Basic Intake and Exhaust Modification Guide, for normal aspirated cars v1.0
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 Dec 19 2011, 06:57 PM
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#81
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QUOTE(Jajay Chong Hon Keat @ Dec 19 2011, 04:02 PM) I have found a shop which can help me to convert but need around 3k >.< Will 4g15 same weight as 4g91? You mean same engine but just convert to fuel injection? |
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Dec 20 2011, 01:52 PM
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#82
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3k like not so worth doing it......
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Dec 20 2011, 08:42 PM
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#83
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QUOTE(Jajay Chong Hon Keat @ Dec 20 2011, 03:05 PM) Yup... Will fuel injection have a lot of problem compare to carb.? That depends what is wrong?Other then that, even petrol filter is more costly. You may need stronger fuel pump also and all that.... |
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Dec 21 2011, 09:51 AM
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#84
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QUOTE(the_catacombs @ Dec 20 2011, 11:54 PM) depends on how "out of tune" is ur current carburetor setting... in most case, it only gives smoother drive compare to carburetor.... if ur carburetor is well maintained and tuned, i see no reason why fuel injection will be more superior... Well said..... the only reason for people to convert fuel injection is that if the carburetor no longer able to support the change in engine setup... for example, increased in displacement, using aggressive cam profiles, forced induction... increased in displacement... for aisan carburetor, fuel jets are not interchangable... they only have such limited tuning frame to work with... on higher revs, it might not be able to supply enough fuel to the engine... aggressive cam profile... on fuel injection, fuel trimming with absolute control on ignition timing is vital in producing proper fine tuning for an engine to run aggressive cams.... i'm talking about cam degree way above 292deg.... without fuel injection management, ur engine might not even able to maintain revs in idling... forced induction... for obvious reason, air delivery into engine is not linear compare to naturally aspirated engine... sudden surge of boost needs sudden additional supply of fuel into the engine... u cannot do that with carburetor... well, at least not with high boost pressure...  With mod, I would easier to do with ECU, can override, can piggyback, whereas Carb is difficult. Only option maybe Weber aftermarket Carb. to increase fuel feed.... |
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Dec 21 2011, 10:52 AM
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#85
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QUOTE(Jajay Chong Hon Keat @ Dec 21 2011, 10:05 AM) If I want save petrol and also increase my power, what can I do now? Same as in the air filter discussed in another topic.Better flow less filtration, Better filtration less flow, so save petrol less power, increase power then more petrol.... Cannot have both leh......  |
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Dec 21 2011, 11:18 AM
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#86
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QUOTE(Jajay Chong Hon Keat @ Dec 21 2011, 10:58 AM) Fuel injection really can't help me meh? Fuel injection actually helps to monitor more correct air fuel ratio. Air flow sensor sense more air, then ECU will pump in more petrol and so on. It can help slightly in FC, but in power wise, as bro. catacombs mentioned, if carb tuned correctly also have the power..... |
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Dec 21 2011, 05:28 PM
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#87
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QUOTE(mADmAN @ Dec 21 2011, 02:26 PM) with great power comes great typically la... |
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Dec 21 2011, 11:14 PM
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#88
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QUOTE(Jajay Chong Hon Keat @ Dec 21 2011, 10:07 PM) What happened arh? Set up or settings problem? I suspect your right foot heavy.....   |
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Dec 22 2011, 03:37 PM
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#89
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QUOTE(Jajay Chong Hon Keat @ Dec 22 2011, 01:27 AM) NGK G-Power Platinum Spark plug~ I think bro. cata means the inside of the spark plugs. Whether sooty, black, brown, greyish color?Added on December 22, 2011, 3:37 pm QUOTE(shinjite @ Dec 22 2011, 08:41 AM) Why your piping 1.6" but the rest of your stuffs are like 2"?  Added on December 22, 2011, 3:38 pm QUOTE(Jajay Chong Hon Keat @ Dec 22 2011, 08:44 AM) Only bullet and muffler inlet only... Extractor don't know... Yup, Inlet standard size, have to join properly 1.6" size to 2"..... This post has been edited by vr2turbo: Dec 22 2011, 03:39 PM |
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Dec 24 2011, 02:09 PM
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#90
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Carb got carb pros and cons, EFI got EFI peos and cons......
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Dec 24 2011, 08:05 PM
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#91
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QUOTE(Jajay Chong Hon Keat @ Dec 24 2011, 02:36 PM) Yup... If the ECU got problem, the car cant start at all normally. If your carb have problem also same thing mah......hahahahhaa  |
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Dec 25 2011, 06:07 PM
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#92
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0 posts Joined: Oct 2009
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QUOTE(shinjite @ Dec 25 2011, 03:19 PM) There are no best of both worlds bro I think he is still a little confused.....  |
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Dec 25 2011, 06:31 PM
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#93
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QUOTE(Jajay Chong Hon Keat @ Dec 25 2011, 06:21 PM) Yup. I wish to change engine but my parents Parents are like this, care about you mah.......  me because they scare me   You still young, take your time doing it up, maybe by that time you can afford to, you can buy one instead of mod one. Of course if new cannot get at first there are older Evo 6 and 7 that you can look if not some Subaru WRX ver. 6 or 7.....  or cheapest is get a VR4 like me....... |
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Dec 25 2011, 08:05 PM
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#94
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Which one? Dream sure is the 35, but older 33 also good to play with.......
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Dec 26 2011, 10:32 AM
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#95
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QUOTE(Jajay Chong Hon Keat @ Dec 25 2011, 08:12 PM) Confirm always stay for the latest one mah... Last time 33, now 35, future maybe 37? Good, good at least you are looking ahead...... |
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Dec 26 2011, 08:41 PM
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#96
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0 posts Joined: Oct 2009
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Why going back to original??
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Dec 27 2011, 04:40 PM
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#97
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As far as I know changing the rear sports muffler back to original will make your high end slower as exhaust gas cannot go out fast enough. Maybe change to a quieter sports muffler mentioned by the members....
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Dec 27 2011, 08:04 PM
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#98
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0 posts Joined: Oct 2009
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QUOTE(Vervain @ Dec 27 2011, 06:36 PM) I'm planning to go 2inch piping from down pipe to muffler. One shop quote me 750. Is this acceptable? Or the price is too high? No mid bullet, just flexible pipe,sst pipe and muffler. NA, right? wonder why no mid box? |
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Dec 27 2011, 08:11 PM
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#99
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QUOTE(samwongjyhhorng @ Dec 27 2011, 08:07 PM) 1st the mid and rear setup was use the mfa..after tat i found it very noisy so i change the 9inch bullet instead of midbox..the sound become silent a bit..after i oso change to other type s flow muffler which more silent(tat using nw)...my car exhaust sound will be a bit louder after 110kmh..so at highway my wife dislike the sound lo..hehe I had the same problem last time when use my turbo for outstation, at more then 110kmh, the drone of the muffler will get to you after some time. So later on, all outstation travel use wife's car.....  |
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Dec 28 2011, 10:24 AM
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#100
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QUOTE(Jajay Chong Hon Keat @ Dec 28 2011, 08:39 AM) Actually I have just changed my exhaust system Actually for any mod, needs to fine tune also......no long time ago... Will I need to retune my carburetor? |
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