Pardon my ignorance. I've read a lot about the BPU thing. It seems to me that the one obvious upgrade is just doing the downpipe.
Correct me if I'm wrong, but this removes both of the CATs, so gives a nice power upgrade. It does this without the complexities of wiring-in boost controllers, and the fuel-cutoff defeating that is then required. I nice thing for someone looking for a boost but who doesn't want to "mess" with the car too much.
Again, correct me if I'm wrong, but the only downside is that the Supra TT has 2 O2 sensors, and all the downpipes have facilities for only one (why????), which causes your check engine light to come on. This SUCKS, of course. Now I hear of a "black box" that fixes this one drawback?
Correct me if I'm wrong, but this removes both of the CATs, so gives a nice power upgrade. It does this without the complexities of wiring-in boost controllers, and the fuel-cutoff defeating that is then required. I nice thing for someone looking for a boost but who doesn't want to "mess" with the car too much.
Again, correct me if I'm wrong, but the only downside is that the Supra TT has 2 O2 sensors, and all the downpipes have facilities for only one (why????), which causes your check engine light to come on. This SUCKS, of course. Now I hear of a "black box" that fixes this one drawback?