Throttle body
Thread Starter
Drifting
Joined: Apr 2006
Posts: 1,278
Likes: 2
From: Lexington TN. Retired Navy
Throttle body
Just a quick question;
If I get my throttle body ported, then the computer will detect more airflow and compensate with more fuel - correct? If so, will that make the 02 sensors (or some other sensor) freak out a little and counter that result?
Its an 05 coupe, non zo6, A4, Halltech CAI, B&B cat back exh.
Thanks in advance
If I get my throttle body ported, then the computer will detect more airflow and compensate with more fuel - correct? If so, will that make the 02 sensors (or some other sensor) freak out a little and counter that result?
Its an 05 coupe, non zo6, A4, Halltech CAI, B&B cat back exh.
Thanks in advance
Le Mans Master
Joined: Oct 2014
Posts: 8,662
Likes: 2,721
From: Atlanta GA
No problems at all will be encountered ....the ECM has plenty of room to compensate for a ported throttle body .... but on a stock car you will not see any gain .....put the money towards a intake manifold or headers ....
Dave
Dave
Last edited by Dcasole; Dec 30, 2017 at 09:12 AM.
Race Director
Joined: Dec 2013
Posts: 12,500
Likes: 3,625
Yep, GM played with the inlet shape of the TB to get a good flow balance around the entire vain movement percentage openings.
With some porting, the flow is not longer even close to linear across the vain's travel positions, making the car much harder to drive in actual street type driving conditions (semi turning the TB into more of an on/off switch instead).
Hence before you go to have a TB ported, have them print out a flow chart of the TB flow volumes through the vain's opening percentages, then another flow chart of throttle percentages after it ported. In oem, the flow is pretty linear with the different TB vain positions, while in the ported TB, no very linear isntead.
Le Mans Master
Joined: Jan 2008
Posts: 6,457
Likes: 297
From: corpus christi Texas
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