Basically I'm sick of the rough idle, bucking, missing, and generally running rough. I'm at the point where I'm thinking of selling my engine and going to to a mild 302 combo. I love racing and having fun with 450rwhp, but that's only about 15% of my driving time in the car...The rest of the time it just pisses me off and I can't wait to get out of it.
First of all, I need a new battery and I'm going to swap the u/d alternator pulley for stock. I don't think the alt. is putting out enough voltage at idle to charge the battery.
Next, I need to figure out what to do with my exhaust and O2 sensors. My plan was to get the computer retuned to run without O2's, but then I was thinking will the weather affect the tune? A friend of mine did this and he said the car behaved way different in the evenings when it was cool so he needs multiple tunes.
My reason for removing the O2's is we pretty much determined they're mounted too far back to stay heated up. So my question now is, if I get the headers Jett-Hot coated, will that keep enough heat inside the header so the O2's will work properly? My other option would be to go with a shorty or mid length header, which would also solve my ground clearance issue (mostly) and quiet the car down a bit, which I also need to do. Or I could continue with my plan to delete the O2's entirely...
Once I get these two problems taken care of, I can post up my results and go from there.
Basically what happened is I tuned the car up with new sensors and stuff then had it dyno tuned. It ran great for a couple weeks then it just went downhill. It developed a surging idle, so I checked the tb stop screw(fox tb) and was all the way out. I adjusted it to where it should be and it idled at about 1400 and would hang at 2k+ when coasting. I got that mostly fixed with an IAC restrictor plate. Then it started missing and bucking, which comes and goes at random.
I think it really just needs a GOOD tune, but I want to make sure I don't have any other problems before I spend a couple hundred $$ on another tune.
First of all, I need a new battery and I'm going to swap the u/d alternator pulley for stock. I don't think the alt. is putting out enough voltage at idle to charge the battery.
Next, I need to figure out what to do with my exhaust and O2 sensors. My plan was to get the computer retuned to run without O2's, but then I was thinking will the weather affect the tune? A friend of mine did this and he said the car behaved way different in the evenings when it was cool so he needs multiple tunes.
My reason for removing the O2's is we pretty much determined they're mounted too far back to stay heated up. So my question now is, if I get the headers Jett-Hot coated, will that keep enough heat inside the header so the O2's will work properly? My other option would be to go with a shorty or mid length header, which would also solve my ground clearance issue (mostly) and quiet the car down a bit, which I also need to do. Or I could continue with my plan to delete the O2's entirely...
Once I get these two problems taken care of, I can post up my results and go from there.
Basically what happened is I tuned the car up with new sensors and stuff then had it dyno tuned. It ran great for a couple weeks then it just went downhill. It developed a surging idle, so I checked the tb stop screw(fox tb) and was all the way out. I adjusted it to where it should be and it idled at about 1400 and would hang at 2k+ when coasting. I got that mostly fixed with an IAC restrictor plate. Then it started missing and bucking, which comes and goes at random.
I think it really just needs a GOOD tune, but I want to make sure I don't have any other problems before I spend a couple hundred $$ on another tune.