The other day my SES came on right after pulling a long hill and stayed on till I got to work and shut it off. I cheched the codes lastnight and there was a 78 - Wastegate Solenoid code. I have been using a homemade mechanical boost controller for a year or so and few months back upgraded to an F chip and removed the vacuum pump. I thought it was strange to see the code 78 and thought that maybe it was an overboost because it happened after pulling that hill? If I push it going up a hill I do see pressures up to about 12 or so.
Thanks,
Bob
Thanks,
Bob