4G15p - can do something on this plant?

Discussion in 'Car Modification' started by bimasakti, Jan 15, 2008.

  1. bimasakti

    bimasakti Senior Member
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    Guys, newbie here. i'm driving a wira se 1.5 (m). can anyone tell me how much power can push to limit for 4g15p? i'm not planning to do engine swap or slap on turbo (due to crazy fuel price nowadays :mad: ), but planning to bolt on some goodies such as performance air filter, volt stabilizer, spark plug power cable and iridium spark plugs. what do u think? is it worth to invest on those items? how better the performance?

    2) also planning to change my suspension kit to lowered type. prefer lower60%+comfort40%. if budget not more than rm2k, which brand and type u guys recommend? :hmmmm:

    3) what are the differences btween oil catch tank and fuel regulator? how does they works? sorry aa guys..maybe noob question..:adore:

    thanks a lot!
     
  2. papagoines

    papagoines Orang Tua
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    I'm not otai...newbie oso...but some of the things you've mentioned; either I'm using it or my close friends did...so feel free to shoot me if I'm wrong :adore:

    1. Go for exhaust upgrade first...meaning from extractor till end...sometime, noisier doesn't mean more power
    2. then go for open pod filter...but make sure it got heat shield (u can see and example here in my engine, the one around the yellow thingie and K&N Filter)so ur engine does not suck in hot air...if got Cold Air Intake (CAI) its better
    3. iridium spark plugs and power cables maybe gives a bit of power...but dun expect much
    4. voltage stabilizer..hmmm...been using those....as far as perfomance goes...small diff only...I've noticed only my headlamp are a bit brighter and my car stereo plays a bit better only
    Other than that...you can always use lightweight crankpulley and if got money u can go for one of those reprofiled cam from powerzones,matspeed etc...and lastly...air fuel controller e.g. safc to tune air/fuel after you've done all to the mods...

    Most brands offers what you want within the budget u specified...for me, am using GAB (kancil RM1300 full set)...and so far satisfied with it...try asking around

    Oil catch tank - to catch oil vapor from engine head to ur intake via ur PCV hose....you can find DIY tips here

    As for Fuel pressure regulator, it regulates fuel pressure (dunno what PSI) to the fuel rail. All fuel injected car are equipped wif one, albeit it is set to a connstant pressure from factory...the aftermarket ones are adjusttable...usually used if you are running turbo (hi boost) and bigger or additional injectors...in term of your query...dun think its useful, better get ur air/fuel mixture tuned instead

    That's what I know...let's wait for the real sifus to give their multimillion 2 sen :adore:

    FYI,
     
  3. hoxy

    hoxy 15 Year | Platinum

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    I use same car as you. Basically if you press gear two or three there is a lag in throttle response. Iridium spark plug will help this problem, I chose heat range 5 Denso. Definitely you need to de-cat. Dont put performance plug cable, I think no difference and it interrupts with your sound system. If you want it, I have those plug cable bought from GTR, the RAM 10mm Quadcore performance cable and Stromberg. Here is the link http://www.zerotohundred.com/newfor...dcore-plug-cable-stromberg-power-booster.html

    haha... advertising a bit... but honestly, dont buy performance plug cable, waste of money, for looks, sure cun.
     
  4. ken12292703

    ken12292703 Drives a shopping cart...
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    Hi bro, if i were you. :biggrin: I will go slowly.

    Like siifoo papagoines said, AIR FILTER + COLD AIR INTAKE + FULL EXHAUST

    Then i will look for a set of 15 INCHES LIGHTWEIGHT WHEELS and throw all my unwanted items off. Those which needed don't throw la.

    I will choose sport springs + OEM absorbers instead of adjustable absorbers. I believe that's your daily driven car, go for chassis reinforcement bar would be appropriate.

    Spark plugs won't give much difference in terms of power. Keep it for later plans.

    If yours a manual transmission, go for a lightweight flywheel. This is a bang for bucks modification, you can feel the difference in response. It won't increase your engine's power but decrease the momentum build up time.

    Adding all up, example CAMS + SAFC + etc etc = engine transplant :rofl:

    Stick to a limit, beyond that, better plan for a transplant now. :biggrin:

    Just my 1 cent :rofl:
     
  5. papagoines

    papagoines Orang Tua
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    dun like that la...i'm still learning lor...kang marah real sifus of zth nanti :bawling: :adore:

    Forgot abt dis....most of my WiSE frens just swap those 16" for 15" 2nd hand frm japan and downgrade from 205 series to 195 series tires...keeps ur car lighter...accelerate better + better FC...
     
