Strange MAF-CAL idea

[SUODRAXAH]

I was just wondering if this was possible. It seems like it should but I don't know how exactly how the hardware works so I would just like to know for sure.

When I first started tuning my psc1, as well as having the wide-band to tune with, I was using a car that was close to my truck (acceleration wise) to see how the changes were effecting my acceleration. It was an RSX-S. stock for stock, every time we would run he would pull a car on me by 120. So I tuned the afr to 12.5 and we ran again. We were dead even every time. Then after a week or so, I decided to go leaner. AFR to 13.0. Instead, this time I ran a new Si with intake, full exhaust, and a reflash. The Si pulls about 2 cars on the RSX. When I raced the Si it was totally dead even all the way. Now this was great. I left the afr at 13.0 for about 3 weeks and then because I was too lean, one of my cats went. So I went back to 12.5. Now my question is, can I tune to 13.0, and place a switch in the power line that goes to the PSC1. That way I can turn off the psc when I'm just driving around, but flip the switch when I want more power. This way, the AFR will only be at 13.0 when I decide I need a little more juice and therefore placing less stress on the motor compared to if I left it at 13.0 all the time.

CLIFF NOTES: I want to put a switch in the power line to the mafcal to turn it on and off when I want more power.

 

[Gadget]

If you cut the power to the MAF Calibrator it will not process the MAF sensor signal and pass it through the box to the ECU. That would not be a good idea.

In the dyno testing we have done, 13.0:1 does make more power then the 12.0:1 AFR that we recommend tuning to when normally aspirated. However; the difference in power is only a few HP and I do not feel it is worth the very high combustion temps that occur at the leaner mixture.

If you remove all the cats and then it may not be such a concern.

If you do want a switchable calibration device that will allow you to run one map for normal driving and then a more aggressive one for special occations by flipping a switch, we can set you up with that. That is a feature of the MAP-ECU2. If you want to go that route, let me know and I will get one right out to you.

Gadget