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2011-2014 Mustangs
Power-Adders
2.3L Whipple owners in Houston
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<blockquote data-quote="NickSezz" data-source="post: 13948391" data-attributes="member: 137423"><p>Honestly is sounds like this might be related to who calibrated the car after the injector swap. A relatively easy way to tell would have been to swap injectors and try the old tune and see if it fixed the problem. The pulley size is really not a factor here. </p><p></p><p>The way you are describing the movement on the bypass sounds normal. There should be a slight preload on the lever arm when its mounted and adjusted properly. </p><p></p><p>There are tables in the tuning software for throttle delay that may need some tweaking. You will get a lagging effect if this delay is too long or if the throttle opens too fast. When these tables are changed fuel timing also has to be changed to come in quicker/slower depending on the adjustment. </p><p></p><p>As for only hitting 6psi, that is lower than what I would expect. Did you take this reading before or after you messed with the bypass? We normally re-rout the vacuum line for the bypass to see boost. That way when under pressure it ensures that the valve stays closed. </p><p></p><p>Good luck!</p></blockquote><p></p>
[QUOTE="NickSezz, post: 13948391, member: 137423"] Honestly is sounds like this might be related to who calibrated the car after the injector swap. A relatively easy way to tell would have been to swap injectors and try the old tune and see if it fixed the problem. The pulley size is really not a factor here. The way you are describing the movement on the bypass sounds normal. There should be a slight preload on the lever arm when its mounted and adjusted properly. There are tables in the tuning software for throttle delay that may need some tweaking. You will get a lagging effect if this delay is too long or if the throttle opens too fast. When these tables are changed fuel timing also has to be changed to come in quicker/slower depending on the adjustment. As for only hitting 6psi, that is lower than what I would expect. Did you take this reading before or after you messed with the bypass? We normally re-rout the vacuum line for the bypass to see boost. That way when under pressure it ensures that the valve stays closed. Good luck! [/QUOTE]
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