What should I do for 4G93?

[mydvdrom]

I am driving a Wira 1.8EXi which is using 4G93 DOHC engine. Below are my upgrades to engine bay so far :

1. Center cat 2.3" and piping 2.3" straight through till back cat back
2. HKS Powerflow 200mm Air filter
3. Throttle body upgraded to MIVEC's which I think is over 60mm (anyone got any idea?)
4. NGK spark plug cables

Basically not much but I m thinking of getting it tuned as I left it unused for a few years and I find the engine not as powerful as it used to be. Am thinking of getting a piggyback for the ECU due to financial constraint. What sort of piggyback or electronics should I get? Last time might be a SAFC II or eManage. Any advices? I am hoping for a second hand piggyback if available.

 

[xtremeleo]

get an emanage and get a good tuner to tune it sir, i highly suggest joshua thiran of millennium motorsports for the tuning process. i can get a good price if u wanna get an emanage+installation+dyno tuning on the dyno dynamics. please pm for details, tq sir

 

[Mrnazmi]

Use TOMEI highcam, recently have in the market for 4G93, available in a few duration..
272, 280, 290, and 306 degree.. Sound also 'ganaz'..hehehe.
Use SAFC II for me its more easy to tune.
Make sure head already been port n polish for maximum outcome..

 

[wirahybrid]

bro, you said you left the car unused for some time right?? so i would suggest is a full engine rebuild or an overhaul (same thing happened to me, car was unused for 2 years and after a full rebuild including balancing, the engine now runs like new)... should not cost more than 2k(overestimating here incase you need to replace some expensive parts like the oil pump,bearings,belt auto-tensioner and etc) inclusive of new replacement parts with good workmanship... from my experience, there's no better way to start modding than to start off with a 'healthy' engine and if you still have enough budget, then i would suggest getting a piggyback. i would personally recommend e-manage but like Mrnazmi said, SAFC II is easier to tune but not as versatile as the e-manage... but it all depends on ur budget and how you wanna use it... happy modding

 

[xtremeleo]

wirahybrid, although what u informed are true, but i think he is working within a budget. i suggest running the engine first, and do some check up ie compression test to make sure the condition of the engine, then make plans whether rebuild is in order. get emanage for the management

 

[wirahybrid]

wirahybrid, although what u informed are true, but i think he is working within a budget. i suggest running the engine first, and do some check up ie compression test to make sure the condition of the engine, then make plans whether rebuild is in order. get emanage for the management

oops... missed out the budget part... if thats the case then what you said is appropriate.... btw, TS, do inform us your budget. that way most of the forumers will be able to guide you better and within your budget.. just my 2 cents n happy modding

 

[mydvdrom]

well, budget is important for me and i always like to get things done on my car for maximum effect with the least money. lolz. an engine rebuild will be too crazy for me at the moment. can't have car in workshop for long as i need it for work. and also the money involved. spent over 1k in changing my fuel system : tank, pump, injectors due to rust collected in them. lolz

i m thinking in the line of emanage as its the best budget piggyback around and more accurate and reliable than SAFC/2. though will need to connect to a PC to tune it unlike changing settings on SAFC module. i find my idling/ignition air fuel mixture to be unstable at times. that's why i m thinking of the above. thinking of adding a piggyback for now and if $ permits an engine rebuild or blueprinting later. wadcha guys think?

 

[xtremeleo]

blue printing? not needed imo, i prefer to do internals balancing jer.. unstable idle shows a couple of things, disconnected / wrongly installed vacuum hoses gives out erratic idle jugek. if u just wanna get rid of dat erratics, den going for a piggy back isnt the way to go. u need to get ur car checked up first sir

for more power within a bajet, i can pm u for dat, lol

 

[speed2horizon]

I am driving a Wira 1.8EXi which is using 4G93 DOHC engine. Below are my upgrades to engine bay so far :

1. Center cat 2.3" and piping 2.3" straight through till back cat back
2. HKS Powerflow 200mm Air filter
3. Throttle body upgraded to MIVEC's which I think is over 60mm (anyone got any idea?)
4. NGK spark plug cables

Basically not much but I m thinking of getting it tuned as I left it unused for a few years and I find the engine not as powerful as it used to be. Am thinking of getting a piggyback for the ECU due to financial constraint. What sort of piggyback or electronics should I get? Last time might be a SAFC II or eManage. Any advices? I am hoping for a second hand piggyback if available.

