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Message: <blockquote data-quote="speed2horizon" data-source="post: 4350936" data-attributes="member: 30831">Re: turboe'd 4G15In my humble opinion, through my shallow knowledge, and some little experience... Nothing isu durable if modded halfway or incomplete or improper modification...As far as fundamental engineering is concern, we go back to the purpose the engine is designed for... Sorry, I'm not being offensive, but just imagine 30k on an EVO, what kind of result are we looking at, where every performance parts are cheaper and more durable... Sorry for interupting again... Of course, money and good reengineering is everything automotive is all about. But as a matter of fact, there are also economic way of enjoying what we are having on hand... Ok, for 4G15 BOT, U can look for 4G15 MAGMA pistons, which is a plug ang play low compression pistons for 4G15. On top of that, u can send ur valve for regrinding in order to achieve a turbocharged designed cam profile to reduce the overlapping so that u won't lose so much power at the low end. For fun purpose, MHI TD04L/GARRETT T25 is a nice turbo for street, but U'll expect the powerband ranged from 3k-5.6krpm. Nice for a 1.5 stroker up to 1.3 bars @ 6krpm. If the car is to be used on street as daily drive, I won't recommend a TD05 16G, I'd advise to go for a TD05 14B at most or a TD04 HL with 1.5 bar of boost... It'll lead u up to 160WHP-180WHP... Very nice for street with not so much lag...Management is something u really need when u turbocharged ur 4G15 as the ECU are mapped based on the Naturally Aspirated flow. E-manage is sufficient to control injectors up to 150% of the stock ECU defined capacity(cc). Higher than that, U'll face idle/low end rich problem. If you want to further increase or up boost, it's strongly advisable to have a set of injector harness and sub injectors for e-manage to handle access fuel requirement at full boost.Basically, ur engine will last. IF TUNED NICELY. If U've extra budget, go for standalones... U'll never regret one. The only reason for regretting getting a standalone is when U messed up with the tuner.Afterall, it's ok to BOT ur 4G15. Just my 2 cents opinion. Happ modding.</blockquote>

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Turbo Timer

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