sorry to resurrect an old thread, but....
I have a sual-SBC in another car - which does what it says - but looking at the boost profile on the dyno, at full boost it's a spikey line, rather than a flat line - which would suggest the SBC is having trouble holding boost at the preset. Further more while driving, the boost is not consistent - sometimes under WOT my guage shows less than the preset max boost, yet the gauge memory shows the correct max boost has been achieved. Oh, and I'm not running scramble boost or anything like that - just gain and ratio.
So I thought of getting a Profec-B - but several of the dyno tuners here say they've had to send a lot back on warranty cos they just stop working and they no longer sell them, even though they are cheap.
So any suggestions as to what to get?? - the AVCR's look good, but pretty pricey....

opcorn: