the turbos aren't sequential (ie not primary and secondary), there are two turbos working in parallel - one turbo per bank of three cylinders given it's a V6 engine. The turbos are quite small, they are twin TD025 which is about 2/3rds the size of a TD04 on a 1.8L Lancer GSR Turbo. They should spool up just about instaneous from approx 2000rpm but will run out of puff towards 6000-6500rpm.
cheekychimp Director of Housing and Urban Development, and carbon/kevlar balls
posted 03/02/11 07:37 AM
Mine were off and running hard by 2500 rpms. Power does drop off in the upper rev range but I never noticed it as low as 6500 rpms, my recollection could be hazy though as I got my turbos upgraded. I'm also not convinced that power falling off at higher rpms is really an issue unless you are going so fast you are battling serious drag and or going uphill. After you overcome inertia it takes less power to keep you moving. As a rule of thumb if the rpms are rising steadily and you don't have any slippage (clutch on it's way out or spinning tyres etc) you should still be accelerating fine. I guess more power just means you accelerate faster but unless you have built an engine capable of very high rpms, that rev limiter comes up very quick!
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