running lean
#1
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running lean
If my only mod was a full exhaust either turbo back with a highflow cat or no cat and a midpipe, would my car run lean and would there be a need to upgrade the ecu with a chip or get a fuel computer?
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The way I know it to be is if you have at the least a high flow cat than you should be fine if you controll the boost with a boost controller no higher then 10 pounds. If you run a catless then your asking for trouble if you don't upgrade the computer.
#4
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Technically with the boost at stock levels there is no problem. But in reality with full exhaust you would get bad boost creep and/or bad boost spikes. Even some boost controllers can have a hard time dealing with that. High flow cat would be a lot safer, with a DP, MP, and CB your asking for too much boost.
Evan
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