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how to modified 4g91
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<blockquote data-quote="alvin24" data-source="post: 535056" data-attributes="member: 63"><p>vernoz,</p><p>4-2-1 extractor try get powerzone or hotbits wan... they're more accurately tuned. Cap ayam is not tuned, they just make it for the stainless steel looks... and personally if u ask me, I don't think it makes a difference... our OEM also memang 4-2-1 liau lar... powerzone ones are LENGTH TUNED 4-2-1 extractors... hotbits i not so sure, but I've used it before and it does help.</p><p></p><p>Metal gasket 0.5mm will make your compression higher... so you'll be getting a very much more responsive engine... needless to say the power is better lar, can feel wan... but u'll need to retune your fueling for slightly richer feeds... coz' its getting 'hot in there' with the higher compression.</p><p></p><p>2" outer diameter is okay... should be somewhere around 1.85" inner diameter... but perdana muffler is OEM woh... a bit restrictive... why not get a higher flow back box? Whether its single or twin tip i think doesn't make a difference... its more for looks only if i'm not mistaken. Performs equally as well.</p><p></p><p>HKS air filter.... opt for the high flow drop in filter. If you're going open pod... make sure u have a heat shield and a proper cold air intake system... else ur performance would drop rather than increase.</p><p></p><p>Grounding cables... yes it does make a difference, especially if u play audio. If u don't play audio... the difference won't be significant... meaning u probably won't notice much difference before and after... but its actually better. Stabilizes your electronics a lil' better, and u got less power loss (no not in terms of hp... but electricity).</p><p></p><p>TIEN springs = comfort + looks</p><p>Sensatrack = almost OEM absorbers</p><p>So the combination will make your car lower, and more towards comfort... so its going to be a bit soft... so if you're going to use it with 16" wheels... it might hit your fender on fast corners or speed bumps. So get ready so send your car to the mudguard shop to fold in the fenders! =) </p><p></p><p>16" BSA rims... ok lar... a bit on the heavy side... but to me, what matters most is the design, whether u like it or not. Thru my experience, from 13" ---> 14" --->15" --->17" rims... the power loss is significant lar (at least to me lar, on my 4G91)... but I changed back to 15" for comfort reasons. I have a hard suspension setup and its killing me on 17"s!</p><p></p><p></p><p>Advice? Best advice I can give... have fun modding! =)</p><p>And ALWAYS try to find out everything that you can about a mod before doing it, in case if later u regret... its not good wei!</p></blockquote><p></p>
[QUOTE="alvin24, post: 535056, member: 63"] vernoz, 4-2-1 extractor try get powerzone or hotbits wan... they're more accurately tuned. Cap ayam is not tuned, they just make it for the stainless steel looks... and personally if u ask me, I don't think it makes a difference... our OEM also memang 4-2-1 liau lar... powerzone ones are LENGTH TUNED 4-2-1 extractors... hotbits i not so sure, but I've used it before and it does help. Metal gasket 0.5mm will make your compression higher... so you'll be getting a very much more responsive engine... needless to say the power is better lar, can feel wan... but u'll need to retune your fueling for slightly richer feeds... coz' its getting 'hot in there' with the higher compression. 2" outer diameter is okay... should be somewhere around 1.85" inner diameter... but perdana muffler is OEM woh... a bit restrictive... why not get a higher flow back box? Whether its single or twin tip i think doesn't make a difference... its more for looks only if i'm not mistaken. Performs equally as well. HKS air filter.... opt for the high flow drop in filter. If you're going open pod... make sure u have a heat shield and a proper cold air intake system... else ur performance would drop rather than increase. Grounding cables... yes it does make a difference, especially if u play audio. If u don't play audio... the difference won't be significant... meaning u probably won't notice much difference before and after... but its actually better. Stabilizes your electronics a lil' better, and u got less power loss (no not in terms of hp... but electricity). TIEN springs = comfort + looks Sensatrack = almost OEM absorbers So the combination will make your car lower, and more towards comfort... so its going to be a bit soft... so if you're going to use it with 16" wheels... it might hit your fender on fast corners or speed bumps. So get ready so send your car to the mudguard shop to fold in the fenders! =) 16" BSA rims... ok lar... a bit on the heavy side... but to me, what matters most is the design, whether u like it or not. Thru my experience, from 13" ---> 14" --->15" --->17" rims... the power loss is significant lar (at least to me lar, on my 4G91)... but I changed back to 15" for comfort reasons. I have a hard suspension setup and its killing me on 17"s! Advice? Best advice I can give... have fun modding! =) And ALWAYS try to find out everything that you can about a mod before doing it, in case if later u regret... its not good wei! [/QUOTE]
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