?
    you have now added 15% more fuel than it wants.....

    put 3bar back on dude
    Pointless just chucking more fuel in.........
     
  6. Welly

    Welly VX220 SC Driver :)

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    A very good question....
     
  7. darren t

    darren t Member

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    I did this as my engine bay seemed very hot lol and I did bend a rod so thought my map was running lean and could keep temps down a bit I have had several problems ect all sorted now touch wood and just don't seem too have that kick it had!! Look forward too seeing what your rollers say on my car had 10 runs on midland vows rollers with let's say embarrassing results!!
     
  8. Welly

    Welly VX220 SC Driver :)

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    No-one likes those :(
     
  9. darren t

    darren t Member

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    Unknown map all I was told is it was running 320bhp pmsl on a hybrid k04 with a standard manifold but turbo was replaced before I bought car by garage I bought from with a standard ko4 turbo I have receipt ! So my guess is map was killing engine thinking it had a hybrid ko4 on I have since forged engine and put a hybrid ko4 back on!
     
  10. darren t

    darren t Member

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    And doesn't fell like it did with a standard k04!!! Thought it would be a big kick of power at 3000 rpm??? My boost. Isn't meeting requested since I've had it back from engine shop compression back I did wind actuator off too wear in new rings adjusted now but can't get it too reach 1.7bar ??? Cantons hold only holding at 1.3 spikes at 1.5 ??? Map wants more so I've adjusted actuator half a turn no difference leak??? Does hold the 1.3bar??? And was holding 1.7 on same turbo with low compression??
     
  11. Prawn

    Prawn My other car is a MINI!!!!

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    1.7 bar is HUGE boost mate. No map should be asking for that much.

    I'm sure there will be a clear picture on Sunday after the RR runs :)
     
  12. darren t

    darren t Member

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    What requested boost would vag .com be asking for ie what's 2550 mbar=psi?
     
  13. darren t

    darren t Member

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    As midland vow did say my gauge was well off?
     
  14. darren t

    darren t Member

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    Prawn does your car be
    at s3 s for fun I rebuilt my old one no map put boost controller on and it was fast with a k03s running 195 bhp before map my mate had it got a proper map on last week made 215bhp at midland vw with 255lb blew up yesterday pmsl wanted too race him 2wd is defiantly more fun!
     
  15. superkarl

    superkarl MAN OF STEEL

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    thats the max the map sensor can read. 1.5bar
     
  16. Prawn

    Prawn My other car is a MINI!!!!

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    2550 is the most the MAP sensor can read, minus ~1000mb for atmospheric pressure it's 1.55 bar which is 22.8 psi :)

    Yes, all of them :laugh:

    To give you an idea, on my conservative 300bhp map, due to the low weight, a road going S3 would need 395bhp to match it's power:weight ratio.

    It's nippy enough :)
     
  17. <tuffty/>

    <tuffty/> Badger 5 Edition...Its all about the flow...
    Staff Member Moderator Audi S3

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    :eyebrows:

    <tuffty/>
     
  18. s3dave

    s3dave TFSI Hybrid
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    [​IMG]


    :bye:..........:haha:
     
    S3_OL, badger5 and Yohan87 like this.
  19. Prawn

    Prawn My other car is a MINI!!!!

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    Yes PT, we all know you've got 413bhp and would muller just about anything short of the Badgerwagon itself! :laugh:

    Let me have my moment at least. haha.
     
  20. <tuffty/>

    <tuffty/> Badger 5 Edition...Its all about the flow...
    Staff Member Moderator Audi S3

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    Probably nearer 420/430hp now the boost is fixed... although with a flat battery, a borrowed MAF sensor and no MOT you stand a chance currently :D

    <tuffty/>
     
  21. badger5

    badger5 www.badger5.co.uk
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    and a certain little lupo
     
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  23. Reesy

    Reesy Well-Known Member
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    Quoted For Truth.
     
  24. burns3

    burns3 Member

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    And a certain yellow and black one that's just moved up north ;)
     
  25. Prawn

    Prawn My other car is a MINI!!!!

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    haha, is the Lupo actually quicker than Pauls S3 then? I've still not been in the infamous lupo of glory yet!
     
  26. badger5

    badger5 www.badger5.co.uk
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    he he

    ;)
     

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