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Message: <blockquote data-quote="evo5755" data-source="post: 3473642" data-attributes="member: 1644">Speedhorizon, Supposedly, All engine are designed to work under normal atmospheric pressure. But they are able to work under abnormal pressure condition due to the correction factor on the ECU mapping... And NA Engines (normally aspirated engine) also known as vacuum engine provide suction when the intake valve opens as the piston goes through the intake stroke. This will create a vacuum condition on the intake manifold. However, FI Engines(Forced induction engines) like Supercharged/turbocharged engine forced the air into the cylinder instead of suction from the cylinder. Let say, boosting at 1 bar into the cylinder(1 bar higher than atmospheric pressure) and being compressed till the top dead end, say CR10, the equivalent compression ration would be 20:1... NA means breath normally-suctionWell, NA means the air is forced into combustion chamber at atmospheric pressure. Whereas Turbo the pressure was forced into the combustion chamber, and henceit is called Forced Induction. The word speaks all...<img src="https://zerotohundred.com/forums/styles/default/xenforo/smilies/biggrin.gif"  class="smilie" loading="lazy" alt=":biggrin:" title="Biggrin    :biggrin:" data-shortname=":biggrin:" />Don;t quite agree with metal gasket. Thick metal gasket is just a way to reduce th e compression ratio. Instead of changing pistons that required more cost, time and hassle. If someone's gonna use metal gasket of 1mm, there's actually not so meaningful. If you buy original GSR topset from MMC, the gasket is also silicon carbon.Management is not so accurate. I would say the ecu mapping.Bro, ok ok haha...i was just writing all the general stuff. if really want to go deep detail for each and every item sure 10 pages also cannot finish writing hehehehe. The material could be the same, but the design of the rib bone of the engine might be different... Water cooling system in the engine block are the same, at least for mitsu... Dunno about others... But the water pump might have different capacity. Hoever, radiator are bigger as for some turbo charged engine. But not necessarily. Wira 1.6 Auto has the same radiator size even compare to EVO... However the fan are different.Material composition should be different. Perhaps in the real world, one example is VR4 block vs Evo block in terms of strength. In the casting process, there are so many types of casting materials which are meant for different factor( strength, heat and etc..). But as we can see, there is a lot of different specification between NA and turbo which are specifically designed by car manufacturer. As for me, BOV sound is just a so so factor for me. Doesnt makes me crave for that sound. For me its just like a leaking air sound hehehe...The only thing about turbo which i addicted to is, the screaming Ex Wastegate sound and most importantly the force that keeps on pressing your back or head to the back seat. G force factor hehehe..Bump: Bro...thankss for your information !!<img src="https://zerotohundred.com/forums/styles/default/xenforo/smilies/biggrin.gif"  class="smilie" loading="lazy" alt=":biggrin:" title="Biggrin    :biggrin:" data-shortname=":biggrin:" /> HEHE!!But...let say...we are just comparing this in street racing....not about F1 Formula...hard to compare with F1 Formula ler ^^cause...my friend and me had prove this comparition...aabout N/A and Turbo...My fren both are WAJA 1.8 Manual...one had done a lot of modification about N/A ^port a lot of polish^ ..throttle body..header...engine balancing and bla bla bla...about RM8-10k...another friend just bolt on turbo... wif TD05... and boosting about 7-8psi only... but...when they two race...it really MUCH DIFFERENT !! the N/A Waja..from start (pick up)until the end... also lose kau kau ler....the turbo waja really awesome !!<img src="https://zerotohundred.com/forums/styles/default/xenforo/smilies/adore.gif"  class="smilie" loading="lazy" alt=":adore:" title="adore    :adore:" data-shortname=":adore:" />In my advice... actually that is (NOT FAIR)...coz..one already had force induction ...can't compare with other is just N/A...Turbo ride should vs Turbo or s/c ride not N/A^^oh ya ~!!! PPL who modify their car...they all are loookinng for more POWER , SPEED , TORQUE !!but...if modify N/A same cost wif bolt on turbo...i really suggest ...TURBO KIT !!FAST AND FURIOUS!!and...turbo although will make engine overheat ....but... wont HARM to the engine ler ^^my car already bolt on turbo about 1 year ago...but still ntg effect ^^ HEHE!!anyway,,,THANKSS FOR UR SHARING !! CHEERRSS!!<img src="https://zerotohundred.com/forums/styles/default/xenforo/smilies/tee.gif"  class="smilie" loading="lazy" alt=":tee:" title="Tee    :tee:" data-shortname=":tee:" /></blockquote>Well Veilsideboyz again....Seems like you really love your BOT. Well i do not know what have you done to your overall engine system fro your BOT. heheheYes cost for NA is higher if you want to achieve the the same power level like turbo. But NA offer different level of engine performance, if you have driven a highly tuned VTEC or K20A powerplant you will know what i meant. Lagless and power delivery is different from Turbo. But what makes NA race engine vs turbo engine is realibility. It depends on your driving style, but definitely if the car is pushed continuously, turbo engine will have higher risk of reliability problem as per compared to NA engine. Try to drive your turbo car in Sepang push it hard for alot of laps. Then you can judge if your machine is realiable or not. <img src="https://zerotohundred.com/forums/styles/default/xenforo/smilies/biggrin.gif"  class="smilie" loading="lazy" alt=":biggrin:" title="Biggrin    :biggrin:" data-shortname=":biggrin:" />[/QUOTE]

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