Quote:
Originally Posted by harkes
Zero benefit in upgrading the turbo without tuning for it. I have ran on Stage0 map many times - you get same power as stock but way slower spool.
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It would make sense that peak HP and TQ numbers wouldn't change, but if one were to upgrade the turbo without a tune change, wouldn't the car hold boost better at high rpm after the upgrade, where the stock turbo taps out? For example, on my S2 logs, the boost target is the same 17.5 psi at 3000rpm as it is at 6000rpm, the only difference being I can hit the target at 3000rpm, but not 6000rpm. With the bigger turbo, wouldn't I be able to hit the 6000rpm boost target, thus making the car pull harder in the high rpms?