COBHC member

Modifications

admin — Sat, 12 Sep 2009 12:10:17 +0000

Big J&R cold air filter
2.5″ intake
Greddy BOV
Custom FMIC
T28 turbo
3″ exhaust

Magnecor SP wires
NGK BPR7ES spark plugs
650 cc/m FIC injectors
Walbro 255lph rewired straight from battery

Tokico shocks
Lowering springs
Short shifter
2-way alarm
Shaved Door Handls & Door Poppers
CCFL angeleyes headlights, black. Xenon.
Carbon style clear taillights
Custom bodykit
Custom paintjob
Goodyear F1 asymmetrical tires

Gauges/computer stuff:
APEXi AVC-r boost controller
APEXi SAFC-2 fuel computer
Digital wideband meter.
LC-1 wideband controler.
Evoscan logger
Touchscreen customized ASUS EEEPC 900
Fuel pressure, boost pressure, exhaust temperature gauges.

Audio:
Blaupunkt GTA 480 (2x210w RMS)
FLI 15″ subwoofer

Shootout

admin — Fri, 03 Jul 2009 06:59:18 +0000

Check out the wheels man!

Next picture will be with vinyl design that’s waiting to be applied

Snowboardn’ trip.

admin — Wed, 27 May 2009 17:17:22 +0000

Glass fiber LCD screen holder for center console

admin — Tue, 26 May 2009 20:03:51 +0000

Wooden plate holds the cloth in place until hardening.

Almost sanded.

Fake leather applied

Almost finished.

ASUS EEEPC 12V car charger

admin — Tue, 26 May 2009 15:05:25 +0000

I decided to build EFFICIENT power supply for my EEEPC 900. The laptop takes about 60mA of current while powered down and about 70mA while in suspend mode. I must mention that i removed the battery from the laptop to avoid it being charged from car battery and drain it empty.

Car battery has voltage of 10 to 14 volts probably and the laptop uses 12V input voltage. Normal switchers use transformer to generate this sort of voltage. Transformers are not efficient though and i don’t want to drain the car battery to generate heat.

So I came up with this device from National Semiconductor. LM5118. With my USB TV and active antenna connected, laptop took less than 2 Amps at 12V … P = U*I = 12*2 = 24Watt

lm5118

Asus EEEPC 900 for my car

MIDI controller for program change

admin — Mon, 25 May 2009 19:30:02 +0000

This is what i am working on.. The device that enables you to change your effect processor’s patch remotely – from a button push on your guitar’s neck or something…

Ok.. at the moment I can say that the damn device is changing the patches from ‘MIDI in’. I will update this post when i make it work over the wireless.

The controller connected to Rocktron VooDu Valve MIDI in port.

Fuel pump replacing and rewiring

admin — Mon, 25 May 2009 19:04:57 +0000

Taking apart: Link

This is what fuel tank looks from above. Be gentle when unscrewing the fuel line. I had to unscrew the other side of the rubber hose.

Shifter adjusting, replacing …

admin — Mon, 25 May 2009 19:00:22 +0000

Shifter cables adjustment instructions: Link

Glow gauges and dash bezel install

admin — Mon, 25 May 2009 18:57:18 +0000

Both of them came from ebay suppliers as usual. Actually i haven’t bought anything but the rims and a new bumper from Estonia

Dash taken apart. Dash bezel just sits on with 2-sided tape.

Glow gauges go on WITHOUT REMOVING THE NEEDLES!!

Finished

Apexi SAFC II fix.

admin — Mon, 25 May 2009 18:09:32 +0000

I bought used Apexi SAFC II on ebay.

MAF ECU and SAFC

On stock car there’s a Mass Airflow Sensor (along with temperature sensor) that outputs pulse output that goes directly into the ECU. Faster pulses mean that more air goes into the intake piping. Slow pulses that little air goes in. So ECU knows at any time how much air goes in and how much it should inject though the injectors (at stock configuration) to make 14.7:1 air/fuel mixture. N0w, when you install bigger injectors OR raise fuel pressure at fuel rail, you mess up things. More fuel gets injected. You need SAFC or similar to step in. You need to fool the ECU

Cut the signal line between MAF and ECU. Put fuel computer in between that changes the pulse rate. Most cases you need to slow down the pulses to fool ECU thinking it receives less air so it injects fuel for shorter period of time.

OK, now to my problem. I think the SAFC II was sent to me broken. I connected the device to the car’s ECU and tried to start the engine. All i got was backfiring like hell. SAFC was registering Mass Airflow Sensor signal “Kar”. I hooked up my laptop to the ECU with OpenPort 1.3U cable and Evoscan software. I noticed that the ECU registered no air coming in. When i removed the SAFC temporarily, it registered air coming in – ie Mass Airflow Sensor signal was being received.

So i was sure that the SAFC wasn’t outputting anything useful. I took it to my workplace and hooked its input to frequency generator with 50Hz square wave. Output to oscilloscope and got this:

Here is link to SAFC II configuring instructions: Link

SAFC Karman sensor output.

Output transistor Q4 needed to be replaced.

Schematics .. kind of