Actually no, no adverse effect's whatsoever. It can always benefit due to fuel pump degradation over time of a stock pump. Normally we go by pulley sizing and rear wheel power when recommending the time to go with a BAP. We recommend anything over 750+ rwhp or smaller then a 3.500" SC Pulley it is needed. Granted there are guys making more then that safely without one but that is our safe margin and what we feel is safe from there.Thanks! Would there be any adverse effects by adding a JMS Boost-A-Pump?