not necessary burn more fuel....coz your fuel burning inside the piston and engine block...but when you use the wrong piping for your car...will end up let your engine suffer...lagging or no backpressure...therefor fuel need to burn more due to pedal press harder...Changing the exhaust will leads to more fuel burning?
if standard 4g15, like gt auto sed, not much of a difference but u can opt for a size up to 1.8 inch no prob, 2 inches for major mods oledi...hallo...
how about standard 4g15p...???
they just wanna keep the torque due to 4g15 is sohc & 1.5liter nia....oh guys..not to forget...about hot air flow faster...cold air flow slower...if too big for the piping..alot energy will be lost during the flow ..... but yet therefore some workshop for POwerzone they recomend on his car which is 4g15 with 120hp..is actually runing on 1.6" inch only.... coz they wan to remain the heat of the gas to flow faster due to more heat more energy...
Thanks GT_AUTO. Any other opinions, about the piping size, bullet type selection and the 'preng' sound when revving the car?since u said there's improvement on ur car,leave it.psychological or not,
only u know the answer to it.
when mech said is 2"..normally internal was 1.78"...so no worryHello. I'm using Wira Sedan manual 1.5 injection without engine modification.
Recently, i had upgraded my exhaust system. The modifications are:
1. 4-2-1 Extractor
2. Exhaust pipe 2" with bullet - According to the mechanic, the size is 2". (Manufactured for wira 1.5 with headers).
3. JamSpeed Twin-Tip S-Flow Muffler
I'm a little worried that you all said that the maximum exhaust pipe for 1.3-1.5 Wira is 1.78". What should I do? My fuel consumption is improving, and top-speed is increasing. Before changing the piping, I already installed 4-2-1 extractor, and when I change the exhaust pipe to 2" i've noticed that the car is much 'lighter' when i press the as pedal. Or is it just psychological effect?
On the other hand, i've noticed a 'preng' sound when i rev the car coming out from the muffler. Is it caused by stronger exhaust gas due to larger exhaust piping? What should i do? Should i installed another bullet with the existing bullet or discard the existing bullet and replace it with a new bullet that can absorb the 'preng' sound? What kind of bullet should i use? Normal bullet or spiral bullet? What is the advantage of spiral bullet? I'm still keeping the standard exhaust pipe with me.
Thanks.
2.0" would be nice for mivec 1.6....tumpan tanya ya..
recenly my wira mivec is finish but wit ori 1.5 piping anyone can suggest wat kind of piping i need to mod or no need mod in addition my mivec is an auto trans. I don't like those loud sound so silent ,fuel saving and power( imposible la right??) is my aim.
Thanks seanlee. How about the 'preng' sound when i rev the car? The mech suggested to me to add another bullet to absorb the sound or retain the exhaust gas a little bit. What kind of bullet should i use? Normal or the spiral one? Where should i install the new bullet, just after the built-in bullet or alongway the built-in bullet? Thanks.when mech said is 2"..normally internal was 1.78"...so no worry
usually the rear muffler that produce that sound.maybe built quality is low.Hello. Any sifu here that can help me with the preng/tin can sound that my muffller produce. Is it caused by the muffler or the bullet? Need advice from you all. Thanks.
2.5" is suitable for ur engine.since this topic is alive back..
i also wanna ask few question.
my car is wira gsr. engine is stock modification. so what is the best size for my piping... i scared those exhaust shop conn me.. haha
ty
no need kot kot...hehehe...ur right mar.std gsr,2.5" is enough unless u modifiedstraight piping 2.5 from nanas to the muffler shud b okay kot for gsr... :P