help me with 4g91 DOCH

[syahizad]

i just convert my car with 4g91 doch..

1. so nak tau la. piping berape inchi yang sesuai.. nak piping macam mana.
2. throtle body aku rosak... so alang2 nak tukar.. aku rase nak masuk 1.8 punya..

harap .. semua yang ade idea.. atau ade cadangan lain ke..boleh la bagi suggestion kat aku..bantuan amat la dihargai..

 

[Blowfish]

Bro, if you going for straight piping, the the diameter should not exceed 1.8 inches. If follow original route, then 2 inches is no prob.

Kalau tukar TB, best you put 93 1.8 TB. Sudah memadai la. response is much better. But also more effective if you change to 1.8 intake manifold.

 

[syahizad]

thanks a lot bro..
so what else should i do?

 

[Fluffy]

dont forget ur intake..

 

[boyzone]

lighten flywheel ....

 

[syahizad]

lighten flywheel.. already done..
intake mainkan peranan ke.. aku tanye mech.. tak de perubhan pun..

is that true?

 

[partyJOE]

rebore yr 4g91 intake to 56mm to yr TB... cheaper alernative...
cost abt 45buck to rebore...

 

[streetking]

my friend say at puchong got speedtune performance corner, may be he can help you. may be you can visit the website www.speedtuneperformance.com

 

[syahizad]

thank...
so.. now i'm looking for tuning.. anyone have idea??
my location.. lumut (perak)

 

[speedoSTAR2099]

u can also go for 4G92 Mivec's trottle body along with the exhaust manifold....and if u got extra cash....get urself a Mivec gearbox.....then u'll have LSD too....

 

[supernatural]

piping should not be exceed 2.0 inch. i think 1.8 inch is just nice.
TB u can use 1.8 or MIVEC.

 

[boyzone]

for NA vise, there is limitation on this engine, and this engine is not consider performance engine, they are design for economy and comfortable engine. better keep all the modification money and go to change a better performance engine. 1.5l no matter how u mod it, is limitation..... unless u mod in turbo.

 

[partyJOE]

for NA vise, there is limitation on this engine, and this engine is not consider performance engine, they are design for economy and comfortable engine. better keep all the modification money and go to change a better performance engine. 1.5l no matter how u mod it, is limitation..... unless u mod in turbo.

i agree... save money 4 mivec or turbo if u r looking for performance...

 

[syahizad]

wahhh.... want to change engine again ha... ?? hehehe
i just change my engine... dont have money lohhh... for this time.. 4g91 enough. :D

got problem.. sometime when u push the clutch pedal.. engine mati.. why?

anyone got experience?

 

[boyzone]

I also face this issue before, few items u need to check :
1. ISC
2. TPS voltage reading
3. any vacuum leaking

I have solved my problem after re-setting on my TPS. And I had sent a mail to RPW regarding this issue, and what they reply is to check on ISC and TPS sensor functionality.