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MembersPage/GrmRacer (2010-09-07 11:33:10)

1.0.53 Currently running car

This is the configation we had when we left the track at the end of 2009. We just got the car to do a pass at 14.7 with a bad clutch. So the weekend was spent replacing the clutch. Also got the Knock sensor wiring in place. I need to get the correct pinouts. Nitrous wiring now also in place.

[2010_Config.txt]

[2010_tables.txt]

One major issue that we are having is after the ITBs developed an small air leak ( unmetered air after throttles ) we attempted to hold a constant RPM, but the PW for the injectors was going to zero intermittently. I am not sure what is causing that.

1.1.70 Newest version That ran the car

[1.1.70 vemscfg] for Alpha-N with TPS calibration. Car ran poorly, but did run

We use the stock Distributor (Hall Trigger) and the stock Bosch008 module (it is quite tough) for ignition. This also feeds the tach signal into the stock Tach without any problems when firing correctly.

This Configuration had the stock tach bouncing +/- 500RPM. and basically sounded terrible, but did in fact run.

[Idle] Blipping the throttle during warmup

[Long idle]

[idle] Closed throttles

[stuck throttle?]

[running config]

[another version]

Migration

Had the car running on 1.0.53 -- we had a few issues, so I figured I'd update to the current Release. The website indicates 1.1.81 is the current release.

I don't seem to be triggering on 1.1.81. So I'm downgrading to 1.1.78 (after I check the changes page).

Basic trigger setup is

simple Hall trigger (4 window on distributor total 720d) Could this be the problem.

I have time arranged for a dyno in the next two weeks. So it would be fabulous to have it running on the newer firmware.

Still have a few mechanical bits to do like change the Clutch back to a real clutch. the stock 8v one that is in it now doesn't do its job.

Update

Getting car ready a month in advance this time.

Getting New ITB manifold installed issues before were with major air leaks in the old ones..

I'll have updates this weekend as install happens.

BTW the new software looks fantastic!!!

Update

$2006 Challenge:

Were off and going. Running a 3.3 with Release 1.0.53

our msq file is

[Rushi's] old configs

Question regarding PulseWidthCalculation for full AlphaN.

The PulseWidth is calculated by the following equation \n

PW(ms) = req_fuel(ms) * load/100 * VE/100 * gammae/100

A little matlab snippet to figure out how the VE table entries correlated with time.

My value for the bin was 22-23\n

function output = VEtable(dummy)
%values taken from my log file
req_fuel = 12.5
rpm = 4621
rps = rpm./60
effrps = rps./2
effperiodms = 1./effrps.*1e3
gamma = .98
pw = 2.8
VEelementraw = pw./ ((req_fuel).*(gamma))
output = VEelementraw.*100
return

If the VEtable is configured (at WOT) well with what a dyno HP plot would look like, the VE table relates the of TPS% to air flow. For example if 1% throttle is 10% flow the VE table would reflect that.

I'll be posting some matlab code soon that takes RPM,HP, displacement, airtemp, and outputs various VE tables:

with some modifications we can also do the same for AirDensityControl maps as MAP is supposed to determine % throttle open with some non-linear effects already included.

Notes:

The config has full AlphaN

$2005 Challenge

Car not going this year. A multituide of last minute problems has conspired to prevent the two planned cars from attending.

Not really bad ignition switch, bad grounding of ignition module

Anyway plans are already underway for next year. And the cars/engines are partially built.

Physical Setups

VEMS needs/checklist

STICKERS !

STICKERS !!

Hardware

  • *Knock setup for using stock VW sensor for a 2.0L [PL] block

Software/ configuration

Assuming that all my needs are already implemented in firmware setups Please correct if not done..

Current firmware version you want me to run

Turbo VEMS v3.1

Naturally Asprirated car -- VEMS v3.2

For $2004 challenge

So we placed 29th overall in the $2004 challenge

our 1/4mi time was 14.6 after 1/2 hour of tuning on a turbo Yugo MEgasquirt fuel map, a bad coolant sensor, and no nitrous..

oh well.

Yes that PVC works.

GRMenginebay.jpg

Lots of pics and snippets..

http://BustedKnuckleRacing.com

GRM = Grassroots motorsports (www.grmotorsports.com)

Documentation and History

This is to document any changes or addons that are made to MS-AVR (GenBoard or AfreshBoard) during the building of the 1988 scirocco http://www.scirocco.org
Starting point BasicInstallation
The plans
2.0L ABA 16v Turbo

Triggered via the hall sender built into the block

nitrous injection
water injection
ignition control
traction control

Whats happening this year no time for turbo.

2.0L 9A

1.8L 16v head P&P

nitrous direct port injection

water injection via cold start in custom intake manifold

MS-AVR for ignition and fuel

<insert stuff for car setup>

MembersPage/GrmRacer/GrmCircuits

EGT's on the cheap using raw thermocouple and Dupont LTCC tape.

Stuff Im going to document

MembersPage/GrmRacer/HowToSwapIntoCIS
MembersPage/GrmRacer/GrmIgnition
MembersPage/GrmRacer/GrmWiring This one is hard to read, but pretty complete
MembersPage/GrmRacer/GrmCircuits This one is easier to read and follow, but not complete yet
MembersPage/GrmRacer/Grm2005RaceQuestions -- Need help here.
InputTrigger/MultitoothTriggerWheel -- Page describing how to implement this
NitrousController -- Page describing adding nitrous to control stuff
TractionControl -- Used specifically to cut off fuel and air to reduce HP output to stop the tires from spinning
GearSelect -- Circuit to show what gear you are in for an early A1 VW transmission with the big reverse gear connector and the upshift light
IgnitionVW -- information on adapting the stock VW ignition circuit to the MS-AVR system with minimal changes to the system. It should be a fully mappable ignition, by replacing the Typical Hall sender output from the Hall sender on the distributor to the Ignition controller. Ideas abound for a cheap and easy replacement.
WaterInjectionController - This page will describe adding water injection to the racecar.. Please dont try this at home you can seriously damage your car.

MembersPage/GrmRacer/GrmInjectorSetup -- what I have to do to get the car running..

Disclaimer: I'm trying all this stuff at once. None, some, or all of it may work to some degree or other. This STUFF is developed for off-road use, and the car only has to last about 5 drag runs and 2 autocrosses. So think about that before you do any of this.

to the stock ignition box from the distributor or

The 2.5 bar MAP sensor that you asked: MPX4250AP (MembersPage/MarcellGal) http://www.x-dsl.hu/genboard/

ArmProcessorSubsitution

Im working on the lpc2119 library for the possible ARM processor use. Take a look at the library and see if I got it right.

http://www.vems.hu/files/grmracer/LPC2119_arm.lbr

a possible source for connectors

http://www.fciconnect.com/markets/m_auto.asp

[Genboard pics]

Notes for assembly

GrmRacer/TestHarnessSetup