F1 pump relay solution

ChrisNico

Member
Messages
171
I fitted the basic version in my QP. Be aware that the handbook is incorrect. It’s relay R23, not R22. This mistake wasted several hours as the new relay would ‘sleep’, and the electric seats wouldn’t work shortly after starting the car.

~Chris

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BennyD

Sea Urchin Pate
Messages
14,994
Any idea which is the correct relay pin configuration for a MY2004 4200 spyder?
 

tonycharente

Member
Messages
182
Hello everyone,
My feedback. Today I did about fifteen kilometers with the Scud Ing system in place. Everything worked perfectly and (but?) I found no difference in driving the car compared to the original relay - which means that if the Scud Ing relay runs a micro-second faster I couldn't detect it. On the other hand (1) I now have a 200A electronic relay that should last forever and (2) I have the protection of the system that permanently controls what is happening with the F1 pump (even with the engine stopped). Two things that I find very reassuring ...
The only thing that would be better would be if the monitor module were visible inside the cabin, which would involve passing its cable from the boot/trunk to the inside of the car. Has anyone already done so? The cable supplied might be long enough to reach into the rear seats area - and they do now do extension cables so cable length would not be a problem. But how to feed the cable through? I therefore also wonder how to change a bulb in the third (central) brake light, in case it gives access to the wiring to the boot/trunk.
Tony

PS Regarding "Any idea which is the correct relay pin configuration for a MY2004 4200 spyder?" I think the safest thing would be to check the existing relay's pin configuration as I don't know when Maserati changed from the 30A 5 pin relays to the 50A 4 pin ones. Although I think the former are grey whilst the latter are black, I'd still check to be sure!
 

claymore

New Member
Messages
16
Hi all (first post),

Some further comments on the Scuding solid state relay replacement. Although I had already swapped in the compatible Alfa part (Relay 11130287, 4 pin) to my recently purchased 2006 CC, I recently opted to go for this 'peace of mind' solution. Everything I read suggested that this was a fail-safe solution to the risk of a burnt out relay and hence totalling the pump. The Scuding documentation makes a very good case (naturally!). I’ve put in the basic version without monitoring, but I figure that if problems develop with the pump or clutch mechanisms, then it will be off to the specialists in any case.

So far only a 12 mile test drive and like Tony, it was difficult to perceive any difference in speed or smoothness of changes. I've always felt a degree of clunkiness in low gear changes, 1 to 2 or vice versa. Can be mitigated a bit by slightly lifting the throttle at the moment of clutch engagement.

Fitting is easy, once you've wrestled with the removal of the boot linings. I've added a photo to show the positioning of the unit, with the original relay and fuse holder swivelled downwards for better access. If it ever gives problems, I'll still have the original relay as standby.
Alan

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tonycharente

Member
Messages
182
Hello Alan,
As I said previously, I managed to install mine without removing any trim except the battery access cover. Very interested to see your photo, though, as having the monitoring module I'm still keen to find an easy way to pass its cable through into the rear of the cabin so as to have the monitoring module mounted inside the car. Would it have been possible to access the rear of the cabin with the boot/trunk linings out, do you think?

Regarding no difference in the actual operation of the gear/clutch, I think that in reality there never would be a difference unless the old F1 relay had been faulty, since the F1 pump is only run from time to time to keep the pressure up. I only really reported on the absence of any difference because I had read on some Ferrari forum someone who felt the Scud Ing system had improved things, but unless the old F1 relay was not passing enough current I don't see how this could be the case.

Tony
 

BennyD

Sea Urchin Pate
Messages
14,994
I think the faster change blurb is over-egging the pud. It’s the peace of mind thing that I’m after, and a solid state relay has to be more reliable than a mechanical one.