06 Gt auto with JLTcai, Brenspeed sct 93 Oct tune. SLP's sportlines, steeda LCA relocation brackets, spohn panhard bar and lca's.I noticed that when i go WOT on the car i am getting a POP! when it shifts from first to second to 3rd and then i just let go. what could be the cause of this ? i have 15000miles on the car. i own it for 1 year, Full synthetic oil on it since the first day.

 

I had that problem a couple of times after highway driving. Getting back on the hwy WOT and kaboom. I reloaded the tune and it quit.

 

Have you ever had it dynoed? Sounds like your AFR may be off.

 

I have never dynoed it. its crappy it never did it before. why would it be off? do you think having no
mufflers at all would change it ? im using the same tune brent sent me last year. I had reloaded it a couple
times, i'll try doing it again, and see what happens. Someone told me that maybe one of my valves was gone. [&o]