Haha sifus in the house..Not very keen on the BOV sound,might find a way to vent the pressure back to the intercooler..thats still in consideration,but not important,as long as i vent it someway.

Actually,why is it that SVDO is un-tuneable? piggybacks cant alter the signals or that the ecu will revert to standard tuning if the signals are not within its acceptable range?
Throttle body will remain stock for the moment.
Any idea about the rating on stock fuel pump and injectors? I have an idea how much i will be needing,i just dont know how much i have to begin with.

Which is why everything needs to be right!

err .. whats SVDO ?

anyway, what i wanna say,catacombs cover edi ..

thicker headgasket, piggyback with ignition control if possible or stand alone, rising rate fuel regulator, fuel pump (maybe u wanna upgrade more some day ? ), the bov just dump it back in instead of atmospheric vent, bigger injectors, turbine sizing,intercooler.

svdo is the siemens ecu for the newer generation wira bro.

Bigger injectors and fuel pump i really want to know what the original values are so i can size an appropriate one with allowance for future mods.How to find out the stock values of fuel pump and injector size?

searching for the car stock spec or source workshop manual... i have a few proton workshop manual . but the one i had is around 5 years ago ..

change whole ECU evo unit one la. sure can read boost . mapping for 2.0 turbo sure fuel enuff . AFPR lockup at 5bar. ekekkee. full tank of petrol wud last for 100km

hey guys,seriousla..if you cant be helpful then better dont post at all.

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Added on November 4, 2008, 9:38 ami have the colt lancer workshop manual..it doesnt specify there either..hmm.think ill go talk to some sparepart shop fellas later and post it here.

This post has been edited by ryan_hustler: Nov 4 2008, 09:38 AM

if u not keen of BOV sound, can alwiz plumb back the output of ur BOV into ur downpipe.... this minimizes the sound....

yes... svdo is tuneable... involves changing the parameters/codes inside the microprocessor.... perhaps proton has the device.... but plugging in piggyback ecu aint gonna work for svdo....

injector size...
4g15 SOHC >> 180 and 182 (latest) cc/min
4g91 DOHC 210cc/min
4g92 SOHC >> 180cc (Proton) 190cc (MMC)
4g92 DOHC Mivec >> 275cc
4g93 SOHC >> 210cc/min
4g93 DOHC >> 240cc/min
4g93T DOHC >> 390cc/min

IMO, injector size 275cc will be more than enough for u....

evo ecu unit would not suit a 1.5L turbocharged engine setup.... first and foremost, engine capacity already not same... whats more the amount of airflow and volume that passes through throttle body....

boosting 2.0bar for 4g15 gonna last u for A GEAR... haha...

afterall the TS(modder) just simply calculate the Compression ratio. still dunno la the engine going 9:1 ka... 8:1 kaa... by using evo ecu(2.0L fuel maps) putting the engine on safe side. im sure the engine running rich. plus it wasnt too rich i guess. as the injector size + fuel pressure .. also play important part aite. if the pressure in fuel rail not too strong(i mean not supportive).. hehe one reason the combustion might a lil bit lean.. injector aint too big also lead a leaner af ratio. ... i just considering giving a suggestion so that ts wont stop by the roadside wit blown engine.

btw, i dont know much about the plug-n-playness of evo ecu to TS engine wiring tho...

i got a fren .. that BOT his GTI 4g93p, customized everything . TD05 bearing, boost 1bar+. bla blab la... but he never play with the engine internal.. but he totally replace his ecu using evo2/3 ecu ... his engine still safe n healty till now..

Im considering plumbing it back into the intercooler intake,but that will depend on the runner length.If the path is not acessible,then vent to atmo oly.not a big issue.

About the injector, i asked the workshop guy he said factory injector is 150cc

based on calculations, cc/min =(xpected bhp x 0.55 x 10.5)/4

for stock @84bhp =120cc
with 0.3 bar @100bhp =145cc

if ur info is correct about the injector size (180cc), its more than sufficient for current boost requirements.If you dont mind me asking,how valid is this date?

Care to elaborate on the bolded text bro?u mean reflashing the chip of swap it out for a diff set of maps? from what i learned (from you guys) stock ecu's cant be tuned,either get a piggyback or change to standalone.Other options would be swap the chip..

If you ask that mech to do the modification for you, you are going to be in a world of pain. Injector duty cycle has to be kept around 60%. Anytime it goes above 80%, it will start to overheat and jam. You can't run your injector duty cycle near 100% without anything exploding from your engine.

piggybacks can tune siemens without the need to change codes inside the microprocessor.. if u know how to =) just stay away from emanage and it can be done =)

However, piggybacks do not tune the ECU at all. It just changes the signal going into the ECU and tricks the ECU with a different reading. I don't call that tuning as you can't change the parameters of the original ECU mapping. Tuning capabilities are limited as it still relies on the original parameter of the ECU.

