How lean does adding test pipes actually make the AFR mixture?
#16
Increasing the volumetric of the effeciency of the engine, without adding additional fuel, will cause the engine to run leaner in open loop mode (WOT or heavy loads on the engine). How lean.....it would all be speculation. ![Smilie](https://g35driver.com/forums/images/smilies/smile.gif)
Like Jeremy said, just put it on dyno and get it tuned, once you are done doing your NA mods.
![Smilie](https://g35driver.com/forums/images/smilies/smile.gif)
Like Jeremy said, just put it on dyno and get it tuned, once you are done doing your NA mods.
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