What kind of modification needs to be done depends purely on what kind of end result u're looking for and what kind of budget available on ur side.

And also what system/set up u're having now.

 

[kumar22mostwanted]

What kind of modification needs to be done depends purely on what kind of end result u're looking for and what kind of budget available on ur side.

And also what system/set up u're having now.

yeap yeap agree with sifu speed :top:

 

[speed2horizon]

yeap yeap agree with sifu speed :top:

Aiks... Since when I become sifu pulak...???

 

[mydvdrom]

any specific reason for unstable idling and ignition timing?

 

[speed2horizon]

Ur isc kong. Convert to ficd. Search one of my thread on how to convert ur tb into racing tb.

 

[mydvdrom]

my tb is already converted to mivec's

 

[speed2horizon]

my tb is already converted to mivec's

Not about what tb, MIVEC is also using ISC. Check the thread... Put some effort lor...

CLICK THE LINK BELOW.

HOW TO CONVERT UR TB INTO RACING TYPE.

Read it and u'll understand.

 

[xtremeleo]

iscv controls idle speed, coming from toyota it makes sure idle speed is constant, every single moment. a good mod

iscv = idle speed controller valve, the name shud give away the function, lol

i got it mixed up, lol. toyota uses FICD, i dunno what dat means, lol. dis thing makes sure idle is constant. my 4efte can idle at 600rpm constant je, shows how good the thing is.

 

[mydvdrom]

yeah i read ur thread oredi. u mentioned replacing ISC with FICD. isit shown in the thread? btw, i have added what my mechanic say is FITT which is a bunch of hoses and a valve to control timing when aircon compressor is activated. will take a pic when i m free and show u. so far it allows me to adjust the timing and also preventing my engine from stalling

 

[4G93NAPower]

interesting mod but why don't you just hook the FICD with some 10mm hose to the intake directly?

 

[xtremeleo]

sounds interesting mydvdrom, any pix we can share?

 

[speed2horizon]

iscv controls idle speed, coming from toyota it makes sure idle speed is constant, every single moment. a good mod

iscv = idle speed controller valve, the name shud give away the function, lol

i got it mixed up, lol. toyota uses FICD, i dunno what dat means, lol. dis thing makes sure idle is constant. my 4efte can idle at 600rpm constant je, shows how good the thing is.

Fast Idling Control Device

industrial term, it's just a solenoid valve

yeah i read ur thread oredi. u mentioned replacing ISC with FICD. isit shown in the thread? btw, i have added what my mechanic say is FITT which is a bunch of hoses and a valve to control timing when aircon compressor is activated. will take a pic when i m free and show u. so far it allows me to adjust the timing and also preventing my engine from stalling

But u got rough idle??

interesting mod but why don't you just hook the FICD with some 10mm hose to the intake directly?

1-The messy flying hoses pissed me up everytime I see them
2-longer hose will have slower response. Actual hose size is 8mm. 10mm will get lose very fast.
3-removing the water passage makes my engine lighter, since the water is used to prevent throttle freeze/jam in the winter n we don't have winter in Malaysia.
4-Without removing the ISC, it'll still run without control. Unless u unplug the socket.
5-doesn't wanna share too much vacumn line to the same source. It'll affect other devices that is sharing the same vacumn line if not connected properly.
6-want to maintain the blow off sound without having to drill another hole onto my IC piping.
4-