With the dynotune lean shut down switch there is no need for a fpss.
I assume you have a wideband you are hooking to the dynotune lean shut down switch.
I disagree. They both do two very different jobs. The fuel pressure safety switch is designed to shut the system off in case of fuel delivery issues before the system goes lean. A lean cust off switch is designed to shut the system off after the system has already went lean. So technically if the fuel pump were to fail the fpss would catch it before the system ever had a chance to go lean.
Now the lean cut off will be more precise in monituring airfuel as long as it is wired to a real wideband sensor. If it is wired to a narrow band sensor (stock 02 sensor) I would not even waist my time putting it on the car.
Dave
__________________ If you want the highest quality, highest flowing products backed by the most knowledgable staff with full time tech service that answers the phones full time, responds to pms, emails and post on the boards with technical information our products and our company is the choice for you.
So...according to this, I should run the A/F Lean Switch between the WOT Switch (Blue) and the 86 Port on the Relay (Yellow).
This leads to the problem of where to put the FPSS...can it be put in between the Timing Tuner and the 85 Port on the Relay?
I would still ditch the fpss. If you are dead set on running it put it between the lean shut down switch and the relay for the solenoid. Like inline on the white wire. To me that would be the most logical.
I would still ditch the fpss. If you are dead set on running it put it between the lean shut down switch and the relay for the solenoid. Like inline on the white wire. To me that would be the most logical.
You're probably right, I have a Fuel Pressure gauge on my A-Pillar, so it's not like I'm not monitoring it anyway.
__________________ 2000 Black Trans Am WS6 M6 "Nymphadora" Performance: FTP 85mm Lid, FAST 90 Intake,
Holley 90 TB, CNC Ported 5.3L Heads, Torquer V.2,
LPP LTs, True Duals, Moser 9" w/ 4.10s, Full
Aftermarket Suspension, and SD Tuned. Currently Being Installed: 150 Wet Shot of Nitrous.
You're probably right, I have a Fuel Pressure gauge on my A-Pillar, so it's not like I'm not monitoring it anyway.
And if you have the lean shut down switch wired up to a wideband, then if you ever do loose fuel pressure and the system goes lean it will kill it fast.
I apologize for the delay in making this...I am not online every day...and do these in my spare time.
Thansk for you patience and understanding.
I did this one quickly so I apologize for the looks...I didn't have time to move stuff around to make it look better
No problem, it looks great and I can understand it.
One question though...would it be possible to switch the LSD and WOT in an attempt to save the wiring hassle of going from the activation button to the TB, back into the car to the LSD, and then back out of the car into the engine bay to the relay?
__________________ 2000 Black Trans Am WS6 M6 "Nymphadora" Performance: FTP 85mm Lid, FAST 90 Intake,
Holley 90 TB, CNC Ported 5.3L Heads, Torquer V.2,
LPP LTs, True Duals, Moser 9" w/ 4.10s, Full
Aftermarket Suspension, and SD Tuned. Currently Being Installed: 150 Wet Shot of Nitrous.
No no, I meant run the wiring like you have it but have it in this order:
Activation Button -> LSD -> WOT -> Relay
So you are going to put the red push button straight to the blue wire on the lsd, then put the wot switch inline with the yellow wire before the relay?
If so, you will be completing the circuit only when the system is armed, the button is pushed, the lsd is below the lean programmed afr, and the wot switch is activated.
How does this wiring setup look? 