  6. ken12292703

    ken12292703 Drives a shopping cart...
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    You sifoo also, don't hide hide la. :adore:

    Sifoo here very good one. Don't worry :rofl:

    I scared also la. :burnout:Run~
     
  7. kk_shiang

    kk_shiang Senior Member
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    Better engine oil , correct viscosity is also important in ur engine.
     
  8. boyzone

    boyzone Senior Member
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    go to engine balancing, performance clucth set and flywheel if budget allowed. :biggrin:
     
  9. GT_AUTO

    GT_AUTO Senior Member
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    light tune should be enough for daily driven car.
     
  10. bimasakti

    bimasakti Senior Member
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    waa thanks a lot guys.. :adore: not expect that gonna be too much to consider. i'm totally new in car modding.. by the way, thanks again.
     
  11. papagoines

    papagoines Orang Tua
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    Wait for me!!!! :burnout:

    :hmmmm: curious though...how much is it to do engine balancing/blueprinting?...if too much the ringgit/hp cost...better he go for transplant rite?

    maybe u should stick to bolt on like filters and exhaust...save ur money for later mods like a turbo kit or better yet full transplant to Mivec or GSR like master ken12292703 sez
     
  12. tofu_manic

    tofu_manic Senior Member
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    bimasakti, actually for the moment, u dont really have to upgrade ur ignition yet (e.g. cables, plugs, coil) as ur engine is still stock...wont make a worthwhile difference...stock ignition is sufficient...unless ur ori one is already wearing out la hehe

    if i were u i wud go for a K&N drop-in filter element (or anything similar, UTR ka etc. etc.) as u dunneed to worry about sucking in hot air edi, unless u wanna spend more to get a heatshield for your open pod, etc. etc.,

    u can get freer flowing exhaust by increasing slightly the piping size to around 1.7 - 1.8 internal diameter following ori route and de-catting (the original header is a good one, for the time being dunneed change, proven to increase a coupla hps at around 3xxx-5xxx rpm by dyno, on a stock non-SE wira 4g15, if i remember correctly)

    as had been suggested earlier, a lightened crank pulley from mythelogy (as this is the only model that wud work on ur car, i think), flywheel lightening and balancing...and get smaller 15 inch rims...at least these mods wont break ur bank (other than the rims, mebbe) and will make driving more fun hehe

    internals are a whole different story already...and prepare a lot more cash for that...whacking at least 150 horses is not impossible...if u want to la...there are ppl who would push their ori engines to see just how far the small powerplant can go...

    btw, here is a stroker kit mod for you, requires full overhaul duh heheheheh
    http://www.zerotohundred.com/newfor...necting-rod-and-crankshaft-waja-for-sale.html
    increased low-end torque and stronger mid-range rpm, very worthwhile mod this one hehehe

    im using a carbed version 4g15, non-SE so i dunno much about the wira SE's piping size, details and so on, if anything incorrect or irrelevant, please correct me hehehe

    happy modding!

    p.s. got many similar threads like these in zth, can find out more stuffs from there as well
     
    #12 tofu_manic, Jan 16, 2008
    Last edited: Jan 16, 2008
  13. seanlee

    seanlee Senior Member
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  14. bimasakti

    bimasakti Senior Member
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    papagoines,

    what i know is 4-1 extractor is better from 4-2-1 type..is that true? anyone can explain.. :hmmmm:

    have heard also that some types of open pod filter need to change/refill their filter sponge (apexi, hks or k&n maybe?). is there any pros n cons?

    hoxy,

    yaa youre correct, theres a lag in throttle response in gear 2 or 3. err..what is de-cat means actually..:adore:

    ken12292703,

    will the combination of sport springs + OEM absorbers will effect tear&wear of bushings or something? if doesnt..hmm will thinking this option. quite save rm..:burnout:

    GT auto,

    yes, this is my daily ride and not expect too much on top speed.. just wanna improve my traffic lights run, a bit power la.. :rofl:
     
  15. bimasakti

    bimasakti Senior Member
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    err..maybe some of above question already answered by tofu manic. sorry for overlooked..hehe:biggrin:

    ooo i see..mybe forgot to mention, that my ride currently is 4 months old from the register date..so everythings still fresh (or maybe not, after long sun-bathing at glenmarie proton's depot store). hmm but now i get some bigger picture.. thanks guys!! :burnout:
     
  16. seanlee

    seanlee Senior Member
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    if you are looking for daily use...and just for the pick on the traffic light..

    this seeting shuold be nice....

