16v 'bangs'

  1. Frequent Poster Joined: Dec 2012 Gravesend, Kent Posts: 727 106 GTi, MK2 Saxo VTR, Corsa C SXi,
    #1
    Something ive always wondered... every 106 GTI or VTS (16v engine) i've come across bangs when changing gear (with exhaust system obv!) whats the reason behind this? now this isnt no chavvy WHY DONT MAI VTR BANG LAIK VTS I'm just curious as i dont think I've ever seen a VTR do the same thing! Is this to do with the 16v system or what? like i said, just curious! think its gotta be one of the VTS/GTi's best traits!

    THis is an example -
  2. Saxperience Post Whore Joined: Nov 2010 Kent Posts: 8439 Gen 7 Celica 190.
    #2
    Because 16v.
  3. Frequent Poster Joined: Dec 2012 Gravesend, Kent Posts: 727 106 GTi, MK2 Saxo VTR, Corsa C SXi,
    #3
    Bcozracecar.

    Nah seriously is that the reason? Always been curious
  4. Saxperience Post Whore Joined: Nov 2010 Kent Posts: 8439 Gen 7 Celica 190.
    #4
    Because16v dude.

    8v can not produce a wet fart let alone a bang
  5. Saxperience Post Whore Joined: Apr 2011 Posts: 9100 Amazon green VTR 16v, Inferno RS clio 182
    #5
    Depends on the 8v! haha
  6. Frequent Poster Joined: Dec 2012 Gravesend, Kent Posts: 727 106 GTi, MK2 Saxo VTR, Corsa C SXi,
    #6
    Quote:
    Originally Posted by Cam View Post
    Because16v dude.

    8v can not produce a wet fart let alone a bang
    Pmsl! Now that i dont find hard to believe

    Seems all the 16v's do it! 16v noise in car though.. epic!
  7. Newbie Joined: Oct 2012 telford Posts: 23 Poseidon Blue Saxo VTS Turbo 2003, Diablo Red 106
    #7
    Induction kit, Straight through exhaust and 421 manifold, bang away fella lol
  8. Infrequent Poster Joined: Mar 2012 llanharan Posts: 178 saxo furio c2 gt conversion
    #8
    just stripped all of the back of my saxo out (seats,sound deadening) and with the decat saxsport every time i changed gear i jizzed haha
  9. Established Member Joined: May 2009 pboro Posts: 1442 Saxo 1.4 furio Now Saxo 1.6 VTR
    #9
    I didn't hear any bang?
  10. Frequent Poster Joined: Dec 2012 Gravesend, Kent Posts: 727 106 GTi, MK2 Saxo VTR, Corsa C SXi,
    #10
    Bang/pop whatever you want to call it when he changes gear, they do it everytime if your giving it the beans, stealthdog - You can see i have all that from my signature dude
  11. West Midlands Joined: Dec 2007 West mids Posts: 23149 Supra,civic GL
    #11
    Its down to the fueling
    There is a moment where the throttle sucks air but the ecu/injectors havent responded
    At high rpm this causes a bang through a moment of lean running

    Same happens if you get up to 5k+ and as the car runs down tap the throttle itll bang
  12. Frequent Poster Joined: Dec 2012 Gravesend, Kent Posts: 727 106 GTi, MK2 Saxo VTR, Corsa C SXi,
    #12
    Quote:
    Originally Posted by AlexB View Post
    Its down to the fueling
    There is a moment where the throttle sucks air but the ecu/injectors havent responded
    At high rpm this causes a bang through a moment of lean running

    Same happens if you get up to 5k+ and as the car runs down tap the throttle itll bang
    I thought it would be the other way round unignited fuel suddenly igniting then bang, but i thought it would be fueling due to the 16v system, and what do you mean? take to 5k dip clutch and blip throttle, or keep clutch engaged and lightly tap or what? I've heard about Saxos banging from blipping the throttle, never tried it mind, my old car used to bang on overrun/changing gear but that was a 16v not an 8v
  13. West Midlands Joined: Dec 2007 West mids Posts: 23149 Supra,civic GL
    #13
    Clutch engaged just tap
    It momentarily allows in air and the ecu doesnt have chance to respond with fuel

    My vtr banged with a pugsport
  14. Frequent Poster Joined: Dec 2012 Gravesend, Kent Posts: 727 106 GTi, MK2 Saxo VTR, Corsa C SXi,
    #14
    Oh right gotcha, tap so the car doesnt jerk too much i guess haha! I've got a Saxsport on my VTR so basically the same thing, decatted too.. well, it will be, the cars half done on axle stands but come down with the lurgy so i'll sort that when my mega dose of manflu fades
  15. Saxperience Forum Bum Joined: Sep 2010 leeds Posts: 4389 MCS R53 S/C 16v furiooo
    #15
    my furio bangs so its not just 16vs HOWEVER it does over fuel a little bit so that might be why

    i'll have 8 more valves very shortly anyways so wont bother me
  16. Established Member Joined: Sep 2011 Ebbw Vale Posts: 1180 Clio 182 Daily, 106 GTi Track Project
    #16
    My vtr pops quite a bit, wouldn't say it bangs though.
  17. Frequent Poster Joined: Dec 2012 Gravesend, Kent Posts: 727 106 GTi, MK2 Saxo VTR, Corsa C SXi,
    #17
    Quote:
    Originally Posted by mlawlan69 View Post
    my furio bangs so its not just 16vs HOWEVER it does over fuel a little bit so that might be why

    i'll have 8 more valves very shortly anyways so wont bother me
    Oh yeah granted its not just the 16v's all cars run differently! but it seems every VTS/16v I've come across (with exhaust system/decat obv) they bang on the gear change regardless if the exhaust is supersprint/magnex/sportex/saxsport etc, and ooooh lucky for some fella!
  18. West Midlands Joined: Dec 2007 West mids Posts: 23149 Supra,civic GL
    #18
    If you really want proper bangs

