JohnC

So I bought this: https://thetuningschool.com/collections/gm-tuning/products/gm-big-3 I don't have much time to tune it and all I can do is log my drive to work and then adjust and readjust until its perfect. Wish me luck.

I get they move, but it did not read like that before I f'd up the exhaust. It read exactly the same as the other wideband you see in the video that isn't swinging. Look at the difference in htat video. The car is still trying to throw the same CEL as well. I think I got the lambda reading wrong; I believe it is swinging 1.500-ish now, but I'll double check and make a new video.

The bank 2 wideband isn't reading as lean as it was before I took it to him. It was swinging as high as 1.200 Lambda at idle. Now it'll only go up to 1.050 ish. I guess he re-positioned and tightened that pipe better than I had it. I'll post new video of it later...

Car is back. Michael's exhaust guy bailed on him this weekend and with LS Fest coming up, he didn't have time to weld in the VBands anyway. He swore it doesn't have an exhaust leak, but my wideband on the Bank 2 side is still erratic. Something is up there, but I don't recall having this issue until I tried to swap cats on for emiss. I had to wallow the pipe on / in a little with the cat pipe to get it to slide in. I'm thinking that, maybe even though the clamp should tighten the outer pipe back down, the inner slip in section might have got shrunk inward a little too. So every time I drive it a while, I get the CEL with OBD2 code pending. Until I can get the VBands welded in to eliminate that as a possible issue, I can't really justify the time and money trying to tune it with issues like that. The trans isn't shifting bad. I think if I didn't have to keep clearing the CEL / OBD2 codes, I'd assume it would learn its way to smoother shifts. Only issue I see now trans wise is ever so often when I let off the gas to cost / stop, it'll feels like the converter or something snatches / grabs. So I won't be driving it until I get the exhaust done and a re-tune. If there is no exhaust leak causing the fuel issue, I'm wondering if one of my ID1300x injectors is screwed up because I recall OBD2 codes lean bank 2 and cylinder imbalance in the codes I got before I took it to the shop. Ehh... Hotrodding. A lot of time work and money for so little gain.

I know, right.... Not got to enjoy this car much this year.

Ehh, turns out the exhaust wasn't done yet, but everything else is. He FB messaged me last night and told me he is waiting on a friend to help because it takes 2 to weld in the vbands. He says Sunday it'll be done. I have my fingers crossed!

That's interesting! I wonder why after-market doesn't fit to factory specs? There can't be that much variation on the OEM side, so it doesn't make sense to me that it would be difficult to make those converters fit perfect to be honest. Does Circle D or anyone else ever explain why they're not to factory specs?

Michael says it done! Just waiting for the DSX Aux fuel pump harness to come back and that's all she wrote!

A 5.3 is an excellent choice! Sent from my iPhone using Tapatalk

Until my junk broke, I didn't know these converters had to be measured for clearance. I thought they were machined perfect to factory clearances since they're made to bolt to a stock trans and flywheel. I don't get why they're not machined perfect. My first Circle D that Diz installed went right in that I know of with no clearance issues.

ProCharger... ante up! Sent from my iPhone using Tapatalk

Thanks, guys!

It's looking like August some time...