Hey all, I'm an old member here (new name since I lost my email and password) and am just now getting back into this car of mine. I've had it a long time and it's been sitting for a lot of years now. the last time I remember it running correctly was in 2004. It has 73k but was rebuilt due to a spun rod 20kmiles ago. It is stock with a few bolt-on's:
Adj fuel reg.
cold air kit
adj wastegate
new MAF
The shop where it was painted ran diagnostics on it and tracked the prb down to the calpack (sound right?), the smaller chip on the ECM. They checked the plugs, wires, vacuum lines, etc in which I trust what they say since the owner also has a GN and helped me pick mine out back in 98. The only reason he didn't swap out the chip is that it's not made by GM any more. He did put his aftermarket performance chip in mine and said it ran much better, but it still ran rough.
I got an ECM off ebay and have been running it with my chips, my ECM with the chips off the one I bought, and basically trying every combination I can think of with these two. One combination idles better but they all do the same thing when driving. I do believe that the smaller chip in mine isn't working right though.
I just need to know what else I can look for and try. I'll be uploading a video of it going down the street so all can hear just how much it cuts out and pops. It's like I can't give it any throttle to pick up speed. I can only just ease into it and maybe get up to 40mph or so.
I'll be finishing this car within in a month and need to get it running right before September. Aside from paying someone to make it right, I'd like to figure try myself first.
Youtube link
Adj fuel reg.
cold air kit
adj wastegate
new MAF
The shop where it was painted ran diagnostics on it and tracked the prb down to the calpack (sound right?), the smaller chip on the ECM. They checked the plugs, wires, vacuum lines, etc in which I trust what they say since the owner also has a GN and helped me pick mine out back in 98. The only reason he didn't swap out the chip is that it's not made by GM any more. He did put his aftermarket performance chip in mine and said it ran much better, but it still ran rough.
I got an ECM off ebay and have been running it with my chips, my ECM with the chips off the one I bought, and basically trying every combination I can think of with these two. One combination idles better but they all do the same thing when driving. I do believe that the smaller chip in mine isn't working right though.
I just need to know what else I can look for and try. I'll be uploading a video of it going down the street so all can hear just how much it cuts out and pops. It's like I can't give it any throttle to pick up speed. I can only just ease into it and maybe get up to 40mph or so.
I'll be finishing this car within in a month and need to get it running right before September. Aside from paying someone to make it right, I'd like to figure try myself first.
Youtube link
