16V Caddy Swap CIS-E to Megasquirt

[slavo]

Background: I own an 1981 VW Caddy I purchased last year. It was restored but not completed. I attempted to get it running on the stock CIS-E system last year but realized it was missing components and wasn't running right. After doing a bunch of reading, I decided to go with a Megasquirt system for fuel, and keep the knockbox setup for now for spark.

This is what I figure I need for it:
-Fuel Rail and FPR adapter
-FPR
-High Pressure Fuel Lines
-Injectors
-DigiII Injector Inserts
-Injector Harness
-Wideband O2 Sensor
-Cold Start Block Off
-Short RAM and cone filter
-Megasquirt 2v3
-DB37 Harness for Megasquirt

I read that some people were putting in a Automatic Passat Throttlebody for the TPS. Would it be possible to use the stock TB with a MAP sensor? or is it easier to switch out the TB

Am I missing anything else?

Any suggestions are appreciated!

Here is a picture of the mess under the hood, with the CIS-E and rad pulled out

[Jones84]

Yes you can use map only, but i would get a TB with a TPS. Its nice to have. There is a 8v TB that has a TPS on it as well. I think its a 91 or 92 digi gti IIRC. I have one and I think thats where i got it.
Or the Passat 16v auto one. I do know that they are getting hard to find.

[slavo]

Update:
While I was working on pulling other components from under the hood, I noticed that the car was rolling even thought it was in gear. So after some deliberation, I decided to yank the motor so I could fix a few things in the bay and figure out what the rolling issue.

After some tinkering with a friend, we realized the clutch isn't the correct type. So new clutch is ordered and is on its way.

I also ordered the majority of the parts listed. I got a MS v2.2 as the price was right and its included the harness and a few of the sensors. I was also able to get an Auto Passat Throttle body for a decent price!

As soon as the clutch is in, i'll be putting the motor back in along with the new MS setup.

Anyone have an suggestions about the type of FPR and Air Intake to get?

[psychobandito]

ITG Filter

[MEGA 16v GLI]

ITG Filter

K&N is over-rated. ITG'S triple foam construction can catch a lot more dust particles. Cleanings of the ITG filter will also put K&N's to shame because K&N's can not retain as much dust as ITG so the filter will not need to be cleaned as much as K&N. Cleans very easily and will last longer than K&N's Thin single layer.

[vwcrackerjack]

Sweet!! Keep us posted!! Have digi 2 on a 16v 2.0 so I'd love to see how u do this for future upgrades.


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[Frankenstein13fc]

i have a 86 cabby with a 16v 1.8 ..... what alternator do u have in urs? it looks lower then mine is ..

[Jones84]

i have a 86 cabby with a 16v 1.8 ..... what alternator do u have in urs? it looks lower then mine is ..

It looks like he is runing to MK3 Serp set up.

[vwcrackerjack]

What does the MS do? It completely replaces the stock ecu? Then you have to program it yourself or it's plug it in and your good?


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I am here: http://tapatalk.com/map.php?ovd0le

[MEGA 16v GLI]

[QUOTE=vwcrackerjack;77097468]What does the MS do? It completely replaces the stock ecu? Then you have to program it yourself or it's plug it in and your good?


Yes Mega-Squirt can completely replaces the Stock ECU depending on how you install the MS system. Some people keep the stock ignition distributor and leave 1 of the 2 stock ECU's (the one that controls timing) so they don't have to mess with timing/timing advance. By having the MS setup this way then the uses just has to worry about tuning the fuel.

MS can also do everything related to timing/timing advance

Tuning is done off of a Laptop using tuning software and Data log software.

[vwcrackerjack]

Very interesting stuff. Thank you.