    Get an omex limiter/launch controll
    They make rather good bangs
  19. Saxperience Addict Joined: Jan 2008 west london Posts: 13810
    #19
    when warmed up by car pops all the time. 4 inch peco backbox ftw
  20. West Midlands Joined: Dec 2007 West mids Posts: 23149 Supra,civic GL
    #20
    Quote:
    Originally Posted by LSOfreak View Post
    when warmed up by car pops all the time. 4 inch peco backbox ftw
    Least if anyone rear ends you your safe as theyll just drive up it
    2 users thanked this post: ,
  21. Frequent Poster Joined: Dec 2012 Gravesend, Kent Posts: 727 106 GTi, MK2 Saxo VTR, Corsa C SXi,
    #21
    Quote:
    Originally Posted by AlexB View Post
    Least if anyone rear ends you your safe as theyll just drive up it
    Or inside it!
  22. Saxperience Hardcore! Joined: Mar 2008 Posts: 31279 Citroen Saxo VTS, S60 D5
    #22
    Ive had some goodens going up gear and some loud ones going down gears *crackle, pop etc.

    Its good on a hoon but if you're pottering about the town its abit embrassing. slowing down to a junction, down a gear *bang braap... how awkward
  23. Newbie Joined: Oct 2012 telford Posts: 23 Poseidon Blue Saxo VTS Turbo 2003, Diablo Red 106
    #23
    Sorry pal, wasn't paying attention lol
  24. Saxperience Addict Joined: Jan 2008 west london Posts: 13810
    #24
    Quote:
    Originally Posted by AlexB View Post
    Least if anyone rear ends you your safe as theyll just drive up it
    lol!..
  25. Saxperience Forum Bum Joined: May 2011 huddersfield Posts: 2635 ph3'd c2 gt
    #25
    mt quicky, well when it was a quicky popped and banged like fuck!!
    letting off from the throttle from 5k+ and just a slight tap of throttle let off not pops but seriously loud bangs, that just echoed everywhere!

    sounded awesome
  26. Frequent Poster Joined: Dec 2012 Gravesend, Kent Posts: 727 106 GTi, MK2 Saxo VTR, Corsa C SXi,
    #26
    Prickle i know what you mean good when you want it to happen haha and haha sweet ali
  27. Saxperience Forum Bum Joined: Jan 2003 Scotland Posts: 3380
    #27
    a few reasons ,mian one is dia of exhaust and unburnt fuel which self ignites in the ex --the cat would stop this as would a std type silencer system--the baffles in std system stop this hapening
    std is ecu well over rich at full throttle as it is not lambda controlled at full throttle ,so any over richness --which all cars have as std ,will leave unburnt fuel in ex --add some more air as you close the throttle(ecu has cut fuel -but engine is still eating air) momentatarily and the mixture goes leaner in the ex to a point where the heat+ unburnt fuel is just right to make a spontaneous combustion -- eg a little fuel /air bomb
  28. Super Moderator Joined: Nov 2009 Cambridge(ish), UK. Posts: 10581 BMW 5x M50d.
    #28
    Quote:
    Originally Posted by axsaxoman View Post
    a few reasons ,mian one is dia of exhaust and unburnt fuel which self ignites in the ex --the cat would stop this as would a std type silencer system--the baffles in std system stop this hapening
    std is ecu well over rich at full throttle as it is not lambda controlled at full throttle ,so any over richness --which all cars have as std ,will leave unburnt fuel in ex --add some more air as you close the throttle(ecu has cut fuel -but engine is still eating air) momentatarily and the mixture goes leaner in the ex to a point where the heat+ unburnt fuel is just right to make a spontaneous combustion -- eg a little fuel /air bomb
    I can totally see you doing this coming up to traffic lights John
  29. Infrequent Poster Joined: Dec 2012 droitwich Posts: 177 Silver - Mk1 Saxo VTS
    #29
    Quote:
    Originally Posted by AlexB View Post
    Least if anyone rear ends you your safe as theyll just drive up it
    LMFAO! Made my day haha
  30. Saxperience Forum Bum Joined: Mar 2007 127.0.0.1 Posts: 4826 oem+ sax
    #30
    I loved it when changing gear and bang! piper seems to be the best for this.
  31. Frequent Poster Joined: Dec 2012 Gravesend, Kent Posts: 727 106 GTi, MK2 Saxo VTR, Corsa C SXi,
    #31
    2" Saxsport is the best ive found for it so far!