What is the ngk upgrade for the 9s for sparkplugs?

 

If you need plugs call buschur and see if he can get you some and pick them up from him this weekend

 

Yea, I might do that. There are countless guys running higher hp than me on stock 9 plugs though.

 

UPDATE:

Im gonna update thi thread, casue I hate looking through threads in hopes of a solution and it just goes dead lol.

So I fixed this issue finally. It turned out to be valve springs. I was running the GSC std beehive springs. Well, those were too weak for my boost levels and rev limit. Devin recommended me to try some new valve springs, so I got the GSC high rev springs, installed them friday night and I can finally shift the car without that stupid bogging between shifts!

 

I am getting a similar issue. Car bogs around 5000 rpm for a second after a shift at redline, then builds boost again. Doing a pull in third hear is no problem. I am at 1.8 bar and redline is 7600. Running GSC S2 cams with MAP Ultimate Duty Beehive springs with stock retainers. Is it likely to be the same issue at this boost level and rev limit? Or were you running much higher boost and rev limit?

 

try different spark coils?