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Message: <blockquote data-quote="sideksepakragabulat" data-source="post: 1064439939" data-attributes="member: 118177">yup..but top end power suck big time..my car hp now drop after 5500rpm..for city driving yes it fun but when i hit high rpm on the hiway the engine sound like it on the edge of breaking apart..sound 'perit'..with my previous turbo i can easily reach top speed and the engine sound just fine..now just to hit 140km/h mark is a hard work..the reason i swap to a bigger turbo becos my previous turbo don't produce any power increment after 1.5 bar..so i was thinking a bigger unit will produce more power at the same boost level..but with smaller turbine housing i got an opposite effect..i've done comparing my dyno sheet..it seem that my td04hl with smaller turbine housing produce 90hp @ 1.2 bar..i got -+90hp with only 0.8-0.9 bar using my old turbo..i've done some research and found out that my td04hl have a big inducer compared to other popular td04 ppl put into L2s engine..i would like to maximise dis advantage and it seem not working so well with a small turbin housing..i was targeting to boost around 1.5 bar and if it can produce -+130hp i'm a happy man..it seem a waste if my turbo can only produce power around 5000rpm only becos L2s engine popular among k-car lover for their ability to withstand high rpm level..so can anyone tell me how much spool time effect with every 1cm^2 of increasement?my td04hl-3cm^2 start spool around 2200rpm..so with every 1cm increase how much time i sacrifice my spool time?</blockquote>

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