well, besides the obvious of being illegal and hurting your ability to pass emissions testing....

too much flow results in loss of backpressure which can hurt your low end.

If you have post 96 OBD-2, this will screw with your O2 readings that are after the cat.

-Rob


Robert Gorrell
1995.5 Isuzu Rodeo - SAS'd and SOA'd, sitting on 38x13 TSLs, spooled D60 front, 14bff rear locked by detriot, high steer w/ hydro, dual Isuzu tcases.