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Discussion Starter · #1 ·
As titled- What kind of gains or losses would result from a ported 87mm throttle body without a tune?

I would think the ecu could handle the slight bump in air flow and adjust for it without requiring a tune.
 

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No tune required and the car will adapt to the small increase. Mixed reviews about the gains, with or without a Cam. Hard to tell if you get 5-10hp from the upgrade when the car is 370hp stock.

Everytime I mod the car I can tell I picked up something. Put the K&N CAI on and it planted my rear into the seat. LOL Got to justify the $$$ somehow.
 

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stock TB has more flow than your engine demands.....
 

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Discussion Starter · #4 ·
Probably true. The older GM ls1 5.7l had a small TB and even after market upgrades were smaller than the OEM charger.
 

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