High resolution anyone? - SRT Forums

boost junkie · 07-29-2007, 08:17 AM

I figured there's enough guys running the NGC code to warrant porting the NGC mod to the high res version. This one uses hardware timers to control the injectors so it can achieve 0.001ms injector resolutoin. However, you lose the PWM capability so you either have to run high impedance injectors, resistors or the PWM board.

I haven't test it yet. Let me know if it works.

*EDIT* Updated to 10e version which fixes problems with 3 and 4 bar map sensors.

http://megasquirt.texasneons.org/hr_10e_ngc.zip

esteinmaier · 07-30-2007, 11:12 AM

Wait... I always screw myself up. Stock injectors are high impedance, correct?

You mean to tell me that with the low-res code, I can just plug in 1000cc low impedance injectors?

sour kraut · 07-30-2007, 11:38 AM

Quote: Originally Posted by esteinmaier

Wait... I always screw myself up. Stock injectors are high impedance, correct?

You mean to tell me that with the low-res code, I can just plug in 1000cc low impedance injectors?

It depends on the hardware version you have. 3.0, yes. 2.2, with the flyback board yes, without, not a good idea. You also have to make sure your settings are correct in the fuel area(cannot remember the name of the area or settings right now).

esteinmaier · 07-31-2007, 09:44 PM

Roflmao.. I'm a 3.0 board. I guess 1000cc injectors it is, seeing as I run e85.

boost junkie · 08-01-2007, 06:26 AM

Has anyone tried this code?

**guhfluh** · 08-01-2007, 01:43 PM

Sorry boost. If I can ever get a NGC longblock I'll help you out.

esteinmaier · 08-18-2007, 09:50 AM

One question, BJ. Is the correct feature set up in the MS2 firmware to allow me to use low impedance injectors without additional hardware? I'll give the high res a shot, if you want. I'll eventually go to the MS2 chip, provided I don't have have to either chop up the wiring one more time to make it work once I throw bigger injectors in.

boost junkie · 08-18-2007, 12:49 PM

The MS2 developers added support for the SRT crank trigger. However, nobody has tested it. Yes, MS2 does high res and low-Z injectors.

SpecJ · 08-18-2007, 02:21 PM

Quote: Originally Posted by boost junkie

The MS2 developers added support for the SRT crank trigger. However, nobody has tested it. Yes, MS2 does high res and low-Z injectors.

So, is this a different code than what your wrote for the MS1

**guhfluh** · 08-18-2007, 02:38 PM

I'm thinking about swapping in a NGC block. If I do, can I just swap in a MS2 chip, update the code and run a resistor pack for 1000cc low imp injectors and start tuning away? I have the v2.2 board.

boost junkie · 08-18-2007, 05:34 PM

Quote: Originally Posted by SpecJ

Quote: Originally Posted by boost junkie

The MS2 developers added support for the SRT crank trigger. However, nobody has tested it. Yes, MS2 does high res and low-Z injectors.

So, is this a different code than what your wrote for the MS1

MS2 is a totally different processor daughter card that replaces the MS1 processor.

Read up here: www.megasquirt.info and www.msextra.com

guhfluh: The MS2 can control low-Z injectors without a resitor pack.

**guhfluh** · 08-19-2007, 01:17 PM

Quote: Originally Posted by boost junkie

guhfluh: The MS2 can control low-Z injectors without a resitor pack.

Sorry I didn't specify, but I would be trying the hi-res code to control the 1000cc injectors.

What I'm understanding is:

lo-res MS2 with v2.2 board = lo Z is OK
hi-res MS2 with v2.2 board = lo Z needs resistor pack or flyback board

SpecJ · 08-19-2007, 01:48 PM

Quote: Originally Posted by boost junkie

Quote: Originally Posted by SpecJ

Quote: Originally Posted by boost junkie

The MS2 developers added support for the SRT crank trigger. However, nobody has tested it. Yes, MS2 does high res and low-Z injectors.

So, is this a different code than what your wrote for the MS1

MS2 is a totally different processor daughter card that replaces the MS1 processor.

Read up here: www.megasquirt.info and www.msextra.com

guhfluh: The MS2 can control low-Z injectors without a resitor pack.

I know what MS2 is, what I was trying to figure out is, even though there is new hardware, am I still going to be running your NGC code, or did they write code for the NGC specific to the MS2.