I'm converting to efi with a HSR and megasquirt. Im considering using a corvette filter/regulator like this.
https://m.summitracing.com/parts/tnk-ls9904-kit?seid=srese1&cm_mmc=pla-google-_-shopping-_-srese1-_-tanks-inc&gclid=CNG5i8aPpc4CFQeRaQodVBkPfw
I've seen LS swap guys use them, but those engines used them from the factory. Is there any reason why I couldn't use this filter?

 

Read the reviews. There's good reason there not to use them.

 

Well I should have stated this in my post, this is in a v8 s10 that currently has a single 3/8th line ran to a carb. I would like to avoid having to route a return line. There is a fuel cell in the bed, and I am doing a in tank pump.

The only downside I have read other than ditching a stock return line is possibly voltage fluctuations. Which is a legitimate concern. This is a 400hp street truck. Nothing radical.

 

That filter/regulator combo has a return outlet. You need a return line.

-- Joe

 

My fuel cell has a return Inlet. My plan was to have the filter/reg close to the bed and run the return from it to the tank.

 

Well, it would work.. I'd prefer to run a regulator on the fuel rail, preferably with a 1:1 rise.

-- Joe

 

Bringing this back because I have a problem and don't want to start a new thread.

I purchased this filter,
https://m.summitracing.com/parts/CMB-03-0262
and this fuel pump
http://walbrofuelpumps.com/255lph-wa...fuel-pump.html

when I turn the key the pump primes like normal, but after a second or 2 of running it sprays fuel from the hole beside the pumps discharge. I assume it's a pressure relief valve or a bypass.

When the pump runs I can look into the tank and I do not see any fuel coming back through the return.

I want to say the regulator is bad, but any other opinions?

 

Problem solved, I had the inlet and return backwards. Works like a charm, solid 57psi. I now have to figure out how to make the megasquirt work.

 

What MS did you buy and how do you intend on wiring it?

Do you have a starter calibration?

-- Joe

 

I'm using a MS2 v3.57. For the ignition I'm using a 36-1 wheel with a Hall effect sensor and LS logic type coils in wasted spark mode. I modified the megasquirt for the resistor type method for the coils.

When the engine cranks I have RPMs, and everything else looks in order. I need to check the timing while cranking to make sure it's close I guess. I've only done simple distributor type installs using megasquirt so this is new to me.

 

That's a good setup. I almost did that (I have a 36-1 wheel too) with LS2 coils, but I'm using a Microsquirt and if I use all 4 ignition outputs I lose IAC.

-- Joe

 

I wish I could of gone that route, but MS2 only supports 6 outputs. I didn't want to loose the IAC either.

Are you pretty familuar with tuning a crank fired setup with megasquirt Joe? I've posted on msextra forums and gotten a lot of help, I have not really posted any megasquirt specific questions on here. It's always helpful to find someone who has completed what I attempting.

 

Yep, I played with it for a little while both direct and using an EDIS box.

By the way, you only need 4 ignition drivers to do 8 LS2 coils as you can do wasted spark with them. You just wire them in pairs.

I really like the Megasquirt.. For the last few weeks I've been chasing problems down on my C4, and I forgot just how crappy the stock delco stuff is.. And this is an LT1 car, so it's not even as crappy as the TPI stuff lol

It also scares me to death when I flash the ECM because if the laptop crashes, something resets, etc the ECM is a $200 paperweight.

-- Joe

 

I misunderstood, I thought you went full sequential with the microsquirt. On my system I have 4 spark outputs with 2 coils per cyl. I considered using EDIS, but I hate to add more components unless they are absolutely needed. Especially like you mentioned with the old delco stuff, using old factory components can cause a ton of gremlins that will drive you nuts.

I've done a couple megasquirt projects and the one thing I have learned is to keep it simple.

I just put together a TBI K2500 for a work truck. I researched re flashing it, but after I get all the stuff Needed to do it I could of throw a cheap megasquirt setup together.