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I am here: http://tapatalk.com/map.php?xafcrm

[-RalleyTuned-]

Just do the ms ignition right off the bat, it is much nicer to get things running better. Having ignition control is one of the key things moving to standalone offers, if you arent going to change the ignition then you should just keep the cis, it does a very good job of delivering fuel to a stock engien

[MEGA 16v GLI]

Just do the ms ignition right off the bat, it is much nicer to get things running better. Having ignition control is one of the key things moving to standalone offers, if you arent going to change the ignition then you should just keep the cis, it does a very good job of delivering fuel to a stock engien

Agreed. I would suggest upgrading from the stock Distributor to crank wheel/trigger and coilpack

[Road Boss]

Any progress on this?

[rey_reys84]

bump for update.... ?

[slavo]

I must apologize for the super long absence from the post. I have had an extremely busy summer. As mentioned earlier the clutch was replaced with the correct one. I also went ahead and fixed up some minor rust spots, primered the bay and repainted it with bedliner. Slapped everything back together, started to put in the new fuel management system in.

Here are some update pics from the motor pull to cleaning out the bay to re-inserting motor and starting with wiring.

Which I'm at right now.

[slavo]

Just do the ms ignition right off the bat, it is much nicer to get things running better. Having ignition control is one of the key things moving to standalone offers, if you arent going to change the ignition then you should just keep the cis, it does a very good job of delivering fuel to a stock engien

I was initially considering doing a the MS plus spark but in the interest of saving money I had decided against it. But after looking into it more deeply i'm considering moving to MS with ignition control.

What is the simplest and relatively cheapest options for v2.2 with ignition control? Also what additional stuff will I need?

[ps2375]

the easiest way to do ign control is to have a v3 board, other-wise you have to do some mods to the v2.2 board. If you aren't good at the mods, I'd send it out to be done, Paul at KPTuned .com is a good choice. There should be others who have posted in this thread that could be able to do the mods.

[slavo]

the easiest way to do ign control is to have a v3 board, other-wise you have to do some mods to the v2.2 board. If you aren't good at the mods, I'd send it out to be done, Paul at KPTuned .com is a good choice. There should be others who have posted in this thread that could be able to do the mods.

I already have a v2.2 PCB so I would just mod that one to do spark control. I have soldered quite a bit in the past so I feel comfortable enough to do it.

I cant seem to find a reliable resource on how to mod it though. I checked out GTIMan82's post on Megasquirt Ignition (http://forums.vwvortex.com/showthread.php?2545204) and it looks like OttawaG60 had documented the mods well but his posts seem to be down.

Anyone have a link as to where I can find how to mod the board for spark?

Thanks!

[ps2375]

Wait, these are for MS1:

http://www.msextra.com/doc/index.html#ms1

Sccroll down to "Spark Output Options for V2.2 PCB (green pcb):" and look for your option of choice.

MS2 with MSD amplifier is:http://www.msextra.com/doc/ms2extra/...tion.htm#1coil This looks very easy, you may have to look around for the setup if you use an ICM.

[slavo]

Wait, these are for MS1:

http://www.msextra.com/doc/index.html#ms1

Sccroll down to "Spark Output Options for V2.2 PCB (green pcb):" and look for your option of choice.

MS2 with MSD amplifier is:http://www.msextra.com/doc/ms2extra/...tion.htm#1coil This looks very easy, you may have to look around for the setup if you use an ICM.

Thanks for the info! I'm thinking of skipping the MSD ICM for now and try it with the stock ignition module.

MSextra site it says that the preferred method is Single Coil Direct Drive Output for a V2.2 PCB is this the best way to go with a single coil?

It also says to use a BIP373 transistor to replace a VB921 which I located at DYIauto (http://www.diyautotune.com/catalog/b...kit-p-230.html).

There seems to be an abundance of wiring diagrams out there, this one seems to be the the closest to what I'm trying to do. Im just not a 100% on how the ignition gets wired together with the MOD.

[ps2375]

The Patatron diagrams/wiring are slightly different than the "regular" outputs, I don't remember what it is, even though I am using a Patatron unit. Unless you have a Patatron unit, use the normal diagram for your wiring. I think it has to do with which pin the spark output is on, w/o looking I am not positive.