I’m looking for some advice on where to go from here. So back story is car is an 01 gtp with 126k mikes. I bought it completely stock 6 months ago. I’ve replaced all fluids except transmission but I’ve drained and added some back tho. I put on SD long tube headers, zzp fenderwell intake, new oem wires and Autolite 605’s. New belts, couple pulleys, power steering pump and rack and pinion. I’m on stock SC pulley still. I don’t have it tuned so I have cel for the headers.
Anyways i don’t have a way to monitor KR. But I have a little gauge I used to use when I had my ‘11 Camaro 3.6 v6. It shows fuel trims, boost, timing advance and eng. temp. I’ve been using it to monitor fuel trims and timing advance. I’m new to 3800 but I’ve done some wot pulls in 3rd and 4th gear and my timing advance doesn’t go past 9 when Wot. Isn’t it supposed to be 15-16? I don’t drive the car much so after seeing that after a couple pulls I don’t go wot anymore. I did on Friday add some e85 to my 91 to get an e30/ 94 octane blend to see if that would help my timing advance. I took it easy first 35 miles and my trims settled down and were little high but nothing crazy. I just tried another wot pull in 3rd gear and my timing did go up to 10.5 but then dropped to 8.5 and 7.5 so I let off. I know in the Camaro 3.6 we had over sensitive knock sensors and timing advance would be pulled if it sensed kr. Is the l67 the same way? I was deciding between getting a tune next or maybe an Aeroforce gauge to monitor kr. What do you guys think? What can cause so low of wot timing? Btw car feels fast/good when doing pulls. Boost last i looked since headers and intake peaks around high 4- low 5 psi.
