4AGE motor loses RPM signal at ~2200rpm (HEI4 issue?)

Post by **jsmcortina** » Sun Jun 25, 2006 5:40 am

elturbonitroso wrote:ok i did alredy the input mods now do i have to change my code type set up to hei 7 pin or everything stay the way its.

Leave it set to Dizzy(MSnS)
All HEI7 really adds is the bypass output.

James

elturbonitroso · Post by **elturbonitroso** » Sun Jun 25, 2006 6:04 am

ok im going to try to put my ms in the car today and see what happen.

elturbonitroso · Post by **elturbonitroso** » Mon Jun 26, 2006 12:18 pm

its a succes story now its time tofine tune the car thanks james and specialy thanks jeff the car seen to like the 7 pin.

Fastest95PGT · Post by **Fastest95PGT** » Mon Jun 26, 2006 12:20 pm

Great to hear about your success Angel!

Now it doesn't seem so strange when I got there and said "I didn't know you could use a 4 pin HEI to VR condition".

Post by **jsmcortina** » Mon Jun 26, 2006 3:42 pm

Phew!
Glad you got that sorted.

There were/are people using the 4pin with success but others have had the same issues as you.

James

elturbonitroso · Post by **elturbonitroso** » Mon Jun 26, 2006 7:50 pm

i drove the car and everything see ok just need more tunning but is a complete succes. uppi

Fastest95PGT · Post by **Fastest95PGT** » Mon Jun 26, 2006 8:32 pm

What would any of us do without you James? Would we actually have to use the search feature?? ;)

Thanks for helping Angel out. Sounds like it's running pretty well on the base MS default tune and we'll get it tuned up to some nice HP next time I go down there.

Gavin Lodewick · Post by **Gavin Lodewick** » Sat Jul 01, 2006 10:46 am

Hi jsmcortina
I have just read this post on the 7 pin VR triger.

My Q is if i run my wastspark on my V2.2 board, will this setup work
with 7 pin VR setup as explained in this post.

Regardes

Gavin

Gavin Lodewick · Post by **Gavin Lodewick** » Sat Jul 01, 2006 11:09 am

Hi James

Running 2 VB921 as wastspark on the V2.2 board,this was not stated in
the last post .

Gavin

Post by **jsmcortina** » Sun Jul 02, 2006 2:34 pm

I do not believe that anyone has tried to run the HEI7 with a multi-toothed wheel. They were not designed for that signal so it might not work. I use the LM1815 circuit on my car.

James

Gavin Lodewick · Post by **Gavin Lodewick** » Mon Jul 03, 2006 11:43 am

Thanks James

All I want it for, is a VR picup signel for the VR +& - senser.
I will set one up on my test center, and see how it responds over the
weekend or so.

Many Thanks

Gavin

Fastest95PGT · Post by **Fastest95PGT** » Mon Jul 03, 2006 2:16 pm

I think what James is referring to is the maximum tooth count a HEI can handle in a certain amount of time. The thread is talking about a 2 tooth trigger per revolution which is now being conditioned by a 7 pin HEI. However, to do a wasted spark setup, you'd need at least double the teeth (minus one or plus a cam angle sensor) to do it so that's 4 teeth per revolution of the motor and I'm not sure if the HEI can handle that at lets say 7k rpm.

James, am I correctly on this? Any chance you could find a link to a thread which discusses this? I've tried to search before to greaten my understanding on the subject of maxing out a HEI's resolution but haven't been able to find any which specifically discussed it (probably burried in a thread somewhere?).

cossie_storm · Post by **cossie_storm** » Sun Jul 23, 2006 4:21 am

Fastest95PGT:
I have the same problem. rpm drops, and suddenly get back on track again. But i'm not using vr sensor, but Tfi.
any ideas?

Fastest95PGT · Post by **Fastest95PGT** » Sun Jul 23, 2006 11:19 am

I'd suggest you start a new thread in this forum to discuss it. List your vehicle, motor, ignition trigger type, and any component between the ignition trigger and the MS.

From your sig it doesn't appear you have a 4AGE motor so it doesn't really apply to this thread.