Haltech install questions.

[jdbubb@ix.netcom.com (Dan Bubb)]

> Chris M wrote:
> 
> ok all, here's my story so far...
>   I'm in the middle of an EFI conversion that has taken 6 freakin'
> months and was supposed to be done in April.  Now it's July and I
> still haven't driven my car since last fall when I put it away.
> Here's what's left to do and the questions I have for ya'all....
> 
> oh, I'm using a Haltech F9a standalone system for efi, 16v stock 1.8
> motor..
> 
> 1. Throttle body TPS.  I've heard that I can use an auto passat TB and
> just throw my switches on there.  Do I really need the switches? Can I
> just go to a MSD 6a and dump the knock sensor setup?  I don't really
> want to do this right now, I like the idea of the knock sensor box
> taking care of timing for me and I've invested alot of time in making
> the knock box stand alone, but in for the sake of simplicity, I'll
> dump it in a heartbeat.

Not sure which switches you're refering to. The Haltech has to have a
tps to work properly. The KS ignition has to have the idle and full
throttle switches to work. The Passat TB has a setup with the complete
set of switches. Not sure if the Haltech will work with the Passat TPS,
but it's pretty tolerant, so I would bet it will. Since I'm using an E6K
I only need the TPS and ditched the clumsy expensive VW switches and
adapted the Haltech/GM TPS to the TB.

> 
> 2. Coolant sensor....anybody using haltech out there?  I need to know
> how you setup your temp sensor.  I cannot find a good way to plug in
> the haltech sensor, and I don't know if the stock vw sensors are
> compatible with the haltech.

I removed the VW temp sensor and drilled and tapped the coolant outlet
pipe for the Haltech sensor. Don't know if the VW sensor is compatible
or not. Personally, I found it easier to adapt and use the Haltech
sensors than to spend hours trying to round up mating connectors and
pins to adapt the Haltech.

> 
> 3. Oxygen sensor: I haven't even looked at this thing yet...I'm going
> to run open loop for simplicity's sake for now.  How do I use this
> thing for the A/F ratio?  Will the stock O2 sensor work with all these
> aftermarket AF gages or what?  Any recomendations for AF gages?
> 

The Haltech will use any kind of O2 sensor; 1, 3 or 4 wire or you can
hook up a wideband O2. If you're using a garden variety A/F gauge you
can splice off the signal wire of the existing O2. No recommendations on
A/F gauges since really all they show is whether you're rich or lean,
but not how rich or lean with any accuracy.
If you're electrically inclined check out www.diy-wb.org for an
affordable, ACCURATE A/F gauge.



> 4. Fuel maps...anybody got a good one for the Haltech for my motor or
> is everyone running SDS like a sane person would?

I can guarantee that the maps for my 2.0L 8V with 440cc injector engine
will have no relevance to the maps your engine will need. The default
maps will almost certainly get your engine started then it's just tuner
heaven. BTW, I resent the comment about SDS. The Haltech is miles better
than the SDS and the cost is only a couple hundred more when you
consider the entire cost of converting from CIS.
> 
> 
> Please help, guys....I'm desperate to get this damn thing running
> again and get on the road. I know my questions are a little vague, but
> I just got done fighting with the lawn mower and its 90 freakin'
> degrees out.....
> 
> Thanks a bunch...

If you have anymore questions I'd be glad to help. If you're located in
Maryland or close I might be persuaded into a little hands on.
HTH
Dan
> 
> Chris M.
> 82 8v Scirocco
> 88 16v Scirocco
> 70 MGB (wife's car)
> 76 Chevy Laguna
> http://www.geocities.com/vw16vmp3scirocco/
> pb1113@hotmail.com
> ctmetzger@hotmail.com
> 
> 
>