So, if the original ECU for NA runs on MAP, it most probably does not have maps for positive boost pressure and the piggyback will not be sufficient to correct this. Only and aftermarket standalone ECU can.

so, for svdo tuning better refer to the folks inside proton on how they tune the ecu... haha...

TS, ever consider swapping to supercharger??... u can jz use rising rate fuel pressure regulator.... jz like what powerzone did on their campro sc and 4g15 sc....

u'll reach max torque much early in ur powerband.... vr vr useful launching off traffic lights and zoom around town... kekeke....

I always heard that supercharger kit is expensive. I bet that's the reason TS going for turbocharging.

oh yeah PowerZone charged 10k for supercharged ... and i'm not really impressed with their project putra either ...

What TS wants is to mod step by step 1st, why don't you understand?it's even stated in bold and red colour
Wonder what you driving...

BTW, TS, 4G15 Auto here, interested on BOT for my wira as well, will keep an eye on this thread, haha...

dont waste money and time to bot ur engine...listen to me...

Hmm,not too intrested in supercharging cuz it doesnt seem efficient (not in terms of power,but the fact that its belt driven saps the power straight from the engine)
But then again,thermodynamics and all taken into consideration,the backpressure from the turbine sitting in the exhaust system isnt 100% efficient either,its just the lesser of the two evils.Besides ever considered fabricating mounts to place the supercharger inline with the crank?theres very little room for error..

BOT is not something i consider an easy project and im not really just gonna stick a turbo and go vroom,im more intrested in the idea behind it..working out the values,parameters and stuff.in the end of the day,im satisfied with any amount of improvement altho it may be insignificant to maybe a gsr or mivec user.im just trying to make a bit more out of what i have in a safe and reliable way..which is why im discussing it with other users and reading up on the concepts,the possible foul ups,and meeting other turbo and BOT users..

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Added on November 6, 2008, 5:21 amTo keep the duty cycle at 60% at max boost,the 240cc injectors fit the bill.I guess catacombs was right to suggestthe mivec injectors then..it will be runnug at 52% capacity..is this calculation right?

This post has been edited by ryan_hustler: Nov 6 2008, 05:21 AM

Correct but there is one problem. Without an aftermarket ECU, you will have problems controlling the injector while you are driving below 0 psi boost. The stock ECU cannot cope with the larger capacity and I won't be surprised to even see black smoke coming out even while you are idling. Even aftermarket ECUs will not be able to resolve this issue.

sorry sleepwalker i will have to disagree with u...please dont give advise based on myths.. just use www.google.com and search how many ppl are actually doing bots and using piggybacks to support it. with td04, the turbo will max out b4 the piggyback can lolZ!

agreed with ur first point partially, but still in effect.. the outcome is the same... its still called tuning since u TUNE the piggyback, and it manipulate figures to trick the ecu to gain the results you are after rather having it chipped or reflash or replacing it with a standalone are also options to consider... since piggyback tuning is tuned on the piggyback and not on the ori ecu, reverting a piggyback back to stock takes a matter of minutes. maybe my wording was a little incorrect , but what i am trying to say is that svdo can be tricked and certain piggybacks do work for it with the correct tuning techniques..

some piggybacks are flexible enough to allow you to add a turbo to an engine that was never designed to have one, It'll control extra injectors, boost, water injection, vtec/vvt functions, igntion, fuelling, it'll also take info from bolt on sensors, You can even select different maps for different circumstances, either manually or automatically. u actually use the piggyback to map out possitive boost pressure u dont need to map out on the ori ecu at all

using piggybacks to control small BOT mods like what ryan_hustler is doing is a very common thing worldwide, i dunno know why u say it cant.. its seems in malaysia alot of ppl have been misinformed to believe that piggybacks cant be installed on svdo/siemens, well all i can say is that its been done overseas for a long time, maybe certain ppl do this is to offer svdo users a more expensive equipment to milk more money out of it through the hardware and many many hours of tuning, i dunno.. or maybe they just dont know how to do it?? so what ever it is, its a possibility.. piggybacks can handle small bot upgrades, piggybacks can do alot more than most ppl think, my friend did a similar bot upgrade to ryans on a 2002 siemens gti, running piggyback only, its running fine =)

ryan_hustlerl, all i want to say is that if u put a bot on, piggybacks, ecu reflash, rechip and standalones are all options to think about but the choice u make is dependant on ur budget really...they all work each has its pros and cons!, if u need help with selecting the right ecu and good tuners that can easily tune a piggyback or any ecus in relation with ur mods, i can help direct u to the right people, however if ur wallet permits u, then obviously a standalone would be awesome =)

This post has been edited by FAibS: Nov 6 2008, 02:02 PM