Efi computer help !!!

[GUMP]

Originally Posted by J.R. Haddad

We have a 1990 Camaro 350 TPI Stocker, I/SA. We are upgrading our computer, etc. from an Accel Gen. 7 unit to a Holley unit. Is the Holley
550-601 the unit we should buy. Thanks, J.R. Haddad.

The Holley is by far the best system I have ever worked with. It is very user friendly and comes with excellent customer support.

[Joe Schweigert]

**

[Ed Wright]

I have worked with the new Holley system in a couple of COPO cars. I much prefer FAST.

[J.R. Haddad]

Ed, as you know from our previous conversations, I have a very high
regard of your opinion. What do you prefer about the FAST system?
Thanks, J.R.

[Ed Wright]

Unless something changed since I helped Patterson and a couple other guys with their COPOs, I could not set the VE table break points. I can set my FAST rows & collumns to what I want. I have mine set to the MAP values I see mine running at, at the different elevations/Baro numbers I see mine running on the track, at the tracks around here. I use Speed Density, not Alpha N. Like, at Great Bend,KS (higher elevation) it runs on a row in the VE table (aka "fuel map") it never uses anywhere else. Don't have to change "tunes" for different tracks. I use an IAT sensor, and that correction table to correct for hot or cold days at the same Baro/manifold vacuum. Last Holley car I worked with had set values for fuel & spark table rows.

I also use different spark advance/timing in each gear. Never looked into how to do that with Holley. May be possible, I didn't think enough of that system to look into it.

Only upside I see, is it appears to support the LS coil on plug ignition system with no added control box. Single ignition coil, I would use FAST.

[J.R. Haddad]

Ed, which FAST unit would you buy?
Thanks, J.R.

[Sean Cour]

Big Stuff 3

[Ed Wright]

Originally Posted by J.R. Haddad

Ed, which FAST unit would you buy?
Thanks, J.R.

XFI

Used BS3, not crazy about it.

[west coast]

Ed in the quote below you are using a different spark advance for each gear with a FAST system? You can do that.This must be an advance maneuver i don't know about yet, I am still learning a lot on my FAST system. How do you do that? Will have to call David. I meant to ask this question months ago when i first read it.

Originally Posted by Ed Wright

Unless something changed since I helped Patterson and a couple other guys with their COPOs, I could not set the VE table break points. I can set my FAST rows & collumns to what I want. I have mine set to the MAP values I see mine running at, at the different elevations/Baro numbers I see mine running on the track, at the tracks around here. I use Speed Density, not Alpha N. Like, at Great Bend,KS (higher elevation) it runs on a row in the VE table (aka "fuel map") it never uses anywhere else. Don't have to change "tunes" for different tracks. I use an IAT sensor, and that correction table to correct for hot or cold days at the same Baro/manifold vacuum. Last Holley car I worked with had set values for fuel & spark table rows.

I also use different spark advance/timing in each gear. Never looked into how to do that with Holley. May be possible, I didn't think enough of that system to look into it.

Only upside I see, is it appears to support the LS coil on plug ignition system with no added control box. Single ignition coil, I would use FAST.