Search found 34 matches

by rbalmford
Sat Jan 12, 2008 6:10 pm
Forum: Installation
Topic: initial testing (didnt work!)
Replies: 17
Views: 9970

Each coilpack will energise the HT leads in pairs, with 40kV appearing at a pair of HT terminals simultaneously, but they are not dependant on each other to work. To check the spark: - remove all the plugs to ease cranking - have 3 HT leads going 'nowhere' i.e. no plug inserted in end of lead - in s...
by rbalmford
Fri Jan 11, 2008 1:42 pm
Forum: Q&A
Topic: MegaJolt and boost
Replies: 6
Views: 4837

Hi, See the Configuring Normally Aspirated or Forced Induction section from http://www.autosportlabs.net/MJLJ_V3_Operation_Guide , can measure up to 21 psi of boost with the standard MAP sensor specified. More boost = more heat => bigger intercooler to keep the charge temperature down and gain the a...
by rbalmford
Sun Dec 23, 2007 5:22 pm
Forum: Installation
Topic: On the scrounge!
Replies: 2
Views: 2159

I've got some spares as I bought a couple of PC connectors from Maplins - send me your address and I'll post them (at some point!).

Rich.
by rbalmford
Sat Nov 03, 2007 2:01 pm
Forum: Q&A
Topic: Workbench testing question ?
Replies: 4
Views: 4101

Hi, yes this is the expected behaviour. When rpm<457, it will always use the upper left cell, which allows you to set a 'cranking' advance value in this cell (6 degress in your case). When rpm>457, it will respond as expected to the MAP value. P.S. It also looks like you need to select 'MAP' (rather...
by rbalmford
Sun Oct 28, 2007 7:36 am
Forum: Operation
Topic: reverse vacuum load phenomenon
Replies: 34
Views: 17270

Sounds like the MAP sensor is reading vacuum correctly when you test it with the syringe. Is your vacuum take-off fully *downstream* of the throttle butterflies? i.e. inbetween the butterfly and the cylinder head. A reading of 100kPa at idle can be due to the takeoff being upstream of the butterfly ...
by rbalmford
Fri Oct 26, 2007 7:09 am
Forum: Operation
Topic: rpm accel data?
Replies: 6
Views: 4073

As its an *acceleration* I imagine its rpm/second figure, e.g. if your engine increases 78rpm in 1/4 second then accel = 78/0.25 = 312. Hopefully someone with firmware knowledge can confirm/correct. Oh and looking at some of my logs I've just noticed the timestamps do not always increse e.g. I have ...
by rbalmford
Sun Oct 14, 2007 1:51 pm
Forum: Operation
Topic: Timing marks don't align with a strobe light
Replies: 5
Views: 5453

Hi richard, a couple of things spring to mind: 1. Does your engine rotate clockwise? If so, the missing tooth will pass the VR sensor at 90 degrees (see 2) AFTER TDC (not before). This will make it approx 180 degrees out and may explain why you had to swap your ignition leads over (1&4 with 2&3). Co...
by rbalmford
Sun Oct 07, 2007 6:53 am
Forum: Operation
Topic: TPS Communication Timeout
Replies: 13
Views: 8483

Mik, Not 100% sure what you mean by 'top' and 'bottom' MJ connection, but sounds like it's not quite right. Going from your pic, the centre WHITE wire needs to go to the 'TPS INPUT' terminal, and the outer 2 wires YELLOW and BROWN should go to EARTH and the 'TPS VREF' pins, swapping just these two a...
by rbalmford
Wed Sep 26, 2007 8:50 pm
Forum: Installation
Topic: Measuring the vacuum? New VW Type1 installation& misfire
Replies: 17
Views: 11620

MartinM wrote:The axes are the correct way round - it's the advance bins that are "upside down"

I'm sure that what Rich means...
Indeed it is, I was referring to the columns of advance values, not the load axis itself.
by rbalmford
Wed Sep 26, 2007 3:58 pm
Forum: Installation
Topic: Measuring the vacuum? New VW Type1 installation& misfire
Replies: 17
Views: 11620

Hi, an initial scan reveals your map is effectively 'upside-down'!! The top row with the lowest pressure is for closed-throttle (low load) and the bottom row with the highest pressure is for open-throttle (high load). Conventionally, you can increase the advance at low load/part throttle, so the num...
by rbalmford
Wed Sep 19, 2007 2:26 pm
Forum: Assembly
Topic: Converting from MAP to TPS
Replies: 1
Views: 3325

Removing R4 should do the trick.

Richard.
by rbalmford
Wed Sep 19, 2007 9:54 am
Forum: General Discussion
Topic: Having to log in too often?
Replies: 8
Views: 6440

I've had this as well - Firefox under WinXP.
by rbalmford
Tue Sep 18, 2007 9:03 am
Forum: Operation
Topic: Bad stumble under load
Replies: 30
Views: 15432

Good news! There's nothing wrong with a simple solution. And in the process you've double-checked everything else.
by rbalmford
Thu Sep 13, 2007 9:57 am
Forum: Operation
Topic: Bad stumble under load
Replies: 30
Views: 15432

Construct a map with 10 degrees in *every* cell, and drive the car both with and without the MJ connected. In theory the timing should remain at 10 degrees in both cases - if there is a difference in the running, then the EDIS<->MJ communication is going awry somewhere. Have you tried this yet??? I...
by rbalmford
Wed Sep 12, 2007 4:57 pm
Forum: Operation
Topic: Bad stumble under load
Replies: 30
Views: 15432

Hmm.....a few further ideas: I'm concerned that you said it ran OK on EDIS only, but poorly with 8 degrees in the MJ map, which is very close to the EDIS-only 10 degrees. Construct a map with 10 degrees in *every* cell, and drive the car both with and without the MJ connected. In theory the timing s...