after ThrottleBody cleaning and retune ...top speed decreased ...help .

[darrengoh89]

145kmh to 150 kmh only ...coz im using 4-1 extractor ...gonna change the extractor to tuned 4-2-1 from zenden ...then there's a air leakage on my muffler ...but later on only change ler ...mid bullet zenden maybe next month or next 2 months

 

[Yong_5290]

if say top speed also memang 4-1 better 1 wat...4-2-1 is better for low n mid powerband
tats y u c vtec all running 4-1 coz the wan all the power at high end rev

 

[darrengoh89]

ok sry yong ...err ..not to say im acting pro ..haha ...really ..juz telling you from what i know lor ..coz last time i used to work in honda for 2 years ...and im very kamching with anyone there ...including the service manager ...everyone also told me that 4-1 is for low end rpm ...and now im working in volvo ..even the mechanic also saying that 4-1 is for low end rpm....this is base on what i heard from them la ...or maybe im wrong ..and they are wrong too =X

 

[E-Tech]

Darren
Maybe just ur ear heard wrongly...
Nevermind lah....
By the way you are Sales person or technical person in Honda/Volvo?

 

[darrengoh89]

im under body and paint 1 ...untill now still yes ...honda usj and volvo jln 222 body and paint also link together 1 ...e tech also say that 4-1 is for top ? then maybe i heard wrongly gua

 

[E-Tech]

Darren,
Wat i'm saying is Yong has a point.
My b series also runing on 4-1....

 

[darrengoh89]

but how come my 4-1 is good in pick up but high end rpm damn slow ...hmmm ....weird ...=/

 

[damone]

If you change your extractor and see the design, you will know why it is slow at high end. And compare with aftermarket 4-1 extractor.

 

[darrengoh89]

i see ..but if i use aftermarket tuned 421 ...it won't ruined my top speed right ? example ...top speed is 180 ...it won't decrease till 160 or 170 ?only slower in high end rpm right ...?

 

[Yong_5290]

u c.lets say 4-2-1 range power is around 2k rpm till 5k rpm...4-1 is for mayb say 4k n above

 

[darrengoh89]

ok ..i get what you mean ...thx for your information bro yong ...

 

[damone]

4g13 max 160 only la tai lou.

 

[darrengoh89]

im juz giving an example only ler tai lou ..no need shoot me like that geh ..haha ...then how come there's some 4g13s also can go till 180 1 =.= stock engine wor ...

 

[E-Tech]

Wah... still not end to this top speed issue?
Maybe cylinder head already go problem....
What's the milege on your car darren?

 

[darrengoh89]

80+k mileage .... cylinder head got problem can achieve more top ar =.= lol ....got suchthing 1 ?

 

[Yong_5290]

4g13 max 160 only la tai lou.

ya ar? my fren iswara take vr vr long time but still reach 200kmh

darren..aim for pick up power la...not every road also u can top speed 1 mah...sumore if 180kmh got anything happen kantoi lo....last time my satria testing top speed rear tyre burst...the whole tyre fly out left 2 sidewall with the rim...lucky it was rear...the car still controlable...if front mayb i hit dunno wat edi

 

[darrengoh89]

wow ..lol ...so kua cheong o.O ...k ..thx for your advise ...hehe

 

[damone]

Well, I'm saying based on factory specs. Not that I have tried to go further then 160km/h. Sayang engine woo.

That's what I said. Focus on pick up for daily driving. After exhaust, can upgrade to 1.6 clutch for better bite, and lightened crank pulley. Should be enough for a mild mod, and an enjoyable drive.

Remember to upgrade braking system also.

 

[darrengoh89]

ohh okayhh ...whats the usage for crank pulley >?

 

[damone]

Google is your friend bro.