Rancid7

now let me see if i got this right ... remove the omp and block it off with a costum block off plate , then plug up the 4 holes in the manifold with 10mmx1.0 bolts with teflon tape so that its leak free , then plug up the vaccum lines that went to the original oil injetcion bolts ? can't you just leave the original oil injection bolts with the vaccum lines hooked up ? i dont see why it would cause a problem . i just need a little more input on the best way to do this and why . i couldnt gather enough info from the other threads . thanx a lot guys .

Rancid7

i have the electronic omp thats why im having a hard time . is there a write up or how to for the electronic omp block off ?

mazdaspeed7

You have a S5, so its complicated, and oyu need to do in in an exact way to have it work.

A word of warning. S5 engines with the electric OMP CANNOT just block the lines, unplug or anything else. There is a very specific way you must disable it. I spent a month figuring this out, and had one OMP lock up on me.

First, remove the drive gear from the eccentric shaft and/or all the internals from the OMP itself. Either one will accomplish the same goal, but the OMP casing MUST be left inplace AND plugged in. If not, your engine will go into "limp-home" mode every 7 min without fail. Believe me, I spent a month trying to fix this. The stepping motor MUST be functional, the actuator it pushes must move freely, and the sensor must be calibrated correctly(it comes calibrated, so as long as you dont mess with the shims, you will be fine). Both Plugs must stay plugged into the harness. Then you can block the lines off at the OMP with bolts. The thread size/pitch is listed earlier in this thread. You cannot just block the lines, or the OMP will lock up(ask me how I know). Once the pump itself is disabled by gutting it or removing the gear on the eccentric shaft, then you can block off the lines without worrying.

Ill get a few pics to show exactly what Im talking about. Ill have them up later tonight. It sounds harder than it really is, and you probably wont really understand it until you get your OMP off to look at it.

I did this on my 90 GTU, and got it to work prefectly, so I should be able to answer any questions you have.

Rancid7

do you think i should use the procedure your tellin me and have to pour in the 2 cycle at fill up , or should i get the adapter that utilizes the stock omp and injects 2 cycle instead of dino juice ? im leaning towards the adapter due to the simplicity . im askin you since you seem to know a lot .

mazdaspeed7

I would go for the adapter. It will save you tons of trouble. Its happened to me a few times, Ive been kinda low on gas, but I didnt bring any 2 stroke oil with me. Low fuel light comes on, and not a single gas station within 30 miles has 2 stroke oil. I would recommend taking your OMP apart, and making sure everythings really clean, and in good shape. Ive had 2 electric OMP's fail on me. And if yours has never been rebuild, you would at least want to check into its condition.

Rancid7

ok then thats what i'll do .
thanx