Tuning fuel first later ignition or in one time?

arnold · Post by **arnold** » Thu May 11, 2006 3:30 am

Hi there

Not sure where to post this...

I have the MS1, V2.2 and I didn't change the code (.v19??), anyway I have my car running reasonable (supercharged) I use the wideband to fine tune.

1) I am curious wether is wise / clever to put more effort in this setup, as in the future I want EDIS ign and control as well. I think I'll use the extra code then, but should I first finish tuning or swap to extrta code asap?

2) Is the extra code indeed a good idea or is teh MS2 the way to go?

Arnold

renns · Post by **renns** » Thu May 11, 2006 3:38 am

Arnold,

If this is your first installation, and you have a good independent ignition system now, fuel-only would be the simplest route to go. Then, after tuning the fuel side to your satisfaction, add ignition control. I'd suggest installing msnsextra now, though, as you'll then be tuning 12x12 fuel table, and will have a chance to figure out the various fuel settings. You'll need to figure that stuff out when you switch to ignition control anyways.

If you have large injectors that result in short pulse widths at idle, MSII would be a significant improvement. Also if you have a stepper motor idle control system, then again MSII would be the obvious choice. If neither of these issues apply, I'd suggest sticking with MSI for the near term at least.

Roger.

arnold · Post by **arnold** » Thu May 11, 2006 6:35 am

Thanks,is this a risky operation? I mean installing the extra code? I am a bit afraid of falling back a long way, moreover because I haven been struggling for quiet some time to get things going.

I use a single injector in TBI unit

FoundSoul · Post by **FoundSoul** » Thu May 11, 2006 2:40 pm

The Extra code has ALOT more options than the standard MS-I code, but tuning it for fuel only isn't any more complex than the standard code really. You'll just have to get familiarized with the layout of MegaTune once you load the code as you'll see all of the extra menus that you won't need for now ;)

Go ahead and load up MSnS-E and take a look around with the ECU on stimulator and get familiar with it. If you decide you'd rather stick with the standard MS-I code you can always go back to it.

renns · Post by **renns** » Thu May 11, 2006 3:14 pm

arnold wrote:Thanks,is this a risky operation? I mean installing the extra code? I am a bit afraid of falling back a long way, moreover because I haven been struggling for quiet some time to get things going.

I use a single injector in TBI unit

Like Jerry says, it's pretty straightforward. Your 'risky' comments above, is that due to concerns about the re-flashing process, or concerns with the -extra code?

Roger.