360/430: DIY: F1 Pump Relay – Finally, a better designed relay
A known issue for both 360 and F430 is the F1 pump relay. These are mechanical relays and when they go bad they can keep the F1 transmission pump running endlessly and will eventually overheat & damage the F1 hydraulic pump. The metal contacts inside the relay also create sparks during electrical connection engagement thus it shortens its life. F1 pump / hydraulic system failure is a very costly repair.
Some have upgraded to better made (BMW) relays & higher current rating 30A to 50A but in my opinion, a solid state relay with no mechanical moving parts is a better option. But not one was available out there, until now.
I’m a big fan of Stef and his great products. When I heard he is developing a replacement F1 pump relay I volunteered to test his product on my 2006 F430 Spider F1.
I read Stef developed a smart F1 transmission ECU relay that is completely plug and play, microprocessor based ECU & firmware controlled with no relay coil, no internal switch contacts or any internal mechanical moving parts so it can instantly switch connection. Plus, it can handle current up to 200A! (F1 mechanical relays are 30A and some are 50A)
In exchange for an honest review, Stef has provided me a Pre-Production sample to test on my 2006 F430 Spider with F1 transmission.
Here’s my review:
It’s completely plug & play. Took me 10 minutes to remove & replace mine. Very easy.
I didn’t have to change any of the default settings. I just plugged it in, attached the ground wire and went for a drive to test it out. (Just follow the instructions provided as they are spot on.) No need to change any of factory settings.
Immediately the gear shifts are much improved. Shifts are much smoother during low RPM city driving. Crisp shifts during hard acceleration / high RPM. Amazing.
Automatic downshifts during deceleration is also much smoother. My car used to lag & chuckle as I slow down to stop lights. This is no longer an issue.
Best part of all – again, there is no mechanical relay parts that can go bad and damage the F1 hydraulic system. No sparks, no contacts heating or wearing out, no transients or delays.
Highly recommended. Now I have peace of mind knowing that my hydraulic system is energized & protected by this smart eMT relay ECU. This smart eMT ECU now controls the F1 pump so I wont have to worry about a fried relay or burnt F1 pump. And it's very affordable at $260.00. A very small price to pay for peace of mind in my opinion.
Thank you Stef for designing & manufacturing great products for our pride & joy.
Hope that helps some of you. Sorry for the lengthy post.
I have no business affiliation with Stef Scud Ing Swiss.
I am just sharing information and my experience with this product.