Is there anyway to put something aftermarket on it or take of the afm?

 

Alright thanks im gonna go get one tommorrow ill, ill post how it runs afterward.

 

If im unable to find one couldnt I wire it into the afm like it should be. Do you know the wire colors and the order that they go into the afm on a turbo? maybe I could give that a shot first and see how it runs. and if there is no change i go get a new harness. mine has 2 black gn/yl brn/wht gn/blu brown and grn/orng

 

i gotta check on the harness before you buy anything. Because last time i checked the turbo ECU needs a turbo ECU harness. If i am wrong im wrong. But i need to double check

 

the engine harness is a turbo harness but the plug going into the afm isnt. the cut piece was never there, so I got the wire plugging into the afm off a non turbo at picknpull and wired it on, I was thinkiing to use the wire piece off a non turbo and wire it to the afm how it should be on a turbo. right now I think the way the wires are set up for a non turbo afm. Do you know the wire colors and the order they go in for a turbo afm? I believe if i wire it up how the turbo afm should be that it will run good. The map sensor wire was also cut too so im not sure if that is hooked up right either I got that plug going to the map sensor off the same non turbo 88 rx7 at picknpull. All the wires going to the variable resistor map sensor and afm were cut. Ive been trying to find out which wires plug in were? Im pretty sure that the non turbos have diffrent wire colors going to that stuff and probably shouldnt be wired like that for a non turbo

 

for my map sensor I have brn/wht, brwn, blck/wht and black going to it but the plug im using is off a non turbo has brn/wht brown black/white and black/red going to it but my engine harness does not have a black/red wire so i hooked up a brown wire in that spot. The variable resistor seemed to hook up good with brown/white black and green/blue. The airflow meter has all the wires matched up to the non turbo plug since its like that i have to run a non turbo afm. when i put the turbo afm the car runs like crap. so i dont think its the correct wire order for the turbo afm.

 

I hoping to figure out which order the wires go into the afm for a turbo im sure that will make a big diffrence in preformance. and hopefully it fixes all the problems. That would be great if you new the wire color order that plug into the afm. Then i could confirm if its wired right or make the corections to the wires. its an 1988 engine in it 7 prong plug

 

Theres now difference in wiring in the afm between na and turbo. All s4 electronics interchange. Look on the FSM to find the wire diagram. Once you know its wired back up right. Put on the turbo afm, boost sensor, injectors, etc. TPS is interchangeable. You can use na or turbo.

 

alright thanks im gonna check all electronics see if they are right. Do the turbos take an atmospheric pressure sensor, or would i not notice if i didnt have one? And what does the variable reisitor do, Ive been turning that screw in it and it doesnt seem to do anything.

 

And when I changed the engine from a na to a turbo I didnt change the fuel pump. Is there a diffrence in the fuel pumps?

 

The regulated pressure is the same but the turbo pump runs slightly higher output pressure.

 

Yes, there is a difference. And the Variable Resistor helps set the idle, and the procedure is listed in the service manual.

 

I just put a airflow/fuel ratio gauge on it figured that will give me a better idea and mostly its way to lean its hard to really tell because the gauge bounces all over. At 3500rpm its way to rich, when the engine cuts out at 4000rpm it drops as lean as it goes. Do you think I should put a new fuel pump, Marbe the na pump one cant keep up?

 

Can a plugged exhaust make it cut out at 4000 rpm?

 

Do they 88s take a solenoid resistor, maybe that why that one ijector isnt working right?

 

So I used the manual and tried to use the variable resisitor to set the idle and it seems to have no respons is. the variable resistor is a na. Do you need a turbo variable resistor?

 

Low impedance injectors require either the resistor box or inline resistors. High resistance injectors do not.

 

could it be so far off that i have to manualy ajust it on the throttle body and fine tune it with the variable resistor. When it idle cold its at 1500 rpm, when warm wont attempt to idle

 

Dude, holy crap. Your making this way to hard on yourself. You dont need the turbo pump for it to start and run. Just dont drive or boost. Now, it sounds like your secondarys are not coming on. Make sure your using a n318 boost sensor. The sensor with the vacuum nipple. And make sure your getting the correct amount of vacuum to it. Thats what operates the secondaries. You still need to make sure your hacked harness isnt messing with your afm. Again, i would just find a new harness, na or turbo. And try again. It would be way easier and less stressful. You can save alot of time and typing if you do what i mentioned above.

 

The secondarys are comming on good at about 3800 rpm one of them arent working right the other one is good. I bought a new n318 map sensor last week checked the vacuum acording to the manual and all that is working good. but when the car is warm it wont idle so im trying to get it to idle. It use to idle and for some reason it quit about a month ago. Tired of it dying evertime I stop.

 

I put the 88 turbo afm on this morning. It didnt effect the idle. And I did what the manuel siad to adjust the variable resistor but it made no diffrence

 

The engine will idle at around 1500 when cold until the engine slowly heats up and as it does the idle will drop slowly to close to 750. The Variable Resistor is to be set when the engine is fully warmed as is the TPS (Green/Red wire should measure 1 volt w/key to on and engine completely warmed up- requires a twenty minute drive to achieve full warm up). And the Initial Set Coupler requires it to be jumpered to set the Idle Adjust Screw on top of the engine and for adjusting the resistor as well.

 

I checked most of the electronics on the engine for the emission and they are all working good. I checked the wiring to the afm with someones turbo 88 rx7 today and it appears to be all wired properly so I dont think the afm wiring is messed up. Im running the stock high impediance injectors in it.

 

I would change the engine harness, but I cant find one for an 88 turbo anywere

 

So, you're seeing one of your secondary injectors always clicking. Correct?