After the WB02 died at 22K and now the 2nd change of plugs as well....

Looking like running a strong tune will require you to change WB02's at 20K and plugs at 10K intervals. Ive found the O2 sensor on GM Parts Direct for $60 (PN: 12589380 for 09's, prolly the same for 08) And the Plugs are about $5/each on GM Parts. I don't have that PN tho, sorry.

When the WB02 went out, the car had a rough idle with a FAINT sound of a boxer rumble to it. Replacing it made that go away but it still stumbled a tiny bit at idle. I replaced the plugs again (had been ~10K) and gapped them to .030. The car idles perfect now, incredibly smooth and very quiet as well!!! Try a tighter gap tuned guys


I drive about 100 miles a day a minimum, in 6 months Ive put 22K on the car. 20K of it was tuned lol! Anyone else putting this many miles on their tuned car? And finally, is anyone else finding anything similar to what I am???

 

Been running NGK 6510's gapped at .032 for around 8k miles now, no issues. (~2 ranges colder) 6509's may be a better choice (~1 range colder) but for my highway commute & some stop & go, these are good. Color is good & no fouling or misfires.

Steddy2112 will post that I never go over 4k rpm, he makes a comment every time I post about different plugs.

BYT knows better, he's seen some of my logs.

I've been tuned since about 8k I think and pulled the stock plugs at 21k trying to address a KR issue that is ongoing. Stock plugs looked fine also.

90 MPD DD, purchased in 8/08 and I have ~29k on it now. It sits at home during extreme snow days.

 

I thought about trying 1 range colder, but Im getting good results with the stock plugs gapped tighter now. Maybe next plug change Ill try those out

Yea, he goes over 4K too LOL! There's a screenshot posted elsewhere now going well past that LOL!

 

me likey! Sub'd! Sticky worthy?

 

Yes, you do go over 4K all the time and I see no evidence of any major misfires at all your logs. Just a lot of LTFT drift from that intake of yours LOL.

 

Last commute I got to log Tues on a 70 minute mixed driving round trip only went from 0 to -0.8 to + 1.6

These intakes are a b!tch alright.

 

Honestly... scan pretty much any car if you have the tools. My '97 Nissan truck, my wifes '09 Yaris... and I see the LTFT drift a lot more than +/- 2%. That amount of drift doesnt concern me at all... and I'm pretty OCD.

When I first got HPT and scanned my bone stock car w/3k miles on it (at that time) it was sitting at -10%.

Having no misfire, knock or blowout issues on the stock plugs here (yet), so staying that route for now. Especially since I have a box of 8 left hehe.

 

If we had some control over IAT or ECT MAF compensation we could prolly keep it within +/- 1% easy.

 

Mine stay 0.0 to -0.8 right now. That seems to be as good as it gets. I am way OCD when it comes to fueling LOL.

 

You also have more consistent weather then up north tho too! lol

I leave my house, its 12* LOL. On my ride home it's in the 40's. Def has an effect on the MAF tuning!! I try to tune MAF at lunch time and do Mult by half most of the time. Its pretty stable now!

 

Yeah i need to take care of this maintance i have 15k miles 12k tuned and im pretty sure my WBO2 is shot, and i want to change my plugs too...

 

Speaking of maintenance does anybody recommend any sort of a Fuel System cleaner, is there even a good one for Direct Injected Cars?

 

I've been tempted to do the Seafoam routine since our valves see no fuel. I'll do it before/if I replace the wideband sensor though.

 

I've been tuned for almost 20k miles and I haven't changed my plugs yet lol. Looked at them in July and they looked fine, but I'm easy on the car and it doesn't get driven as much as it used to.

 

I am going to seafoam mine soon. 1 Can in the gas to clean the injectors, combustion chambers, exhaust valves, and hopefully the wideband O2. Suck at little at a time into the vac line on the intake mani to clean the intake valves.

 

my stock plugs looked pretty good after 11000 miles when I changed them out

I have used seafoam in the past, I think its a very good product.

 

I'd be afraid to use that on my car.

 

Use what, seafoam? It is safe just dont pour the whole bottle into the intake all at once while the car is running LOL.

 

i used it on all kinds of cars, and works great, really breaks up all the **** inside the motor. I used it on my old 00 corolla and got like 4 mpg better!

 

Plus the smoke show 0o0o0oo0o, ahhhh. lol

 

Cool!

 

I will be using seafoam at 10k miles .....I had to use a fuel system cleaner on the valves when my car had 1500 miles on it . When I would get on it from 2500-5000 rpm the exhaust note would change and the car would fall on it's face ..... after running the cleaner threw I never had that issue again . I think mine were hanging just because they were tight from being new .....need lubrication more than cleaning . I can see this being a issue in the future with carbon build up thou ....

 

This may be a loaded question, but what is GM's service interval for spark plugs and the WBO2 sensor? I'm guessing this isn't a 100k mile tune up car lol.

 

When stock, 100,000 the plugs are good for. I would guess you shouldnt have to really change the wb02, but if your like me and do a little race gas at the track every week, prolly going to go through some 02 sensors.

 

Changing the O2 sensor is a BITCH too.