Solid state DME Relay conversion ?

[mepstein]

I picked up mine from eBay.

[uwanna]

A pelican named Ftech9 is the man who developed these solid state
DME relays. Perhaps send him a PM asking about future availability.
By the way, he hasn't posted since March of 2016.
Here's his original post from when he was developing them. Just did a search on Ebay and found none.
http://forums.pelicanparts.com/porsche-964-993-technical-forum/873271-solid-state-dme-relay-beta-testers-wanted.html

[mxtx]

very interested in solid state, and reading through all of this debate to pump-prime or not.

do we know how it works, or doesn't work, with an SW chip installed?

my assumption is the SW chip was designed with a stock non-pump-primed system in mind and to introduce more info to the system could be confusing but i really don't have any real knowledge on this. any experience is appreciated, thanks.

[Lyle O]

I have had the solid state relay with pump-prime for several years (including when I had a Steve Wong chip), and it works flawlessly. I love this relay.

[Koizumi]

I went for the fuel-priming version as well. I also have a Steve Wong chip.

I do keep a working spare DME relay and 2 red relays in my glovebox.

Works wonderfully. I highly recommend the fuel priming version. As previously stated, hearing the pump whirrr before ignition is a crucial troubleshooting issue that can easily be checked off of a no-start diagnosis.

[uwanna]

I also have had the SS pump prime relay installed for several years with an after market chip and it works flawlessly. I assume the 3 second prime function is built into the DME relay using a time delay circuit and has nothing at all to do with the ECU or chip.
Get one they are great, and you can forget any DME relay worries!

[wrxnofx]

I got the pump priming version of this relay about 2 months ago. It seemed like initially the crank time on my '87 was WAY shorter. Now, not the case anymore.

I have also had 3 separate occurrences where the engine dieseled after shutting off the car. Maybe 1 or 2 seconds each time. I never had this problem before installing this relay. Anyone else?

I reached out to the guy but got crickets, so I thought I'd ask here if anyone else has had this problem.

[Missed Approach]

Originally Posted by wrxnofx

I got the pump priming version of this relay about 2 months ago. It seemed like initially the crank time on my '87 was WAY shorter. Now, not the case anymore.

I have also had 3 separate occurrences where the engine dieseled after shutting off the car. Maybe 1 or 2 seconds each time. I never had this problem before installing this relay. Anyone else?

I reached out to the guy but got crickets, so I thought I'd ask here if anyone else has had this problem.

Hi @wrxnofx- I think we both installed ours at the same time- no issues yet. That dieseling is quite odd. I do have a spare DME (OEM) if you want to swap it and check!

[Ralph3.]

I have the non priming version on mine and have been happy with it. Installed mid 2017, no issues.

[Ralph3.]

Sorry I have a 964

[Ctopher]

I’ve had the priming version on my car for about a year this August. I have not had any issues with the car but the dieseling is something I’ve noticed from time to time both before and after the solid state DME. In all cases that I remember I slowly turned the key to turn off the car, almost as if power was pulled and added back. Since I realized that I’ve done a quick turn off of the car and have not had another occurrence. Not sure if others have noticed that turning the key slowly causes this.


CTopher

[GH85Carrera]

The web site for his solid state DME is Focus 9 Technology, LLC

I bought the 2 second prime version, and have had it for two years and over 11,000 miles with flawless operation.

[uwanna]

I have used the prime version of the Solid State DME relay for three plus years on my 964 transplant motor with not a single problem. Still keep a spare original DME relay in the glovebox just because. The SS DME has been one of the best buys ever for my 911.

[ClickClickBoom]

Originally Posted by wrxnofx

I got the pump priming version of this relay about 2 months ago. It seemed like initially the crank time on my '87 was WAY shorter. Now, not the case anymore.

I have also had 3 separate occurrences where the engine dieseled after shutting off the car. Maybe 1 or 2 seconds each time. I never had this problem before installing this relay. Anyone else?

I reached out to the guy but got crickets, so I thought I'd ask here if anyone else has had this problem.

Anecdotal, fuel pressure is fuel pressure, the fuel injected into the engine is through the injectors. The fuel pump is either on or off.

[evilfij]

Non-prime on a 993 here. Two years, no issues, stock one is still in the car as a spare.

[Roswell]

Is there a current preferred source for a SS DME?

[Canada Kev]

Originally Posted by Roswell

Is there a current preferred source for a SS DME?

Focus 9 Technology, LLC

He has them in stock currently.

[wrxnofx]

Originally Posted by ClickClickBoom

Anecdotal, fuel pressure is fuel pressure, the fuel injected into the engine is through the injectors. The fuel pump is either on or off.

And yet my engine's behavior has returned to normal having swapped back in the original relay.

[ClickClickBoom]

Originally Posted by wrxnofx

And yet my engine's behavior has returned to normal having swapped back in the original relay.

The fuel injectors are either on or off. The relay only controls the electricity powering the pump. Your after running is coming from some where else.

[phelix]

Can anyone explain why the prime and non-prime versions of the relays appear to have different pin orientations with respect to the mounting tab? I have emailed Joe but had a confusing reply.

This photo is from their website.