    1)4-2-1 extrator (if you are original Wira SE it come with good Mendrel bent extrator been improve and dyno proven from my friend car Low rpm to mid power)
    if you wan to use 4-1 extrator is not recomend due to respond start at 3k rpm above you need to high rev it....Sohc engine does not build for high rev..is build for low rev only...

    2) get a 1.6 clutch set with lighten flywheel (normally people will lighten is to same wegiht of 1.5 clutch set...but then have to lighten more again..for lither then 1.5 clutch set.

    3) lighten crank pulley install for siemens car.

    4) get your car for port and polish and skim the head not more then 1mm for daily use...if not you will face overheating problem.

    5) wira Se original piping is 1.75" mendrel bent and very smooth air flow good enuff and yet mendrel bent piping ain cheap..also it produce good power...
    if your car doen not comes with mendrel bent...get yourself a 2" piping internal should be 1.78 or 1.8" depend on the thickness of the piping.

    6) do not use OPen pod for siemens wira 1.5 you will face loosing torque .... stick back the box use K&N , UTR or others high performance high flow filter.

    7) Cam degree...get 262,265 or 268....this is from MAtspeed for siemens car..do not go over 27x degree...you will facing idle problem which can`t solve in siemens ecu..

    8)spark plug, you can use CAmpro engine spark plug is smooth enuff ..no need get those irridium...those actually for longer life span.. honest speaking..

    9) suspension got many type..if normal daily use not racing or anything..get a ready make sport spring and must goes with sport absorber....

    any infor need to add? you guy can add..hahaha:thefinger:
     
  17. papagoines

    papagoines Orang Tua
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    nicely put....

    by the way sean...read ur mod page... :adore: :biggrin: :adore:
     
  18. biz-da-tech

    biz-da-tech Senior Member
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    guys actually me and this guys also start mod from everything new :P,

    im using 4g13p SOHC. i guess im using mitsu ecu.

    mayb he see this mayb this could help him and me.

    here my mod done.

    4x2x1 extrator and bullet [shot type] {cap ayam}
    and den small size exhaust [smaller den the arospeed exhauster]

    and cam pulley adjustable arospeed

    spark plugs and spark cable [both item around 100Rm]

    and tunning cam adjustable.

    after tunning, and the mech told me that they cant tune to the fine max tunning. because got knocking sound. fuel not enuff supply,

    and he recommended me fuel regulator, so i just ask around a 1 to 3 mech. 1 told me fuel regulator will fix, and 2 told me fuel pump.. so i wonder which 1 is the best to fix my knocking sound?

    [my style is save gas and fast :P] means that i dont want mod it and it eat more... so far all those mod i made. it give me safe a bit gasoline.

    so all sifu... which 1 will fix :) and ya also before change my car hit once 180km/h only extrator and bullet. but now close 140km/h my car drag SO LONG to 160km/h and it canot more den that anymore....

    any help for my car can fast go to 160 to 170 at lease and max is 180km/h ...
     
  19. Northiswara

    Northiswara Senior Member
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    my 2 cents opinion for 4g15p.

    1. hantam in 4g13 head then u get 0.3 more compression. around 0.3 if not mistaken.

    2. hantam in aggressive camshaft. i think power zone got. or go matspeed.

    3. hantam in 1.6 stroker kit from powerzone then u have 1.6 cc.

    4. hantam in 4-2-1 extractor.

    5. throw ur mid mufler and rear mufler. hantam in a nice bullet and performance muffler.

    6. hantam in iridium spark plug.

    7. get ur head to port and polish.

    8. upgrade the valve spring.

    9. hantam in weber carburator if u are carb engine. if EFI then hantam in more power fuel pump, bigger injector and tune with SAFC NEO or other piggy back ecu.

    10. hantam in open pod.

    11. hantam in bigger TB.

    12. change ur cam pulley to lighter one.

    13. upgrade to semi racing clutch or hantam in GSR flywheel and clutch system.

    u will get at least 144whp with above setup. cozs there is a 4g15p with almost similar setup as above and get 140++ whp.

    14. hantam in NOS if u are using EFI then u can get 160-180whp then u can tapau vtec.
     
  20. Northiswara

    Northiswara Senior Member
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    bro,
    change to mivec engine easy larr. no need to dismantle and change this and that to ur engine. moreover 4g15p block canot tahan extreme modification.
    later overheat or crack susah.
     

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