SSAFC Help

[sean22306]

I installed my ssafc & 440's last weekend and it ran like a dream. When I started it up saturday night to go home it ran like s*** and hasn't ran right since. The car seemed like it was surging. I could give it steady constant throttle and the car would feel like it was bogging, then it would accelerate, then bog etc.. I tried all 3 of the 440 maps. It seemed to do this really bad from -15 to 5-7psi range. Getting on it hard 10-15psi had no issues. Reset the ecu reloaded maps then it sounded like a lawn mower. It was misfiring really bad.

Swapped back to stock injectors, loaded the supermap and reset the ecu again. Car runs a lot better, still surges but not all the time or quite as bad as it did with the 440's. When I sit at idle it seems to be ok then a few seconds it will kinda stumble, then vac shows like there is a leak. Slowly moves up to 0 and kinda shakes then goes back to idling normal. Sometimes it will even stall. I checked the connections, doesn't seem to have a vac leak.

I've read that hooking the ground up to the ecu isn't the best and to ground it to the actual car. Do you think this would help any? Maybe the ground isnt the best. I replaced my spark plugs and o2 sensor in the mani since it was pulling 2 codes (P0131 Front HO2S (stuck low) ON 2 CCM & P0134 Front HO2S circuit no activity detected ON 2 CCM) Now I have another o2 code (P0032 Front HO2S heater circuit high input ON 2 O2 sensor heater)

Would the ground and o2 issue be causing this? How can I check that the 440's are working properly? I'm just at a loss on what to do.. This all came about after installing the ssafc (brand new unit from ken.) Any insight would be great, I just want to run the 440's and high boost again

sorry for the long and probably confusing post..

 

[magnumP5]

I have my SS AFC hooked up like the instructions say and I've not had any issues since installing it back in Oct. '07. If you're certain you don't have a vacuum leak it could be a fuel issue. What your car is doing sounds awefully similar to what mine would do when I had a screwed up injector o-ring. They're very easy to screw up - especially when removing/installing injectors. Gives those a check and see what's up.

 

[ogsp5]

E mail jamesk your map and have him take a look at it. You need to do some data logging and make some adjustments to your tune. The SS afc is very good unit to have but sometimes it can be PITA.

 

[sean22306]

Check the ring on top of the injector or the little insulator that goes on the bottom? I just don't understand why both sets of injectors are having the issue. Could the hose possibly be getting pinched where its coming through the firewall? (the rubber boot where the ecu wire come thru)

 

[sean22306]

E mail jamesk your map and have him take a look at it. You need to do some data logging and make some adjustments to your tune. The SS afc is very good unit to have but sometimes it can be PITA.

I'm just tried running the maps from the library on here. Didn't make any changes to them. I don't have a wideband so it really hinders the tuning at the moment.

 

[ogsp5]

You really need that WB to check your AFR's. Have jamesk look at your map and he can make adjustments to what mod's you got on your car.

 

[sean22306]

I know I need one, thats why I was just running the pretuned maps for the time being. Every single map did it, so I don't really think its a tuning issue. I dunno..

 

[magnumP5]

Check the ring on top of the injector or the little insulator that goes on the bottom? I just don't understand why both sets of injectors are having the issue. Could the hose possibly be getting pinched where its coming through the firewall? (the rubber boot where the ecu wire come thru)

Did you re-use the same parts, or are they different on each set. IIRC, I sold you the 440's some time ago right? If you're using the o-rings that are on those I wouldn't trust them. They were there when I bought them so they probably need replacing. I don't care what everyone else is saying, but it seems unlikely this is a MAP or even an AFC issue. The bogging, maybe, but the studdering at idle is almost certainly a leak or a fuel issue.

EDIT: and do not trust ANYONE to make a map for your car unless they are there with you. Sending maps over the internet to have them tuned is bulls***. All car response to mods and maps differently so there is no one perfect formula for a perfect map. Just get a WB, and do some road (or dyno) tuning yourself and you will have the perfect map.

 

[ogsp5]

Remember that every car runs different even with the same map. I have been trying for weeks to get mine the way I want my car to run. He sent me a map and I had to make some changes to it.

 

[sean22306]

Did you re-use the same parts, or are they different on each set. IIRC, I sold you the 440's some time ago right? If you're using the o-rings that are on those I wouldn't trust them. They were there when I bought them so they probably need replacing. I don't care what everyone else is saying, but it seems unlikely this is a MAP or even an AFC issue. The bogging, maybe, but the studdering at idle is almost certainly a leak or a fuel issue.

EDIT: and do not trust ANYONE to make a map for your car unless they are there with you. Sending maps over the internet to have them tuned is bulls***. All car response to mods and maps differently so there is no one perfect formula for a perfect map. Just get a WB, and do some road (or dyno) tuning yourself and you will have the perfect map.

So do you think that if I replace the rings on everything and throw the 440's back in it will solve the bucking/surging issue? I think oring kits are like $5 a cyl.. I'll have to try that.

Anything about the ground? Some people said to connect it to the ecu cover bolts.

 

[magnumP5]

So do you think that if I replace the rings on everything and throw the 440's back in it will solve the bucking/surging issue? I think oring kits are like $5 a cyl.. I'll have to try that.

Anything about the ground? Some people said to connect it to the ecu cover bolts.

It's possible. My issue was actually with my Perrin fuel rail (leaked a little, plus I installed it wrong) but I noticed that two of my o-rings were broken/torn (the ones at the bottom). I ended up replacing everything, but I forget how much it cost. At the very least give everything a look-over. It only takes like 5 minutes. As for the ground I have no idea. I use the ECU ground and I've not had any issue.

 

[Captain KRM P5]

you cannot use off the shelf orings for the injectors to head. these are thick plastic rings with rubber grips inset which can only be had from mazda.

 

[sean22306]

I bought a kit from a local parts store that had them in it. They were same thickness, hard plastic with rubber ridged grip insert. Looked exactly like the oem counterpart.. why wouldn't it work?

 

[sean22306]

Here are 2 areas from a spot I recorded last week showing how it spiked switching back and forth. Is it normal? I'm not sure what it means jumping from 2.2 to 2.5.

 

[Captain KRM P5]

I bought a kit from a local parts store that had them in it. They were same thickness, hard plastic with rubber ridged grip insert. Looked exactly like the oem counterpart.. why wouldn't it work?

i was thinking of something else entirely then, my bad. i've never seen these in a parts store just generic donuts

 

[sean22306]

The box came with 4 pieces. Its called "fuel injectors component kit" it came with 4 pieces. The top o ring, the thicker one thats recessed in the middle on top of the injector and below the o ring and the bottom insulator with the ribbed rubber insert, plus another one that looks like the insulator but its one piece and smooth.

I'll snap pictures when I buy more kits to replace all the injectors.

 

[sean22306]

bump for any suggestions? I'm gonna tear into this tomorrow to try and get it running good.

 

[sean22306]

replaced the rings, made a better ground, checked the injectors with an ohm meter.

still has the hesitating/bucking. Seems to happen more consistently above 4000 rpms. Could this be caused by the o2? It is the one the ssafc connects to.

picture of the ring kit

 

[slo03.5msp]

it's most likely a rich spot. If you check your output setting i bet it's set up so that the ssafc kicks in at 4psi. Which doesnt work so well. If you could let me know which map your using and your mods in a pm and i'll see what I can work out. I understand your vehicle is different than mine but I can work in a little added safety room. Just please get a wb as soon as possible.

 

[Metallic36]

I'll bump this up since I'm getting the same codes.. P0134 and P0132. I have replaced/cleaned the O2 sensor, no idea what it could be.