under power 1.5manual wira

[dirtnitro]

Hi,

i have added a full body kit and spolier, and a 17 " rim for my wira 1.5 manual, milage is 100k. modification are done for the past few month :
1. CAI
2. APEXI open pod
3. DENSO iridium spark plug
4. air charger
5. ngk spark plug cable.
6. CAT remove

it have been running fine till recently it look under power, so change HKS 5w40 engine oil, still the same . last time should be 3000rpm at 100km/hr. after the speedometer been replace with a 2nd hand is 3000rpm at 90km/hr,(as my speedometer is spoil) the meter face has been replace as the old one is a black face and my existiing is a white face.

so now i dun knw wher is the problem lie, as i am thinking of modify the exhaust but if that is not the cause, then no point modify some more.

PLEase HELP!!

 

[boyzone]

17 inch sport rim sure will give u under power in 1.5 engine.

 

[xteiner]

change the rim to 15' , don't try to change your muffler bigger as it's a stock engine...just my point my view...=D

 

[boyzone]

I think 14 inch sport rim is even better. : )

 

[dirtnitro]

thanks for the info, but very heart pain to trade my 17" with a 15" rim. will changing the extractor to 4-2-1 and changing to straight muffler help? thanks!

 

[GT_AUTO]

it will help slightly.

 

[dirtnitro]

Thanks all of u bro, I have change the extractor to 4-2-1 it have a increase in pickup and i have try using higher octane petrol that make alot of diff, guess if i put 15" rim, it definitely will fly!! thanks for all yr info!

 

[GT_AUTO]

try n install a steel 14" wheel.it's like getting 10hp for free.hehehe...

 

[boyzone]

no.. suppose to say 14 inch ultra light weight sport rim ...

 

[dirtnitro]

really ? but my car look a bit funny with full body kit and small rim like 14" , here is my car


but maybe i will go for 15 inch

 

[dirtnitro]

will it look funny with smaller rims?

 

[GT_AUTO]

that's ur car ar dirtnitro??i think no need to change the wheel la.it will
kill the look of ur car.try increase ur car performance instead.

 

[boyzone]

just go to bolt on turbo...

 

[dirtnitro]

Ya, that why i change a 4-2-1 extractor and change to striaght muffler, fyi, cannt do much here in singapore, cos u guy should know the rules here, Sigh!!!

 

[ocean]

Ya, that why i change a 4-2-1 extractor and change to striaght muffler, fyi, cannt do much here in singapore, cos u guy should know the rules here, Sigh!!!

thought 4.1 is for pickup .. and 4.2.1 is for speed .. which one correct ??

 

[GT_AUTO]

4-2-1 for low to mid,4-1 for hi-end.

 

[dirtnitro]

4-2-1 for low to mid,4-1 for hi-end.

YEs!!! the difference is there when i change from 4-1 to 4-2-1, pickup increase, but with lighter rim, i think it will perform better

 

[dirtnitro]

yes, this is what has been done to my car so far

 

[GT_AUTO]

not bad bro.is that a custom air box???

 

[^wind^]

nice mod, bro...

how's the effect after installed open pod + CAI + heat shield?

last time i tried open pod without CAI n heat shield...
feel power is not enuff during daytime especially noon...