Hi

I have replaced my old Rochester carburetor with a home converted Edelbrock Victor Jr intake. The plenum is custom made and I use two Volvo 850T throttle bodies. I also use the BOSCH TPS from the Volvo TB:s..

I use MegaSquirt 2.2 and only adjust fuel so far. I'm about to flash the CPU to MSnS-Extra and start to use my stock HEI-distributor with the 7-pin HEI module.

This way I can get more control over the ignition curve now when it's time to reinstall the twin turbo headers... Soon to become a boosted MegaSquirt application.

I'm using a PLX-300 wideband lambda to tune the system and I got 0.9% CO at the sniffer test, the value I needed to pass was 4.5%..

/Anders

Good job. I'm still learning to tune my Megasquirt setup. I don't have the benefit of a wideband, though. Keep posting on whether you have success with the Extra code and the 7-pin HEI.

-Dave

Does anyone on the boards have experience with the Megasquirt setup that may also have experience with the other systems. I'm contemplating getting rid of my Accel 6.32 in favor of the Megasquirt system. I like the idea of it being Window's based and it's a lot cheaper to maintain and upgrade. But I want to make sure it's capable of managing my twin turbo 383.

Thanks for any suggestions.

the older Accel systems (before Gen7) kinda suck compared to the modern stuff... you'll like the megasquirt upgrade...


athough if you have the cash, the newer Accel setup is NICE.

Go over to www.msefi.com and look for a guy named 'dieselgeek'. From his posts I've read, he's used lots of other systems (including Accel) and he really like the Megasquirt.

-Dave

Yea........been to the site and have even printed out the entire manual for both the MS and MS II. I gotten dieselgeeks opinion. He said that he's installed it on a couple of other cars that were running different management systems..........and he commented that everyone has like the MS system better.

I'm pretty sure that I'll go with it.........I mean for the price.........it can't hurt to try.....

see my post in here:

https://www.thirdgen.org/techbb2/sho...hreadid=304254

Well let me ask you this Tibo.........maybe you can help.....no one else has seemed to be able to tell me yet.

I'm converting my small cap HEI setup to the MSD Crank Trigger, MSD Crank Trigger Distributor.......and the MSD 7AL-3 ignition system. Will I still be able to run the MSnS extra to manage the fuel and ignition?

That right there is the main factor that would keep me from using it. I like everything else about it that I've seen.......I'm not going to wait for the Ultra MS.......the more I read........it seems like the longer it'll be before it comes out.

If I'm not mistaken.......the UMS will be a completely different box right?

I've reprogrammed the MS with the MSnS-Extra code to prepare for HEI7 installation.
Next week I will receive the last parts for the forced induction side of the turbo-installation and after that I will start to tune the boost section of the fuel-map table.

As a bonus, this new code also contains rew-limiter, launch-control, over-boost-protection and boost-control parameters.
I'll need to add a magnetic-valve to handle the boost-control feature for the wastegate signal-line. I'll probably use one from a SAAB 9-5 or a Volvo 850.

I'll get back when I have some more news around these implementations on my car.

I really like MegaSquirt and the easy GUI for tuning, far superior to changing jets in the old carb. And offcourse it's fun to go through the logfiles after a run to see how things are working together.

I am sure you can, however I have no experience with the MSn'spark. that would be a question for the ms boards.

I've asked the same question there........and believe it or not........nobody can answer it.......or will answer it. It's like everyone is stuck on wanting me to run the EDIS ignition. I don't want to run the EDIS ignition. Besides.......when your pumping 1000 hp and 1200 tq........I wouldn't want to trust a factory style ignition.

Guess I'll just figure it out myself.........like you said, I'm sure it will work.........just figuring it out is the task........


I mean........from what I understand....the crank trigger is still a "Hall Sensor" setup.

Well.......thanks anyway's....... Ya'll have a good one.

In all fairness, Megasquirt is a DIY system and they make no bones about it. EDIS has a proven track record amongst the MS community and accomplishes the same thing your MSD setup does -- crank triggered ignition.

-Dave
(who just came inside after firing up the Chevelle on MS-II!)