well got my car back (wires , plugs ,belt , 2 header bolts drilled out was dumping exhaust before out the passenger side, and had an exhaust leak at the collector) , sounds alot better and runs a lil better .It seems like it got a lil more power now , mainly in the bottom end. Ill find out friday at the track . Damn thing is still throwing a 430 code tho (#2 cat system ineffeciency).I was hoping the exhaust leak was to blame. So my friend autotaped the thing and according to him the car is leaning out the #2 injector bank , to the effect of up to like -9% or -10%. Any Ideas ??? Im stuck on what it could be. Also after autotapping it It seems like its picking up a faint knocking . I suspect maybe its the headers and roller rockers , maybe the lt4 knock module is in order as I have the swap w/ hotcam.

p.s. I ran a best of 8.917 in the 8th and 80.5mph which most people say is pretty weak for my car . This was before I got any of the repairs done.

 

ttt , someone has to know

 

The P0430 code means one of two things... the passenger side cat is dead, or the O2 sensor after the cat is defective. Neither of these problems will make the car run poorly. Swap the after cat O2 sensors from left to right, and see if the problem follows the sensor (sensor problem) or if the problem stays on the passenger side (cat or wire problem).

You show the LT4 HOT cam. Who did your programming? Did you have it reprogrammed? If you didn't have it reqprogrammed, its not unusual for the slightly higher MAP values to affect the A/F mix and require the PCM to pull a little fuel. However, if its only happening on the pssenger side (what are the long term fuel corrections on the drivers side for the Cell correcponding to the -10%?), you have to look for things that would cause only the passenger side to have a problem.

Could be a leaky injector on the passenger side. Some aftermarket TB's have been know to produce "split" long term corrections at low loads due to IAC flow issues.

Do you have the entire AutoTap log? If so, post a link to it, in ".csv" or ".xls" format, and we can take a look at it. The limited data you posted is not really enough to do a thorough analysis.

 

yeah i say either a clogged cat or a bad o2 sensor...

but i have to agree with that 8.91 is very weak! my car with the 2.73 gears and just the few mods i have in the sig ran a 8.83 in the 1/8th.

so invest in an o2 sensor...thats most likely your problem

steve

 

yeah he put the logs on a floppy but the damn things came out corrupted I cant even get them to copy over to the comp , im gonna try and get another copy tonight. I dont remember what all the numbers were off-hand. Ill let you guys know when I have them , I recorded them for that sole purpose , i figured one of you guys could look at the log and figure out what was going on. Yall have already been very helpful with my attempt to get all the bugs out.

update : darn It I do have them , there were 2 logs , I thought the first one was the fuel trim, its the second one. How do I post it ??? Ill go ahead and email it to you tho Injuneer.

 

tried to email it to ya injuneer but the one one cz28.com gave me didnt work , anyway I can mail it ???

 

I have "hotmail" blocked because there is too much SPAM sent from there.

I will send you a PM with another e-mail address you can use.

 

I understand that , I get a ton of junkmail although not much comes from hotmail , I dunno if thats because I have hotmail or not. Thanks again , the email is off to you .