was at the dyno and had some trouble making power past 48-4900.
I now have a rear mount tc-78 @ 7lbs.
Heres a dyno sheet, let me know what you guys think is going on.

 

hows ur valve lash look? Seems like floating valve springs perhaps.

 

Valve lash is 1/2 turn past zero lash. that's what i am thinking also, i had the springs checked and they are still good (specs close to when they were new) but possibly need shimmed for more seat pressure.

 

Whats your plugs gapped to?

 

they were .032 but i put in new ones gaped at .028

 

are you running an MSD box or anything?

 

When you have trouble like this on the dyno, ask them for a graph with no smoothing. It is helpful to see what it is doing, but sae 5 will even out some of it.

Pretty much already been said but, either valve float, or ignition. When I had plug gaps too bit or not enough spark it would flat out misfire and buck/spit. You could see spikes up and down in the graph. Yours looks like it just hits a wall. What springs are on there? Remember you need more spring than normal because of boost.

 

No i am not, i had one but sold it with my supercharger setup because it had the btm built in and didn't need it after i got tuned. but i am getting another one in the next couple of weeks hopefully.

 

Yeah the un-smoothed one looks like hell, i can get one from them if need be but its just like this one, just more jagged. i have the Patriot Golds (135 closed/375 open) and on advice form bret i am shimming them to 1.7 and seeing what happens