When my motor had stock cams on my 6262 turbo setup with 93 oct and m10 nozzle meth. I had no problem running 14*up top with the stock cams with stock maf, now with the gsc cams and s.d for some reason I can't run anymore then 8* to 9* up top at 7,700 rpms at 300 load..wtf..is this normal my tuner says t i'm maxed out on my fuel of 93 oct and 100% meth ...What do you guys think the issue might be???

 

Full mods list?

Did you put in the new cams and go SD at the same time?

 

6262 turbo kit
880cc injectors
100%meth vp m1
tbe 3 inch
tial bov vta
gsc 2 cams stock springs
drop in fuel pump 255
s.d tune v7 tephra map

It never did this till after installed the cams actually the s.d made it run better but still have the same issues..The stock maf with upgraded cams was a different tuner then the s.d but the new tuner has tuned my car with the stock cams and maf and said I could run *14 peak before and we can't anymore he still thinking about it..lol..I only use 93 oct either sunnoco or shell.

 

Also car feels lazy and a bit laggier from the stock cams..My new tuner that had tuned my car before checked the older dyno sheet and it had more lag to it then before..I did a boost leak test and found One small one at the upper intercooler pipe coupler and fixed it and still have this issue im so pissed haven;t had my car run right in the last 5 months..

 

The S2 is a much larger cam than the OEM so it will have more lag, i'm just curious of how much you are seeing? There is one other thing we suggest to run with the S2 cams like an upgraded Beehive valve spring. its actually writen on the box that for full performance please use our beehive valve spring kit. i'm pretty sure what you are experancing is what i call valve flutter or the valve bouncing on the seat do to a light spring rate. I would suggest adding the springs and heading back to the dyno.