so, is it just me or it is.....
so, is it just me or it is.....
I have the Vishnu Stage 1+ (see sig) and I installed a Deijon MBC and a Defi Concept HUD. What I noticed is that I seem to be losing torque. Before the MBC, I would hit about 1.7 Bar (23.8 psi) but after install I was hitting a ceiling of 1.5 Bar (21 psi). Is this any significant difference? After getting home, I just dialed up the MBC until I was able to hit my 1.7 Bar again but somehow (maybe) I just don't get the torque I used to feel. Am I just imagining things?? 
BTW, the stock intake had to be removed and i got a code, later reset with a code reader.
I sincerely don't think the Xflash may have been affected. If so, how do I know? BTW, for those of you wondering, I had the MBC installed in advance of a later Exede upgrade.
I mention the Defi HUD concept since the tach readings are way off after install (it hits 8K RPM and sits there). I then realized my RPM needle accelerated slowly than what I had noticed before.
Any tidbits of expertise before I have to go back to the shop? Thanks in advance guys...
BTW, the stock intake had to be removed and i got a code, later reset with a code reader. I sincerely don't think the Xflash may have been affected. If so, how do I know? BTW, for those of you wondering, I had the MBC installed in advance of a later Exede upgrade.
I mention the Defi HUD concept since the tach readings are way off after install (it hits 8K RPM and sits there). I then realized my RPM needle accelerated slowly than what I had noticed before.
Any tidbits of expertise before I have to go back to the shop? Thanks in advance guys...
Ok you might be right from what Ive seen MBCs straightline to a pressure, they do this well but they also trim the torque curve like a butcher trimming the fat off a steak. The beauty of the Xede(Reflash also to a good extent) is that it has RPM dependant boost control, meaning that the tuner can control the boost curve independant of the other parameters. This offers more control. A tuner can also manipulate timing on a mbc car to get that torque. I guess it boils down to talking to shiv as I know he tunes for and expects certain mods to work together.
Originally Posted by David@Vishnu
Ok you might be right from what Ive seen MBCs straightline to a pressure, they do this well but they also trim the torque curve like a butcher trimming the fat off a steak. The beauty of the Xede(Reflash also to a good extent) is that it has RPM dependant boost control, meaning that the tuner can control the boost curve independant of the other parameters. This offers more control. A tuner can also manipulate timing on a mbc car to get that torque. I guess it boils down to talking to shiv as I know he tunes for and expects certain mods to work together.
