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Paul Workman · 05-04-2015

I found that I left the switch in FULL POWER all the time anyway (on my 90). And, as I said the REAL reason for it in the first place had to do with sound abatement - that "valet key" was a smoke screen that came out of the marketing department (specifically detailed in Young's book "HEART OF THE BEAST")

Of course, if you delete the Secondary Port Throttles* (SPT), then on a 90 it is recommended that you assure the switch is ALWAYS turned to FULL POWER mode or else one of the injectors will be cut off and resulting in a dangerously LEAN condition, should the switch not be in FULL POWER either by accidentally turning it off, OR if the switch itself becomes intermittent.

(For engine safety sake, I soldered a jumper wire across the switch so that intermittent connection would never happen. It's easy to install the jumper, and can easily be reversed if desired.)

* This is causing your thread to veer off the path, but just FYI for now, unless your car already has been modded for secondary delete. (That is doubtful, or you'd be having a lot of trouble getting it to run anywhere close to 5000 rpm on half the fuel - as the fueling is split between both injectors in FULL POWER mode.)

05-04-2015	#20
Paul Workman Join Date: Nov 2007 Location: Squires (near Ava MO in the Mark Twain N'tl Forest) - Missouri Posts: 6,466	Re: Full engine Power light I found that I left the switch in FULL POWER all the time anyway (on my 90). And, as I said the REAL reason for it in the first place had to do with sound abatement - that "valet key" was a smoke screen that came out of the marketing department (specifically detailed in Young's book *"HEART OF THE BEAST") Of course, if you delete the Secondary Port Throttles (SPT), then on a 90 it is recommended that you assure the switch is ALWAYS turned to FULL POWER mode or else one of the injectors will be cut off and resulting in a dangerously LEAN condition, should the switch not be in FULL POWER either by accidentally turning it off, OR if the switch itself becomes intermittent. (For engine safety sake, I soldered a jumper wire across the switch so that intermittent connection would never happen. It's easy to install the jumper, and can easily be reversed if desired.) * This is causing your thread to veer off the path, but just FYI for now, unless your car already has been modded for secondary delete. (That is doubtful, or you'd be having a lot of trouble getting it to run anywhere close to 5000 rpm on half the fuel - as the fueling is split between both injectors in FULL POWER mode.) Last edited by Paul Workman; 05-05-2015 at 12:46 PM.