What are the advantages of throttle bodies? When should you look to upgrading to them and what effect does this have on the car?
All petrols have throttle bodies (bar BMW's Valvetronic 4 cylinder petrols which uses variable valve lift to control air intake), In general it's one per engine or one per cylinder bank. What you're all talking about is separate throttle bodies, one per cylinder. They take some effort to maintain balance between cylinders so personally I'd no bother.
Try balancing the throttle plates on a pair of SUs mounted on a BL O-Series 2.0 unit and you'll know what I mean.
Anyway, why would anyone want carbs when EFi is so much better, simpler and more reliable??
Because they are more fun to play with, can sound much better on certain engines and are old school which a lot of people prefer.
Only a pair? when playing with DCOEs I was trying to balance 4 carbs
. I like multipoint EFi and it's maintenance free diveability
For the daily runaround, couldn't agree more.
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