Toyota VAST ignition and MS-II

Bernard Fife · Post by **Bernard Fife** » Thu Aug 17, 2006 4:56 pm

katok,

As far as I am aware, the toyota igniter used with the VAST system does not control the dwell, it relies on the ECU to do this.

Lance.

katok · Post by **katok** » Thu Aug 17, 2006 5:26 pm

Lance wrote:katok,

As far as I am aware, the toyota igniter used with the VAST system does not control the dwell, it relies on the ECU to do this.

Lance.

thanks for that information lance.

i'm about to set-up my MS2 to a 4age using JDM igniter.

ivanlau78 · Post by **ivanlau78** » Sat Aug 19, 2006 10:47 am

katok wrote:
Lance wrote:katok,

As far as I am aware, the toyota igniter used with the VAST system does not control the dwell, it relies on the ECU to do this.

Lance.

thanks for that information lance.

i'm about to set-up my MS2 to a 4age using JDM igniter.

any update on your 4age MS2 setup? can you let me know your 4age is 16v or 20v?

katok · Post by **katok** » Sun Aug 20, 2006 6:43 am

ivanlau78 wrote:
katok wrote:
Lance wrote:katok,

As far as I am aware, the toyota igniter used with the VAST system does not control the dwell, it relies on the ECU to do this.

Lance.

thanks for that information lance.

i'm about to set-up my MS2 to a 4age using JDM igniter.
any update on your 4age MS2 setup? can you let me know your 4age is 16v or 20v?

my engine is 16v engine (tvis)
i will start my project in a few weeks from now

ivanlau78 · Post by **ivanlau78** » Tue Sep 12, 2006 4:53 am

have you start your project?

ivanlau78 · Post by **ivanlau78** » Tue Sep 12, 2006 4:53 am

have you start your project?

Posted by email.

phydeaux · Post by **phydeaux** » Tue Sep 12, 2006 7:08 am

Are their any advantages to using vast over just driving the coil with the ms2?

Currently I have the NE signal going right in to the ms2's vr circuit and am driving the coil with the vb921. I still have all of the vast stuff sitting in a box somewhere and am at a point in the project where if I want to make a change like this its a good time to do it. I've started and run the engine for a little bit in its current configuration and didn't have any problems but the car's not road worthy so I haven't put any sort of load on it yet. The engine is a 4agze fitted with a 4age distributor that has a 4 tooth NE wheel.

andy

phydeaux · Post by **phydeaux** » Tue Sep 12, 2006 7:08 am

Are their any advantages to using vast over just driving the coil with the ms2? Currently I have the NE signal going right in to the ms2's vr circuit and am driving the coil with the vb921. I still have all of the vast stuff sitting in a box somewhere and am at a point in the project where if I want to make a change like this its a good time to do it. I've started and run the engine for a little bit in its current configuration and didn't have any problems but the car's not road worthy so I haven't put any sort of load on it yet. The engine is a 4agze fitted with a 4age distributor that has a 4 tooth NE wheel. andy
`88 Chevy Nova (ae82) 4A-GZE powered MSII v2.36 v3 mainboard ... mostly running...

Posted by email.

ivanlau78 · Post by **ivanlau78** » Sat Sep 16, 2006 12:13 pm

phydeaux wrote:Are their any advantages to using vast over just driving the coil with the ms2?

Currently I have the NE signal going right in to the ms2's vr circuit and am driving the coil with the vb921. I still have all of the vast stuff sitting in a box somewhere and am at a point in the project where if I want to make a change like this its a good time to do it. I've started and run the engine for a little bit in its current configuration and didn't have any problems but the car's not road worthy so I haven't put any sort of load on it yet. The engine is a 4agze fitted with a 4age distributor that has a 4 tooth NE wheel.

andy

can you post your MSQ file?
which version of ms2 you running? i have problem to take signal from 4 tooth. the signal not stable. 4age NE signal should be 24 tooth, 4 tooth is G1.
i'm trying to do fuel only, but still hard to make the engine idle. not sure what's wrong with injector setting.

phydeaux · Post by **phydeaux** » Sat Sep 16, 2006 3:16 pm

I don't really have a msq file right now. The engine has been started on a very loose setup just to test. It fired and idled after alot of tweaking the vr pots, it takes a while to turn those suckers down, and that was serveral months ago.

The pickup may very well be G1 I don't remember. The distributor came out of an early mk1 mr2, It had a 4 tooth and a single tooth wheel in it. I've yet to run the car for any lenght of time. It idled fine for me with the base settings and req fuel set to what ever the calculator spit out for the gze injectors. I'm in the middle of modifying the harness so I can't power it up and look at the settings. The copy of the msq on my harddrive was lost in a crash.