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Old 01-16-2011, 02:29 PM   #6 (permalink)
Island_370
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Join Date: Jun 2009
Location: Puerto Rico
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Drives: 09 Nissan 370Z SR M6
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Quote:
Originally Posted by 98intrigue View Post
4 & 5) You probably won't see full boost until around 4000rpms. So the lag between 2000-4000rpms will be noticeable...but totally worth it once hit full boost!
Many people confuse turbo lag with turbo threshold. The lag is time to spool once in the right range. Essential on-off throttle in the upper range. The threshold is what rpm do you need to be at to start making boost. But the trade off (and EVERYTHING has a trade off) is that if you want low threshold and low lag, then you sacrifice max power up high. If you want max power (+800hp Supras) then you have a really high threshold and a narrow power band.

I don't know what the kits for the 370 offer. But my previous car was a biturbo. I always preferred the low lag and low threshold---at the cost of overall high end power. I spend very little time over 6K, so why pay money for a lot up there. I prefer to have the power where I use it most. And the low end grunt of small turbos is awesome!

If you want to wave a dyno sheet in people faces, then get a giant turbo(s) with 1500rpm of usable powerband.
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