I know why my times sucked!

[sweetbmxrider]

those exhaust temps are worthless. how many miles on the car?

[MattysTA]

Originally Posted by ins0mnia24

Yeh you would be able to see just by how fast the mV readings take place to judge if you are getting lazy readings from the O2's..
And then even if no dash light you would still have a Dtc until it got bad enough to set the dash light off..

You probably have some tuning issue's
Other than that since you have Efi live I would ditch the sim's and cats then..

actually ive had no dtc's without the dashlight off, plenty of them with it on though.

i have the factory tune in it. i only use it for scanning,logging and misc. things like the tm etc. im not going to change a/f around till i get a wideband for both banks.

also i just got done"fixing" the cats and tomorrow after work ill be putting in two new front 02's and all new plugs(took out two for bolt access and found two diff ones lol) then after i drill out the three manifold studs that snapped and put it back together hopefully ill make it to the track if not then fri night......

[ins0mnia24]

wow you didnt even touch the torque management programing?

[MattysTA]

Originally Posted by ins0mnia24

wow you didnt even touch the torque management programing?

yeah its disabled, i said it above letters tm lol

[MattysTA]

Originally Posted by sweetbmxrider

those exhaust temps are worthless. how many miles on the car?

what makes you say that? and it is just under 80k

[ins0mnia24]

yeh I didnt recognize the abbreviation with out the .
Keep at with the EFI live you can definitely pull a few more degree's of timing out of your automatic..
Gm gave them 5-7 less than the 6-speed cars

[MattysTA]

Originally Posted by ins0mnia24

yeh I didnt recognize the abbreviation with out the .
Keep at with the EFI live you can definitely pull a few more degree's of timing out of your automatic..
Gm gave them 5-7 less than the 6-speed cars

really more timing? ive seen 40 on the scanner, so your teling me the 6 spds are seeing 47? wow

[sweetbmxrider]

Originally Posted by MattysTA

what makes you say that? and it is just under 80k

80k i would deff go over the tune up stuff but like you said you are replacing the plugs. and like it was already said, the cat conv. is supposed to heat up to burn off as much of the emissions as possible. naturally the rest of the exhaust will be cooler. a muffler, by principle, is restrictive so it will be hotter than the tail pipes.

[JL8Jeff]

I've seen 42-44 degrees of timing on my stock automatic and I always thought it was a bit much. I always had some pinging and I think it was because of some carbon buildup because of the oil being pulled through the pcv. Even after tuning and headers I still get some ping so I think something else isn't quite right. But the car runs great with 45K miles so I'm leaving it as is for now. I think you're on track running some new 02's for baseline but give it a good Seafoam cleaning as well before the new O2's since it may damage them anyway.

[ins0mnia24]

40 is around what these cars would see at part throttle or just cruising around on the street because there is less air going into the engine so it is ignited earlier..
W.o.t. or during your peak hp and tq rpms it will be alot lower like 19-24 depending on the year of the car

[MattysTA]

well the cats are back on but i have yet to do seafoam,plugs(also have msd wires on the way),and 02's but aside from that i took her for a ride and allready feel a difference im also going to pick up a fuel filter after work and then if its done early then off to etown i go....

[SuperSweet]

ill be there. hope to see you run a better time

[JL8Jeff]

I wouldn't put the new O2's in until after you run Seafoam through it. It could ruin the new O2s. If you haven't checked all the plugs, I wouldn't be surprised to see a couple of them missing the platinum pucks and having a huge gap, that happens with the lousy Delco plugs. Switch to NGK for sure.

[MattysTA]

Originally Posted by JL8Jeff

I wouldn't put the new O2's in until after you run Seafoam through it. It could ruin the new O2s. If you haven't checked all the plugs, I wouldn't be surprised to see a couple of them missing the platinum pucks and having a huge gap, that happens with the lousy Delco plugs. Switch to NGK for sure.

yeah thats what i did, it was weird i did seafoam twice and barley any smoke came out ive done it before on my 97) so afterwards i did the 02's( bought ac delcos off ebay) and then the plugs. put everything in and man what a difference, now my 02's were reading more properly, well atleast till i got to the track....

my bank one s1 went back to readings of .0xx under wot while the bank2 s1 was reading .820


ill post of one of my logs. i think its because ithe 02's the guy sent me are both for the one side as both the new ones had the same length wire with ac98 on them and the ones i took out of the car one had ac98 and the other ac97 on it. the right side one has a shorter wire but right now it has one with the longer wire. the one i took out that i replaced with a long wire like the one that was in there is the side that is not reading right. also im getting some exhaust smoke now(even before the seafoam) probably my pvc sucking oil. im going to switch the 02s from one side to the other and see if it follows...

oh and i also didnt get lower than a 13.9 at the track while the best being a 13.7@101 with a 2.1 60ft(turns out my 17's also spun on the rim a bit after i felt something strange and marked them sure enough one spun on the rim a bit lol)

[ins0mnia24]

The 97's are right side for the front and rear.
And the 98's are Left side front and rear, Not that it really matters because the actual sensors are all the same the only difference is the length of the wires..

[MattysTA]

Originally Posted by ins0mnia24

The 97's are right side for the front and rear.
And the 98's are Left side front and rear, Not that it really matters because the actual sensors are all the same the only difference is the length of the wires..

true the only diff is the length of wire but because of that it also changes how fast the sensor heats and responds so right now my b1 is off by3-5% compared to b2

[ins0mnia24]

The legnth of the wire has no affect on how they read they are there just for proper fitment if you prob them with DVM you will see that.
Both banks arent going to read exactly the same either..

While there is different paremeters that can you do tuning wise to make them switch a little bit faster you arent going to see them as perfectly as you want them to be or think they should be..
As long as you arent getting any codes you are fine..

You could always try the rear Vette sensors like some people do but alot of times it is still going to be the same thing..

[MattysTA]

yeah they arent too bad, ill be borrowing my buddys wideband next weekend to see where im really at so i can do some tuning